GR-12L Optimized Digital Proportional System 6 Channel HoTT 2.4GHz Receiver OPERATING INSTRUCTION Prior to use, please read this manual thoroughly. Keep this manual in a convenient place for quick and easy reference.
BEFORE USE Thank you for purchasing 6CH HoTT 2.4GHz receiver. This system is extremely versatile and may be used by beginners and pros alike. In order for you to make the best use of your system and to fly safely, please read this manual carefully. If you have any difficulties while using your system, please consult the manual, our online Frequently Asked Questions (on the web pages referenced below), your hobby dealer, or the SJ Service Center.
INTRODUCTION SJ GR-12L/ GR-12Li/ GR-12Lm HoTT receivers are compatible with SJ T series transmitter and used to airplane, helicopter and glider. HoTT system gives user real-time information on various useful data such as user model‟s RPM, voltage, temperature, user programmable warning, and so on which are directly obtained from telemetric speed controllers equipped with this HoTT system without having to install separate sensor devices.
3. The Specification Parameter Spec Channel 6 Frequencies 2.400 – 2.483.5 GHz Modulation FHSS spread spectrum Input Voltage 3.6 ~ 8.4V Display Indicator One LED(red) Upgradable Firmware Yes(CH5) SUMD Signal Yes(CH6) Fail Safe Hold/Fail safe Ch mapping Yes When turning on or adjusting the radio control system it is essential to keep transmitter antenna at least 30 cm away from receiver antenna all the time.
2. Channel Mapping Access Receive CH mapping on transmitter then you may change to the desired channel 3. Range check Before every flying session and especially with a new model, it is important to perform a range check. All SJ aircraft transmitters incorporate a range testing system which, when activated, reduces the output power, allowing a range check. Notice that every flying must not be permitted in the range checking mode and the model is restrained on the ground.
5. Range warning Since the transmitter‟s output is much higher than that of the receiver, the user tends to be hard to notice the seriousness of the situation and try to keep full control of the model. So when the receiver signal in the down-link channel becomes too weak, the transmitter repeats a single warning beep every second. You should fly back the model towards the safe place until the warning signal ceases.
3. Telemetry setup When accessing to SETTING & DATA VIEW mode on SJ transmitter or Telemetry box, the telemetry setup menu is appeared RECEIVER 0.01 > >ALARM VOLT: 3.7V ALARM TEMP: 65`C PERIOD: 10ms SENSOR at CH5: No SUMD at CH6: No • ALARM VOLT: Low voltage warning If receiver voltage is out of the preset voltage, transmitter or telemetry box repeats a beep for every second. Setup voltage is 3.5 ~ 5.
1 ~ 6: Mixer Slave channel • Trim Offset value of mixer can be decided. You may set -30 ~ 0 ~ +30 • TRAVEL – Output ratio for - input at Master CH is programmed. You may set 100 ~ 0 ~ +100 • TRAVEL+ Output ratio for + input at Master CH is programmed. You may set 100 ~ 0 ~ +100 5. Firmware updates The latest firmware of receiver can be updated through the telemetry socket on the side of receiver in conjunction with a PC running Windows XP, Vista or 7.
Ensure to connect adapter lead to the receiver correctly Start the SJ Firmware Update Utility and select the correct COM port, “Silicon Labs CP210x USB to UART Bridge“, at [Port Select]. Choose the “HSTT receiver update“ menu. After clicking the “File Browse” button, find and select the firmware file with extension “bin” from the folder. Now click “Program” button and wait briefly until you see movement in the progress bar. It may take about 5 sec, depending on the computer.
FCC INFORMATION Graupner GR-12L HoTT #S1012 FCC ID: SNL-16003510 FCC Label Compliance Statement This device complies with Part 15C of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operation.
