Cctm Commands In The Frequency-Synthesizer And Receiver Categories - Tait TM9100 Service Manual

Table 4.5

CCTM commands in the frequency-synthesizer and receiver categories

Command
Frequency-synthesizer category
72 – Lock status
Reads the lock status of the RF PLL,
FCL and LO2 respectively
101 – Radio frequencies
Sets the transmit and receive
frequencies to specified values
301 – Calibrate VCXO
Calibrates the VCXO of the FCL
302 – Calibrate VCO(s)
Calibrates the VCO(s) of the
frequency synthesizer
334 – Synthesizer power
Switches the frequency synthesizer
on or off via the line
DIG SYN EN
335 – Synthesizer switch
Switches the transmit-receive
switch of the frequency synthesizer
on or off via the
DIG SYN TR SW
389 – Synthesizer mode
Sets the mode of the frequency
synthesizer to fast or slow
Receiver category
32 – Receive mode
Sets the radio in the receive mode
63 – RSSI level
Reads the averaged RSSI level
376 – Front-end tuning
Sets or reads the tuning voltage for
the front-end circuitry of the
receiver
378 – Receiver output level
Reads the signal power at the
output of the channel filter
(the square of the amplitude)
TM9100 Service Manual
© Tait Electronics Limited August 2005
Entry at keyboard
72
101 x y 0
where x is the transmit and y the
receive frequency in hertz
(any integer from 50 000 000 to
1000 000 000)
301 0 10
302 0 10
334 x
where x is the required state
(0=off, 1=on)
335 x
where x is the required state
(0=off, 1=on)
line
389 x
where x is the required mode
(0=slow, 1=fast)
32
63
376 (to read voltage)
376 x (to set voltage)
where x is the front-end tuning
voltage in millivolts
(any integer from 0 to 3000)
378
Usage
Response on screen
x y z
where x is the RF PLL, y the FCL,
and z the LO2 lock status
(0=not in lock, 1=in lock)
None
Four KVCXO control sensitivity
values, followed by message with
results of calibration attempt
Eight KVCO control sensitivity
values, followed by message with
results of calibration attempt
None
None
None
None
x
where x is the averaged level in
multiples of 0.1 dBm
x
where x is the front-end tuning
voltage in millivolts
None
x
where x is the signal power
General Information 115