ZULU Telemetry
The following descriptions apply to the Zulu module in RECEIVER mode
Analogue outputs (pin 4, 5)
If enabled the ZuluRx outputs PWM signal.
The PWM may be used directly (e.g. for motor control)
The PWM signal is a proportional digital output representing the analogue input.
If the analogue input is 0V then the PWM output will be ‘0’
If the analogue input is 1/2Vcc then the PWM output will be a square wave with 50%
duty cycle, (operating at approx 23KHz)
If the analogue input is Vcc then the PWM output will be ’1’
In order to re-create an analogue signal (representing the analogue input at the transmitter)
the output should be fed through an RC network as above.
Digital outputs
CMOS / TTL compatible outputs. Can be connected directly to CMOS/TTL logic or drive
Analogue / Digital (pin 3)
This input configures output 1-2 to be analogue or digital outputs.
Note: this input is read at power up only.
Watchdog Input (pin 13)
When activated the ZuluRx module will automatically expect to receive a watchdog signal from
the ZuluTx on a regular basis (10seconds) If it has failed to receive this within a 30second
period it will assert drop all outputs and flash the RF fault output
RF fault
Direct drive to LED. Flashes when watchdog fails.
Pr
RF fault status
OFF
Flashing at 2Hz
OFF
im
el
in
ZuluRx has received watchdog correctly
No watchdog received
watchdog is inactive
y
ar
Description
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DS-ZULUT-1
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