---
title: "User Manual – ASTER SX for V2 GB, ASTER SE for V2 GB, ASTER for V2 GB"
canonical: "https://help.gatee.eu/space/GHC/2361262128/User%20Manual%20%E2%80%93%20ASTER%20SX%20for%20V2%20GB%2C%20ASTER%20SE%20for%20V2%20GB%2C%20ASTER%20for%20V2%20GB"
format: markdown
---
> Macro (toc)
# General Information
**ASTER V2 **set raises the price-performance ratio by including in the set a **Quantum** **Trigger** and new functions programmable via trigger. Now, out-of-the-box, you can set sensitivity from ludicrous **touch** through **hair** to full movement. **Improved programming via trigger** gives you** new settings **like automatic **pre-cocking**, trigger sensitivity adjustment, **active brake** settings with top-class adaptive mode and new **SAFE-SEMI-BINARY** selector mode. Calibration, DTC codes – all available just via trigger and selector movement. Additionally, you get **brushless motor support** and new **noise-resistant trigger detection** algorithm. ASTER's smart fuse protects your AEG’s battery, motor and the controller, even in case of reverse battery connection. This feature, along with the optical sensors, makes ASTER one of the most durable ETU on the market.
# Improvements
| **Available out-of-the-box without connecting to GCS** | **ASTER V2** | **ASTER V2 SE** | **ASTER V2 SX** |
| --- | --- | --- | --- |
| Essential Programming via Trigger | :check_mark: | :check_mark: expanded | :check_mark: expanded |
| Pre-cocking (when Programming via Trigger) | ❌ | :check_mark: LOW / MID / HIGH | :check_mark: LOW / MID / HIGH |
| De-cocking | ❌ | ❌ | :check_mark: |
| Hair Trigger | ❌ | :check_mark: | :check_mark: |
| Strong spring compatibility | ❌ | ❌ | :check_mark: |
| Profiles | :check_mark: | :check_mark: | :check_mark: |
| Trigger Sensitivity Adjustment (when Programming via Trigger) | ❌ | :check_mark: | :check_mark: |
| Brushless Motor Compatibility | ❌ | :check_mark: | :check_mark: extended up to 11.1 V batteries |
| Active Brake adjustment (when Programming via Trigger) | :check_mark: Adaptive / OFF | :check_mark: Adaptive / 100% / 60% / OFF | :check_mark: Adaptive / 100% / 60% / OFF |
| Thicker and sturdier PCB | ❌ | ❌ | :check_mark: |
| Safety Lever Compatibility | :check_mark: | :check_mark: | :check_mark: |
| Protection against Battery Reverse Polarity | :check_mark: | :check_mark: | ❌ |
| USB-Link & Blu-Link Ready | :check_mark: | :check_mark: | :check_mark: |
| Ultra Low-Voltage Ready (3.75 V) | :check_mark: | :check_mark: | :check_mark: |
| Sensor Diagnostic Mode | ❌ | :check_mark: | :check_mark: enhanced |
| LED & Vibration Signals | :check_mark: | :check_mark: | :check_mark: |
| Quantum Trigger included | ❌ | :check_mark: | :check_mark: |
> ✅ **Note**
> ✅ Any ASTER V2 or ASTER SE V2 updated to the latest firmware has the same functionalities as ASTER SX V2.
## ASTER SX V2
ASTER SX V2 is the proud successor of ASTER SE V2 boasting these improvements:
- full compatibility with brushless motors – even with batteries up to 11.1 V
- reduced unit heating while accommodating higher loads
- operation with stronger springs and demanding configurations
- thicker and sturdier PCB
- refreshed layout
- improved hardware
- de-cocking
## ASTER SE V2
ASTER SE V2 succeeds ASTER V2 bringing in these improvements:
- dedicated Quantum Trigger included in the kit for the first time
- new, expanded options available to configure via trigger
- out-of-the-box LOW/MID/HIGH levels of pre-cocking configurable via trigger
- built-in Active Brake adjustment via trigger out of the box
- trigger sensitivity adjustment via trigger
- revised sensor diagnostics mode
- brushless motor support
- improved cycle detection
- retained advantages of ASTER V2, such as protection against reverse polarity
> ℹ️ Read the whole manual carefully before use. Keep for future reference.
> ℹ️ The information contained in this document is subject to change without notice.
> ℹ️ Failing to read this information may void the guarantee!
> ℹ️ When using the product, always follow basic safety rules to reduce the risk of injury from fire or electrical shock.
# Device Structure
1. Printed Circuit Board (PCB)
2. Circuit power wires with DEANS-T connector
3. Motor power wire minus "-"
4. Motor power wire plus "+"
5. Sector gear position sensors
6. Trigger sensor
7. Fire selector sensor
8. Programming via Trigger LED
## Kit Contents
- ASTER SX V2 / ASTER SE V2 / ASTER V2
- Gearbox stickers
- Selector plate stickers
- Installation Kit
- QuickStart Guide
- Programming via Trigger Guide
- Quantum Trigger with ASTER SX V2 & ASTER SE V2
# Safety Summary
Please read this to ensure safe and correct use. Retain this information for future reference. The information contained in this document is subject to update without notice.
For your safety, this product should be installed by a skilled person.
> ❌ **Warning **
> ❌ Situations that may cause injury to yourself or others.
> ⚠️ **Caution **
> ⚠️ Situations that may cause damage to your device or other equipment.
> ✅ **Note**
> ✅ Notes, usage tips or additional information.
> ❌ **Warning**
> ❌ This device is not a toy and may not be operated by people (including children) with limited physical or mental abilities, as well as by people with no earlier experience in operation of electronic equipment. They may use the device only under the supervision of people responsible for their safety.
> ❌ **Warning **
> ❌ Before starting the installation process, make sure that your AEG magazine is empty and there are no BBs inside.
> ❌ **Warning**
> ❌ This equipment is not suitable for use in locations where children are likely to be present.
> ❌ **Warning**
> ❌ Persons under 18 years of age ought not stay unattended near the device during the installation or servicing of a device installed in an ASG replica.
> ❌ **Warning**
> ❌ Persons under 18 years of age ought not stay unattended near the device installed in an ASG replica ready for use.
> ❌ **Warning**
> ❌ Persons under 18 years of age are not allowed to install or commission the device in an ASG replica.
> ❌ **Warning**
> ❌ Persons under 18 years of age are not allowed to service this device.
> ❌ **Warning**
> ❌ Do not store or carry flammable liquids, gases or explosive materials in the same compartment as the device, its parts or accessories.
> ❌ **Warning **
> ❌ Take caution to prevent short-circuiting the battery as the consequences may be very dangerous to the health of the user.
> ❌ **Warning **
> ❌ Excessive trigger sensitivity may cause unintentional discharge (firing).
> ❌ **Warning **
> ❌ When an airsoft replica is not in use, its battery must be disconnected and the hop-up chamber must be empty.
> ❌ **Warning **
> ❌ While handling an AEG replica with a connected battery, anyone within the range of the replica must wear personal protective equipment.
> ❌ **Warning**
> ❌ When not in SAFE mode, avoid using the device around strong electromagnetic fields, such as PMR transmitters exceeding European standards or when electrostatic discharges, e.g. lightning, occur in the atmosphere, which may cause malfunction of the device and unintentional discharge (firing).
> ❌ **Warning**
> ❌ When an airsoft gun is not in use, its magazine must be detached or kept empty with no BBs inside.
> ❌ **Warning **
> ❌ Incorrectly connecting positive and negative battery terminals will cause immediate damage to the device, which is not covered by warranty, and can lead to fire.
> ❌ **Warning**
> ❌ Pay attention to correctly connect positive and negative wires to the battery. Make sure you are connecting the positive terminal of the battery to the red wire of the device, and the negative terminal of the battery is connected to the black wire of the device. Incorrect power polarity may result in damage to the device and could even lead to fire or battery explosion.
> ⚠️ **Caution**
> ⚠️ Do not remove the device protective film or heat shrink tubes. Removing them will void the warranty.
> ⚠️ **Caution**
> ⚠️ For your own safety you ought to use an additional fuse between the battery and the device.
> ⚠️ **Caution**
> ⚠️ When operating under unusual conditions, perform maintenance outlined below for the climate similar to your area. Operating in extremely cold temperatures is not recommended. Do not expose ASTER II Bluetooth® to direct sunlight for long periods of time. Keep away from dust or sand, which can cause malfunctions and/or excessive wear. Keep ASTER II Bluetooth® out of snow, rain, and water. This will prevent electrical failure and fluid buildup inside the gearbox.
> ✅ **Note**
> ✅ The product Warranty Form is available here:[ http://www.gatee.eu/warranty](http://www.gatee.eu/warranty).
> ✅ **Note**
> ✅ Bluetooth 4.0 or higher is required to connect to ASTER II Bluetooth® with a smartphone or other device.
# Installation
## Introductory Information
> ⚠️ **Caution**
> ⚠️ Regardless of your previous experience, follow all safety precautions to prevent any damage to your ASTER.
> ⚠️ **Caution**
> ⚠️ ASTER installation requires deep technical knowledge of gearbox internals. To avoid damage, we recommend it to be installed by a skilled person. If, however, you wish to proceed with ASTER installation on your own, you must read this full-length document and watch the installation video beforehand. Incorrect installation may result in, among others, sensor damage, which is not covered by warranty.
> ✅ **Note**
> ✅ Excessive sector gear shimming may cause incorrect cycle detection. The gear cam must interrupt the sensor beam.
> ✅ **Note**
> ✅ In case you have any difficulties while installing or using this product:
> ✅
> ✅ - contact us via [https://help.gatee.eu](https://help.gatee.eu)
> ✅ - send us an email: [support@gatee.eu](mailto:support@gatee.eu)
> ✅ - join [GATE Airsoft Community Discord Server](http://discord.gatee.eu/)
> ⚠️ **Caution**
> ⚠️ The ASTER optoelectronic components marked in the photo below are very sensitive. Avoid their damage.
> ⚠️ **Caution**
> ⚠️ Do not remove the device protective film or heat shrink tubes. Removing them will void the warranty.
> ⚠️ **Caution**
> ⚠️ An insulation washer is required. Place the washers according to the graphic below. Placing washers in the wrong order will cause a short circuit and permanent damage to ASTER, which is not covered by warranty.
> ⚠️ **Caution**
> ⚠️ Incorrect placement of wiring under the motor gear may cause insulation damage and a short circuit, which is not covered by warranty.
> ⚠️ **Caution**
> ⚠️ Do not pull the trigger when the gearbox is open. This may result in trigger sensor damage.
> ⚠️ **Caution**
> ⚠️ If the PCB does not perfectly fit in your shell, make the necessary modifications to the gearbox shell, **not to the PCB**.
> ⚠️ It is forbidden to make any modifications to the PCB shell such as drilling the screw hole, grinding the edges of the PCB, etc. Doing so may result in immediate damage to the circuit, which is not covered by the warranty.
> ⚠️ **Caution**
> ⚠️ The wires should be placed as far as possible from the two photo components and as close to the PCB as possible to allow the trigger sensor to operate with the widest possible range. Then, near the trigger, the wires should be arranged so that the trigger does not contact them during movement.
> ✅ **Note**
> ✅ The selector sensor does not detect black surface. If the selector does not come with a metal connector or is not working correctly, you must use an appropriate sticker from the INSTALLATION KIT.
> ✅ **Note**
> ✅ Sticker position is crucial. Make sure to align it exactly **to the left edge and the top red line**. The set contains 3 different sticker types. First, use the one with the thinner black line. If you are not able to calibrate the selector, try the other ones.
> ✅ **Note**
> ✅ If using a standard trigger, place the gearbox sticker as in the photo below. This allows ASTER II Bluetooth® to detect trigger movement. If you want to use a Quantum Trigger, do not use a gearbox sticker.
> ⚠️ **Caution**
> ⚠️ ASTER V2 connectors must be bent according to the photo below. Bending connectors in the opposite direction may cause them to break. If this should happen, spare terminals are included in the INSTALLATION KIT.
# Quantum Trigger
> ✅ **Note**
> ✅ Quantum Trigger is compatible only with ASTER V2 & ASTER II Bluetooth®.
> ✅ **Note**
> ✅ While replacing your old trigger with a Quantum Trigger, use the same trigger spring.
> ⚠️ **Caution**
> ⚠️ Do not remove the white sticker from your Quantum Trigger.
> ⚠️ **Caution**
> ⚠️ Do not pull the trigger when the gearbox is open. This may result in trigger sensor damage.
> ⚠️ **Caution**
> ⚠️ While installing a Quantum Trigger, do not place the gearbox sticker inside. If an ASTER was installed previously, remove the gearbox sticker.
> ✅ **Note**
> ✅ Finish assembling your replica and calibrate your ASTER following the steps in the **Calibration** section of this guide.
# Calibration
> ✅ **Note**
> ✅ During calibration, remember to pull the trigger completely each time (until you feel resistance).
> ✅ **Note**
> ✅ AUG type AEGs can only be calibrated in the GCS app.
Once ASTER is installed in an AEG, the trigger and selector sensors must be calibrated according to the steps below:
1. If your ASTER is brand new, go to step 2. If not, restore factory settings as described in **Restoring Factory Settings **below and then go to step 2.
2. Connect the battery. You will hear 3 low frequency vibrations indicating lack of calibration error.
3. Switch the selector to AUTO.
4. Pull the trigger twice and wait for a confirmation vibration.
5. Then, switch the selector to SEMI.
6. Pull the trigger once and wait for a confirmation vibration.
7. Switch the selector to SAFE.
8. Wait for a confirmation vibration. Now ASTER is fully calibrated and ready to use.*
*If there is a problem during calibration, you will hear a short high and mid frequency vibration. Then, calibrate the selector again.
> ✅ **Note**
> ✅ You do not have to calibrate your unit each time, only restoring the factory settings will require recalibration.
# Quick Access Menu
You can access **Pre-Cocking **or **Profiles** using a shortcut. After firing a shot, burst or while in SAFE (only if the safety lever has been removed)*, hold the trigger and switch the selector within the specified time (see table). Switch the selector in any order to change between the options indicated by motor vibrations.
By releasing the trigger, you exit the function confirming it. Bear in mind that **Programming via Trigger** is a different process. To find out more check the PROGRAMMING VIA TRIGGER CARD included or continue reading below.
*You can enter **Programming via Trigger** only when the selector on the replica is in SEMI position **and **AUTO mode is not assigned to this position.
## Pre-Cocking
> ✅ **Note**
> ✅ In order for **Manual **mode to work correctly, it must first be adjusted with GCS.
### ASTER SX V2 & ASTER SE V2
There is no longer any need to turn on the **Switch Mode via Selector** parameter for pre-cocking in GCS to be able to use this function. To turn on Pre-Cocking Mode, you only need to:
1. Fire a shot, burst or pull the trigger while in SAFE mode (only if the safety lever has been removed) and do not release the trigger.
2. Switch fire selector within 2 s. You will hear 1 low vibration.
3. Now each fire selector switch means the next option:
- 1 low vibration – Pre-cocking **Off**
- 2 low vibrations – Pre-cocking **Auto**
- 3 low vibrations – Pre-cocking **Manual**
4. Release the trigger to save the selected mode.
### ASTER V2
In GCS go to **Trigger>Pre-Cocking>Switch Mode via Selector** and use the toggle button to activate this function.
1. Fire a shot, burst or pull the trigger while in SAFE mode (only if the safety lever has been removed) **and** **do not release the trigger**.
2. Switch the selector within 2 s. There is a single low frequency vibration.
3. Switch the selector in any order to change between the options indicated by vibrations:
- 1 low frequency vibration – pre-cocking **Off**
- 2 low frequency vibrations – pre-cocking **Manual**
4. Release the trigger to save the selected mode
## De-Cocking
### ASTER SX V2
Forcing the piston release after firing with Pre-Cocking enabled
1. Press the trigger in SEMI or BINARY mode and wait for the firing cycle to end – do not release the trigger.
2. After 1.5 s, a high, medium, high, medium, high, medium frequency audible message will be triggered.
3. Releasing the trigger after the sound message is equivalent to firing without Pre-Cocking. The piston remains in the rest position.
> ✅ **Note**
> ✅ Releasing the piston to the rest position does not mean that Pre-Cocking mode is deactivated. Each subsequent shot after pressing the trigger will be made with the piston cocked according to the selected Pre-Cocking mode.
## Profile Selection
Profiles are sets of particular settings of configurable ASTER functions. In EXPERT firmware, you can choose one of the three profiles at a time.. Go to **General>Profiles>Change Profile via Selector** in GCS to be able to use this function. If you want to change the active profile:
1. Fire a shot, burst or pull the trigger while in SAFE (only if the safety lever has been removed) **and** **do not release the trigger**.
2. Switch the selector within 2-7 s. There is a single high frequency vibration.
3. Switch the selector in any order to change between options, which are indicated by vibrations.
1. 1 high frequency vibration – Profile 1
2. 2 high frequency vibrations – Profile 2
3. 3 high frequency vibrations – Profile 3
4. Release the trigger to save the selected profile
# Programming via Trigger
This programming mode allows you to set the options of basic ASTER functions.
> ✅ **Note**
> ✅ To run **Programming via Trigger**, your AEG must have a physical 3-stage selector.
## Turning on Programming Mode
1. Switch the selector on your replica to SEMI or BURST.* If AUTO mode is selected in SEMI position, use the alternative method below.
2. Fire a shot or burst **and** **do not release the trigger**.
3. Hold the trigger for 7 seconds – until you hear a vibration and see dark blue light in the trigger hole
*Not possible if AUTO mode is selected in SEMI position
## Alternative Method
1. Disconnect the battery
2. Switch the selector position to SEMI
3. Pull the trigger **and** **do not release it**
4. Connect the battery (ignore the warning vibrations)
5. Hold the trigger for 3 s – until you hear a vibration and see dark blue light in the trigger hole
You can easily change the menu level by switching the selector. Pull the trigger to quickly navigate the menu. Each time you pull the trigger, the LED color changes as well as the number of accompanying vibrations. The table presents functions and their options programmable via trigger as well as how they are indicated by LED and vibrations.
> ✅ **Note**
> ✅ If you hold the trigger for 10 seconds, factory settings are restored, which is indicated by 2 vibrations.
> ✅ **Note**
> ✅ The number of vibrations and the LED color reflect the position of an option or function from the menu.
> ✅ **Note**
> ✅ ASTER remembers your settings, so programming always starts by informing you of the current settings.
*To select **Option **from **Advanced**, hold **trigger **down for **3 seconds or more**.
**Predefined in GCS app. Read more: [help.gatee.eu](http://help.gatee.eu).
Predefine the setting in GCS, so it's available at trigger level. Once you disconnect the battery, the setting cannot be changed and needs to be reintroduced in GCS.
## Selecting a Function
1. Switch the selector to SEMI.
2. To get to a function, pull the trigger the specified number of times (according to the table above).
## Selecting an Option of a Function
1. Switch the selector to AUTO.
2. To get to an option of a selected function, pull the trigger the specified number of times (according to the table above).
## Saving an Option
1. To save an option, switch the selector to SEMI.
2. The setting is saved and you are back to the functions menu.
3. You can set the options of the other basic functions the same way.
## Advanced Options
1. Select the **Advanced** option.
2. Pull and hold the trigger for more than 3 seconds.
# Trigger Sensitivity Adjustment
## ASTER SE V2 & ASTER V2 SX
The Trigger Sensitivity Adjustment option allows you not only to check the currently set sensitivity but also to adjust the sensitivity to any position of your choice.
1. Switching on the Trigger sensitivity mode works analogically as with other ADVANCED functions (check the previous section).
2. After pressing the trigger to the position of the currently set sensitivity, a single, short vibration will activate. The set sensitivity is also indicated by orange LED light, which goes out when the trigger is released. The LED light informs about the set sensitivity even if all vibrations are muted in GCS.
3. Setting the sensitivity is done by pressing and holding the trigger to the position in which you want to set the activation threshold, and switching the selector to SEMI to confirm the set position. After this operation, you remain in the ADVANCED function and you can go to the option selection or select another function at any time.
4. If you do not want to change the trigger sensitivity, it is enough to not move the trigger for 5 seconds - this will result in going back to the option selection.
## ASTER V2
> ✅ **Note**
> ✅ Update your ASTER's firmware with the GCS app and Blu-Link or USB-Link to use Trigger Sensitivity Adjustment.
## Exiting the Programming Mode
1. Switch the selector to SAFE.
2. Enjoy the ASTER functions you've just set.
## Activating SAFE Mode if Not Assigned
If SAFE mode is not assigned in GCS, it is possible to activate it via the selector*:
1. Switch the selector **rapidly **in this sequence: SAFE → SEMI → SAFE (SAFE → AUTO → SAFE for AK-47)
2. Now SAFE mode is activated – switch to SEMI or AUTO to deactivate it
3. Switching to SAFE again accesses the fire mode assigned to the SAFE position in the GCS
*SAFE mode also applies when the selector is in SAFE while connecting the battery – switching to SEMI or AUTO deactivates it.
# Programming via USB-Link
> ✅ **Note**
> ✅ You can use a USB-Link to connect your ASTER to GCS for Android and Windows/macOS. To connect to GCS for iOS, you must use a Blu-Link. To learn more, go to [QuickStart (QSG) [BLU-L]](https://help.gatee.eu/space/GHC/687243265/QuickStart+(QSG)+%5BBLU-L%5D).
> ⚠️ **Caution**
> ⚠️ Prevent the USB-Link and the ends of the USB cable from contact with conductive materials, such as dust, liquid or metal powder.
> ⚠️ **Caution**
> ⚠️ Do not remove the device heat shrink tube.
1. Connect the USB-Link via its Micro-USB plug to your PC, Mac or smartphone using one of the dedicated USB cables:
- USB-A cable for PC/Mac
- Micro-USB or USB-C cable for smartphones
> ✅ **Note**
> ✅ The micro-USB cable has the same connectors on both sides. However, it is very important to connect the USB-Link and smartphone to the appropriate ends of the cable as otherwise, it will not work.
> ✅ **Note**
> ✅ If your USB-Link cannot be detected, follow the instructions displayed in GCS.
2. Connect ASTER to the USB-Link
> ✅ **Note**
> ✅ In case you have any difficulties while installing or using this product:
> ✅
> ✅ - contact us via [https://help.gatee.eu](https://help.gatee.eu)
> ✅ - send us an e-mail: [support@gatee.eu](mailto:support@gatee.eu)
> ✅ - join [GATE Airsoft Community Discord Server](http://discord.gatee.eu/)
3. Now you can control ASTER via GCS
# Restoring Factory Settings
> ✅ **Note**
> ✅ Restoring the factory settings results in resetting the default settings, erasing adaptations and statistical data.
> ✅ **Note**
> ✅ Restoring the factory settings of ASTER requires recalibration in GCS.
**You can restore Factory Settings in 3 ways:**
## Restoring Factory Settings via GCS
Go to **General**. Open the menu in the upper right corner and select **Restore factory settings**.
## Restoring Factory Settings while in **Programming via Trigger** mode
1. Turn on the programming mode as described in **Programming via Trigger**
2. Switch the selector to SEMI
3. Pull the trigger 4 times to select **Advanced** (5 vibrations, LED glowing orange)
4. Switch the selector to AUTO
5. Pull the trigger to get to **Restore Factory Settings** (4 vibrations, LED glowing pink)
6. Confirm the **Restore Factory Settings** option by pulling the trigger for at least 3 seconds
## Restoring Factory Settings while connecting the battery
1. Disconnect the battery
2. Pull the trigger
3. While the trigger is pulled, connect the battery (ignore the warning vibrations)
4. Hold the trigger for 10 seconds until you hear 2 vibrations confirming the reset (ignore the vibrations occurring in the meantime informing about entering the programming mode)
5. Release the trigger
6. Disconnect the battery — this final step is important, as it completes the entire process.
> ✅ **Note**
> ✅ The trigger must be held down throughout the entire operation – from connecting the battery until you hear the vibrations.
# Sensor Diagnostic Mode
> ⚠️ **Caution**
> ⚠️ In order for the test to be carried out correctly, it is necessary that it is performed on the target correctly installed parts:
> ⚠️
> ⚠️ - shimmed gears – for the purpose of the test, a sector gear is sufficient
> ⚠️ - target screw-adjusted trigger – if adjustable
> ⚠️ - target selector plate with a white sticker in place.
> ⚠️
> ⚠️ **Failure to comply with the above points may result in passing the diagnostic test, however, the system may malfunction in the assembled replica!**
> ℹ️ **LED light signals during the diagnostic procedure are as follows:**
> ℹ️
> ℹ️ - **purple** – waiting for a change in the state of the tested sensor
> ℹ️ - **green **– the tested sensor is functioning correctly
> ℹ️ - **red**** **– the tested sensor is not functioning properly (no signal change within 3 seconds or insufficient signal change for correct sensor calibration). If the **red** LED light is illuminated, it is necessary to repeat the test from the beginning.
> ℹ️ **First, connect the ETU power supply and observe the changing LED light colors. If:**
> ℹ️
> ℹ️ 1. **everything is OK and the sensors are uncalibrated:**
> ℹ️ - a glowing **purple** LED signals readiness to start – a detailed description of the procedure is available in the **Successfully Passed Test** section
> ℹ️ 2. **everything is OK and the sensors are calibrated:**
> ℹ️ - a **green** LED lights up for 2 seconds (as before)
> ℹ️ - in this case, it is impossible to perform the diagnostic test for the factory – to conduct the diagnostic procedure, it is necessary to restore factory settings of the **ASTER **unit
> ℹ️ 3. **Other cases:**
> ℹ️ - **red** and **blue** LEDs flash alternately, indicating a SELF-TEST failure
> ℹ️ - the unit remains in this state until the battery is disconnected – disconnect and reconnect the battery to the unit
> ℹ️ - if problems persist during the SELF-TEST repetition, contact the technical support department: [https://help.gatee.eu/page/contact](https://help.gatee.eu/page/contact)
The first step in installing your **ASTER **is to check that the sensors correctly detect the gear, trigger, and fire selector. Sensor diagnostic mode is available in the latest versions of **ASTER with firmware versions v 4.0-02 or later**. It is used to detect the malfunction of the error sensors even before the **gearbox **is completely assembled.
**You will need:**
- gearbox shell
- ASTER
- sector gear
- trigger
- selector plate
- 2 screws
- battery
**Installation Procedure:**
1. Install **ASTER**, **sector gear**, and **trigger **in the **gearbox shell**
2. Screw the **gearbox shell** together with at least two screws
3. Install the **selector plate**
**Example of a Successfully Passed Test after the Installation Procedure:**
1. Connect the battery
2. When the LED turns **purple**,** **carry out the test procedure:
> ⚠️ **Caution**
> ⚠️ If, within 5 seconds of the **purple** LED light turning on, the sector gear sensor does not detect a change (cam-gap), the unit will revert to normal operation mode. To re-run the diagnostic test, it is necessary to disconnect and reconnect the battery.
- turn the gear so that it makes a few revolutions – **the LED temporarily turns ****green****, then back to ****purple**
- press the trigger several times in its full range of motion – **the LED temporarily turns ****green****, then back to ****purple **
- move the selector plate in the full range of its movement – **LED turns ****green again permanently – test successful**
3. You can now proceed with the rest of the installation
**Example of a Failed Test after the Installation Procedure:**
A **red **LED indicates an error in the reading of the last sensor to be checked – **a failed test**. It is necessary to repeat the test from the beginning.
> ✅ After each step, the LED should turn **green **– this means that the test was successful.
> ❌ The appearance of the **red** LED color indicates an error in reading the last checked sensor –** the test has failed**. It is necessary to repeat the test from the beginning.
> ✅ **Information**
> ✅ If it is impossible to complete the test due to a lack of sensor response, you can connect to the GCS application to read diagnostic errors and check the sensors. Afterwards, you can proceed to re-run the test.
# Troubleshooting
## My replica fires multiple shots with a single trigger pull – no DTC in the GCS app
A combination of a very soft spring and high trigger sensitivity may cause unintended firing of the replica. A trigger with a soft spring easily transmits vibrations caused by the gearbox cycle, which can lead to additional, uncontrolled shots.
Possible solutions to the issue:
- install a stiffer trigger spring
- adjust the trigger sensitivity settings in the GCS app and increase the reset point distance from the firing point (increase the trigger travel needed to fire a shot)
- recalibrate the trigger in the GCS app
- if you encounter any issues, please contact us via [https://help.gatee.eu](https://help.gatee.eu)
## **Gear Not Detected [GND] in ASTER units**
ASTER units detect the cam of the gear. Excess grease on:
- the cam itself,
- between the shims and on the top of the cam,
may cause cycle detection issues—incorrect gear detection [GND] or even requiring a double trigger pull to complete a full gearbox cycle.
Possible solutions to the issue:
- clean the sector gear sensor with a soft cloth
- remove excess grease from the cam
- remove excess grease from the shims
- in G&G gearboxes, move the board as close as possible to the gear axis
- if you encounter any issues, please contact us via [https://help.gatee.eu](https://help.gatee.eu)
## Low Battery Warnings
When activated, you are warned 5 times before the battery is discharged. Each warning is communicated by 3 vibrations: High → Mid → High.
## Vibrations after connecting the battery
ASTER can detect number of battery cells automatically. If you activate this function, vibrations start once the battery is connected. Remember to always check if ASTER detected correct number of battery cells.
## Diagnostic Trouble Codes
Diagnostic Trouble Codes (DTC) enable detecting basic malfunctions and problems with your AEG or ASTER. You are notified of the main errors with LED lights glowing in the trigger hole and vibrations. These light-and-sound sequences are activated once a malfunction takes place. DTCs can be later read and cleared in the DTC menu in GCS as well as in the Programming Mode in Advanced Settings. In the latter case, the LED light blinks the same number of times as the motor vibrates, so you can check DTCs even without a connected motor.
If DTCs are read while in **Programming via Trigger** mode:
- The LED light in the trigger hole glows in the color reflecting the issue type
- Yellow indicates a warning
- Red indicates a problem
- Red-Blue blinking alternately indicates the device failed on self-test when connecting to power supply
- Red-Yellow blinking alternately indicates other errors
- Each vibration type corresponds to an issue type
- high frequency vibrations indicate a warning
- low frequency vibrations indicate a problem
- Low-high frequency vibrations indicate the device failed on self-test
- High-low frequency vibrations indicate other errors
- The number of vibrations determines exactly what the problem is (for reference read the DTC explanations presented later on in this guide)
> ✅ **Note**
> ✅ It is good practice to clear the DTCs in GCS before each skirmish.
The table presents DTC along with their possible reasons and solutions.
| **DTC Code in GCS**
warning
error | **AST V2**
warning
error | ** DTC Name** | **Description** | **Reason** | **What to do** | **VIBRATIONS**** (as reviewed in GCS)** | **VIBRATIONS**** (as it happens)**
Very Low - 100Hz
Low - 250Hz
Mid - 500Hz
High - 1kHz |
| --- | --- | --- | --- | --- | --- | --- | --- |
| UVP1 | UVP1 | Under Voltage Protection 1 | Protection against battery over-discharge (battery protection) activated | 1. Discharged battery
2. Battery type or number of battery cells set incorrectly | 1. Charge the battery
2. Set the correct battery type or number of battery cells | High(1) Yellow | High(1) + Mid(1) + Low(1)
Yellow 1 s |
| UVP2 | UVP2 | Under Voltage Protection 2 | Voltage has dropped below a critical level for your device to work properly | 1. Discharged battery
2. The battery is worn out and there is excessive internal resistance
3. Inadequate battery type for the current AEG configuration
4. Excessive electrical resistance between your device and the battery
5. Motor too strong for the connected battery
6. Motor connection short circuit
7. Jammed motor
8. Damaged motor | 1. Charge the battery
2. Replace battery
3. Use a battery with more capacity or higher voltage
4. We recommend using a battery with a Deans-T connector; if you need to use an adaptor, check the quality
5. Use standard or high-torque motors instead of high-speed ones
6. Check and fix motor wire insulation
7. Unjam the motor
8. Replace the motor | High(2) Yellow | High(1) + Mid(1) + High(1)
Yellow 1 s |
| UVP3 | UVP3 | Under Voltage Protection 3 | Protection against battery over-discharge (battery protection) activated immediately after connecting the battery | 1. The number of cells is different from the number set in GCS
2. Discharged battery | 1. Set the same number of cells in GCS as in the battery
2. Charge the battery | High(3) Yellow | High(1) Yellow 1 s |
| OVP | OVP | Over Voltage Protection | Voltage exceeding a critical level for your device to work properly | 1. Connected battery type not supported by the unit | 1. Replace the battery | High(1) + Low(1)
Red-Yellow | High(4) + Low(1)
Red-Yellow 1 s each |
| TEMP (OTP) | OTP | Over Temperature Protection | Excessive device temperature – over-temperature protection activated | 1. The outside temperature is too high in relation to the requirements of your AEG
2. Frequent short circuits and device electrical overloads | 1. Wait until the temperature drops | Low(5)
Red | Red 1 s |
| MOTOR DISC | MOTOR DISC | Motor Disconnected | ETU did not detect the motor | 1. Motor not connected
2. Brushes worn out
3. Damaged motor | 1. Check wiring and motor connectors, connect the motor
2. Replace brushes
3. Replace the motor | High(4)
Yellow | Low(1) + Very Low(1) + Low(1) + Very Low(1)
Yellow 1 s |
| GEAR (E07 GND) | GND | Gear Not Detected | ETU did not detect any movement of the sector gear | 1. Excessive gear shimming
2. Dirty sector gear sensor
3. Jammed sector
gear
4. Damaged sector gear sensor
5. Damaged motor | 1. Remove the shims from underneath the sector gear
2. Clean sector gear sensor; inspect the sensor using GCS; alternatively set Cycle detection to OFF
3. Check the condition of the gears
4. Set Cycle Detection to OFF (you will retain minimal replica functionality) and contact us at [support@gatee.eu](mailto:support@gatee.eu)
5. Replace the motor | Low(1)
Red | Low(1) + Very Low(1) + Low(1) + Very Low(1)
Red 1 s |
| OCP1 (E11) | OCP1 | Over Current Protection Type 1 | Excessive current detected – overcurrent protection activated | 1. Motor connection short circuit
2. Motor or gearbox jammed
3. Motor damaged | 1. Check and fix motor wire insulation
2. Unjam the motor or gearbox
3. Replace motor | Low(3)
Red | Low(1)
Red 1 s |
| OCP2 (E12) | OCP2 | Over Current Protection Type 2 | Excessive current detected – overcurrent protection activated | 1. Motor connection short circuit
2. Motor or gearbox jammed
3. Motor damaged
4. Battery voltage too high for the current motor | 1. Check and fix motor wire insulation
2. Unjam the motor or gearbox
3. Replace motor
4. Replace the battery | Low(3)
Red | Low(1)
Red 1 s |
| SCP | SCP | Short Circuit Protection | Current over 220 A detected – short circuit protection activated | 1. Motor connection short circuit
2. Motor or gearbox jammed
3. Motor damaged | 1. Check and fix motor wire insulation
2. Unjam the motor or gearbox
3. Replace motor | Low(4)
Red | Red 1 s |
| SELF (E14 STF) | STF | Self-Test Failure | The device failed on self-test | 1. Device Internal Error
2. Always activated with other Device Internal Errors | 1. Clear the DTC
2. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
3. Connect your device to the battery and wait again 10s
4. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | Low(1) + High(1)
Red-Blue | Red-Blue 1 s each |
| FET1 (E01 EA01 T_Drive) | EA01 | Main Transistors Error | Main Transistors Error | 1. Device Internal Error | 1. Clear the DTC
2. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
3. Connect your device to the battery and wait again 10s
4. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | High(1) + Low(1)
Red-Yellow | Red-Blue 1 s each |
| FET2 (E02 EA02) | EA02 | Brake Transistor Error | Brake Transistor Error | 1. Device Internal Error | 1. Clear the DTC
2. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
3. Connect your device to the battery and wait again 10s
4. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | High(1) + Low(1)
Red-Yellow | Red-Blue 1 s each |
| VME1 (E03 EA03 VoltageSensor) | EA03 | Voltage Measurement Error | Voltage Measurement Error | 1. Device Internal Error | 1. Clear the DTC
2. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
3. Connect your device to the battery and wait again 10s
4. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | High(1) + Low(1)
Red-Yellow | Red-Blue 1 s each |
| TSE (E04 EA04 TempSensor) | EA04 | Temperature Sensor Error | Temperature Sensor Error | 1. Device Internal Error | 1. Clear the DTC
2. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
3. Connect your device to the battery and wait again 10s
4. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | High(1) + Low(1)
Red-Yellow | Red-Blue 1 s each |
| SEL-ERR (E08 EA08) | EA08 | Selector Error | Selector Error | 1. Badly calibrated selector
2. Outside light reaching selector sensor
3. Selector plate not reflecting light | 1. Perform selector calibration
2. Insert the gearbox into the body
3. Modify the selector plate using the sticker from the INSTALLATION KIT | High(1) + Low(1)
Red-Yellow | Low(1)
Red-Yellow 1 s each |
| TRIG-ERR (E09 EA9) | EA9 | Trigger Error | A pulled trigger detected when connecting the battery | 1. Trigger pulled while connecting the battery
2. Trigger sensitivity set too high
3. Dirty trigger sensors
4. Badly calibrated trigger
5. Attempt to enter the Programming via Trigger mode when connecting the battery
6. Emergency recovery of factory settings with trigger movement
7. Trigger sensor covered by wires | 1. Release the trigger
2. Using the GCS set a lower trigger sensitivity
3. Clean the trigger sensors
4. Check the routing of the wires inside the gearbox
5. Perform trigger calibration | High(1) + Low(1)
Red-Yellow | Low(4)
Red-Yellow 1 s each |
| SEL-SW (E10 EA10) | EA10 | Switched Selector | The selector has switched during a shot | 1. The selector was switched deliberately during a shot
2. Sensors detect switching the selector at the edge of a selector position | 1. Inspect selector sensors; if the switch takes place near one of the three selector positions (SAFE, SEMI or AUTO), you must modify the selector plate | High(1) + Low(1)
Red-Yellow | Red-Yellow 1 s each |
| CFG (E13 EA13 Config) | EA13 | Configuration Error | Configuration Error | 1. Firmware type changed
2. Device Internal Error | 1. Restore factory settings
2. Install the newest firmware
3. Clear the DTC
4. Unplug your device from the battery and Blu-Link/USB-Link and wait 10s
5. Connect your device to the battery and wait again 10s
6. Check the DTC again – if the error persists, contact us at [support@gatee.eu](mailto:support@gatee.eu) | High(1) + Low(1)
Red-Yellow | |
| SEL-CAL (E06 EA06) | EA06 | Selector not Calibrated | Selector Calibration not Performed | Selector calibration not Performed | Calibrate the selector | | Low(3)
Red-Yellow 1 s each |
| TRIG-CAL (E16 EA16) | EA16 | Trigger Not Calibrated | Trigger Calibration Not Performed | Trigger Calibration Not Performed | Calibrate the trigger | | Low(3)
Red-Yellow 1 s each |
| SEL-OE (E17 EA17) | EA17 | Selector Sensor Overexposed | Selector Sensor Overexposed | Too much external light reaching the selector sensor | Cover the gearbox against external light | High(1) + Low(1)
Red-Yellow | High(1)
Red-Yellow 1 s each |
| TRIG-OE (E18 EA18) | EA18 | Trigger Sensor Overexposed | Trigger Sensor Overexposed | Too much external light reaching the trigger sensor | Cover the gearbox against external light | High(1) + Low(1)
Red-Yellow | High(1)
Red-Yellow 1 s each |
| GEAR-OE | | Gear Sensor Overexposed | Gear Sensor Overexposed | Too much external light reaching the gear sensor | Cover the gearbox against external light | | High(1)
Red-Yellow 1 s each |
| OVL | OVL | Overload | Load Limit Exceeded | 1. BASIC firmware edition is dedicated to up to mid-tuned guns | 1. Use a high-torque motor and gears
2. Upgrade firmware to EXPERT | Low(2)
Red | |
# Technical Specifications
**The design and production of the device is based on harmonized standards.**
| | **ASTER V2 SX** | **ASTER V2 SE**
**ASTER V2** |
| --- | --- | --- |
| **Supply Voltage Range** | 3.75-12.9 V |
| **Rated Current** | 30 A |
| **Current Consumption** | 23 mA |
| **Low Power Mode** | 288 µA |
| **Dimensions (Length x Width x Height)** | 43.8 mm x 28.7 mm x 7.7 mm | 43.8 mm x 28.7 mm x 7.2 mm |
| **Finished Product Weight** | 23.35 g | 22.25 g |
| **Operating Temperature Range** | min. -15°C max. + 50°C |
| **Relative Humidity** | ≤ 80% |
# Legal Notice
Please read the Legal Notice before operating your device and keep it for future reference. This document contains important terms and conditions with respect to your device. By using this device, you accept these terms and conditions.
## Exclusion of Liability
GATE Enterprise sp. z o.o. sp. k. is not liable for any damages, injuries or accidents of any kind resulting from the use of this product or airsoft gun with the product installed, including (but not limited to) incidental or special damages to airsoft gun, airsoft gun parts, batteries and gearbox internals.
## Disclaimer
GATE Enterprise sp. z o.o. sp. k. takes no responsibility regarding compliance of the product with the requirements of any law, rule or airsoft restrictions pertaining thereto.
## Intellectual Property
Intellectual Property owned by GATE Enterprise sp. z o.o. sp. k., including but not limited to, devices, accessories, parts, software, documentation, is proprietary to GATE Enterprise sp. z o.o. sp. k. and protected under Polish laws, EU laws, and international treaty provisions. You may not violate the rights of the Intellectual Property and you will not prepare derivative works of or reverse engineer the device or software. No ownership in the Intellectual Property is transferred to you.
## GATE Limited Warranty Policy
GATE Enterprise sp. z o.o. sp. k. warrants that its Product is free from manufacturing and material defects at the date of purchase and for a period of two (2) years from the date of purchase and it is nonextendable. This Limited Warranty is conditioned upon proper use of Product by Purchaser.
This Limited Warranty is valid provided that the owner provides a proof of purchase and properly completed warranty form.
This Limited Warranty does not cover: (a) defects or damage (e.g. mechanical, thermal or chemical) resulting from accident, misuse (misinterpretation of the instructions), abuse, neglect, unusual physical, electrical or electromechanical stress, water immersion, repairs or structural modification of any part of Product, or (b) the Product that has its serial number removed or made illegible; (c) defects or damage from improper operation, maintenance or installation, (d) installation of the products.
Requests for warranty are processed as soon as possible, not exceeding seven (7) working days. The company’s obligation under this Limited Warranty shall be limited to providing replacement of parts only.
The color of the product may vary slightly depending on the batch.
## Product Disposal Instructions
The symbol shown here means that the product is classified as Electrical or Electronic Equipment and should not be disposed with other household and commercial waste at the end of its working life. The Waste of Electrical and Electronic Equipment (WEEE Directive 2012/19/EU) has been put in place to recycle products using best available recovery and recycling techniques to minimize the impact on the environment. Purchasers shall take any old electrical equipment to waste recycling public centres or points of sale.
# Product Compliance
## Declaration of Conformity
GATE Enterprise sp. z o.o. sp. k. hereby declares under our sole responsibility that the products GATE ASTER V2 and ASTER V3 are in conformity with the essential requirements of the following Directives: 2011/65/EU, 2014/30/EU, 2014/35/EU, 2001/95/WE.
# Stay tuned with GATE
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Manufactured by GATE Enterprise sp. z o.o. sp. k.
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PL-30435 KRAKÓW
email: [support@gatee.eu](mailto:office@gatee.eu)
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