Tuneup
General Information
18
August 2004© Tait Electronics Ltd
Table 1.3
CCTM commands in the frequency-synthesizer and receiver categories
Command
Usage
Entry at keyboard
Response on screen
Frequency-synthesizer category
72 – Lock status
Reads the lock status of the RF PLL,
FCL and LO2 respectively
72
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)
101 – Radio frequencies
Sets the transmit and receive
frequencies to specified values
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)
None
334 – Synthesizer power
Switches the frequency synthesizer
on or off via the
DIG
SYN
EN
line
334
x
where
x
is the required state
(0=off, 1=on)
None
335 – Synthesizer switch
Switches the transmit-receive
switch of the frequency synthesizer
on or off via the
DIG
SYN
TR
SW
line
335
x
where
x
is the required state
(0=off, 1=on)
None
Receiver category
32 – Receive mode
Sets the radio in the receive mode
32
None
63 – RSSI level
Reads the averaged RSSI level
63
x
where
x
is the averaged level in
multiples of 0.1 dBm
376 – Front-end tuning
Sets or reads the tuning voltage for
the front-end circuitry of the
receiver
376
(to read voltage)
x
where
x
is the front-end tuning
voltage in millivolts
376
x
(to set voltage)
where
x
is the front-end tuning
voltage in millivolts
(any integer from 0 to 3000)
None
378 – Receiver output level
Reads the signal power at the
output of the channel filter
(the square of the amplitude)
378
x
where
x
is the signal power
