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Telemetry System
SPC (Supplementary Power Connection) System
Optima Series Receiver Features
Optima Series Receiver Features and setup
It is critical that before each flight session you perform a range check that confirms the signal between the receiver and transmitter is
appropriate.
Unlike the FM/PPM or PCM signal radios, 2.4GHz systems use a fixed shorter, stubby transmitter antenna so the traditional method of range
checking your system by lowering the transmitter antenna will not work.
We instead use a power-down mode to reduce the transmitter signal strength. Once the power-down mode is activated it runs for about
90 seconds, shortening the effective range 100 feet (30 m).
During this power-down mode that you should walk away from the secured aircraft carrying the transmitter to a distance of approx. 30 meters,
testing the effective range.
Currently there is a direct feedback telemetry function available in your Hitec 2.4 system.
Plans are to have many more devices available in the future.
Check the Hitec website at
www.hitecrcd.com
for more up-to-dated information.
The Hitec Spectra 2.4 Module and Optima Series receivers feature full telemetry capabilities (except Optima 6) and include a Low Receiver
Battery Warning as a basic function.
The low battery voltage warning level can be customized with the HPP-22 & PC program.
When 2.4GHz system and HV servos are used together, we strongly recommend using large capacity battery pack with fully charged
condition, and constantly monitor the battery status. Also when ESC, with BEC, is used it is strongly recommended to obtain enough
capacity (Approximately more than 3A).
Hitec’s exclusive optional receiver power system allows you to directly power the receiver from the main motor power battery of an electric
powered aircraft. Up to 35 Volts can be fed directly into the receiver to power JUST THE RECEIVER FUNCTION. (It will not power the servos)
Almost all servos will burn-up if more than 6 Volts are used over a short period of time. Some Hitec servos are rated to be used at 7.4Volts.
You will still need to supply power for your servos with a four or five cell NiMH receiver battery, 2 cell Li-Po, a regulator set-up, or a
commercially available BEC with enough capacity (3A or more capacity is recommended).
The SPC system was partially created to be integrated into future Hitec telemetry system devices.
SPC Receiver Connection Diagram
Range Check Function
How to use Power-Down
Low Battery Warning
The 2.4GHz system will automatically recognize the receiver battery voltage among 4 and 5 cell
NiMH or NiCd batteries and warns you, and also 2S LiPo/LiFe battery packs can be used with battery
warning level customization. (HPP-22 required)
- When battery level is high(4cell > 4.5V, 5cell > 5.6V): The red module LED glows constantly.
- When battery level is low(4cell < 4.5V, 5cell < 5.6V): Blue LED glows constantly and the red LED will blink fast.
You will hear a continuous loud beep from the module as a low receiver battery warning.
Upon hearing the alarm, we advise you to bring back the aircraft and land at once.
Testing the FAIL-SAFE Setting
- If FAIL-SAFE is deactivated, the FAIL-SAFE position settings are also deleted!
- The FAIL-SAFE settings should be checked every time before you run the engine/motor.
a. Move the sticks to positions other than the FAIL-SAFE settings, and then switch off the transmitter.
The servos should now move to the FAIL-SAFE positions previously stored, after the HOLD period (1 sec.) has elapsed.
How to turn FAIL-SAFE Off and reactivate the Hold Mode
a. Switch on the transmitter, then the receiver. Wait for the system to boot and you have control over the model.
b. Press and hold the receiver function button for 6 seconds and release it. After 2 seconds the red and blue LEDs will blink rapidly.
c. Push the function button once shortly, during the time LED blinks. (approx. 5 seconds)
d. FAIL-SAFE Mode is now deactivated, and HOLD mode is activated instead.
e. Turn off the transmitter and the receiver to save the setting.
f. Turn the system back on to use it.
3Sec.
90Sec.
Press the function button on the back of transmitter and
hold for 3 seconds.
Release the button to enter the mode.
Power Down Mode is actvated for 90 second countdown starts
from the time the button released.
After 3 second Optic 6 Sport will beep once to notify you that
the system is in Power Down Mode.
If you are unable to accomplish a successful range check of 90 feet, DO NOT ATTEMPT TO FLY.
Note : Check the Hitec web site for more information on the availability of telemetry systems in the future.
