Tuneup
General Information
20
August 2004© Tait Electronics Ltd
Invoking CCTM
Using the terminal program, place the radio in CCTM as follows:
1.
Enter the character
^
to reset the radio.
2.
As soon as the radio is reset, the letter
v
is displayed. (If an
uppercase letter
V
appears, this implies a fault.)
3.
Immediately the letter
v
is displayed, enter the character
%
. (The
character
%
must be entered within half a second of the letter
v
appearing.)
4.
If the character
%
is accepted, the character
–
is displayed in
response, and the message
CL
(two-digit display) or
C
(one-digit
display) appears on the radio’s LCD screen. This implies that the
radio has entered CCTM. If the attempt fails, repeat Steps 1 to 3.
CCTM Error Codes
Once the radio is in CCTM, the CCTM commands may be entered as
shown in Table 1.1 to Table 1.5. Depending on the command, a
response might or might not be displayed. If an error occurs, an error
code will be displayed. Possible error codes are listed in Table 1.6.
Table 1.5
CCTM commands in the transmitter category (part 2)
Command
Usage
Entry at keyboard
Response on screen
Transmitter category
331 – Final bias 1
Sets or reads the bias voltage for
the first PA
331
(to read value)
x
where
x
is the DAC value of the
bias voltage (an integer from 0 to
255)
331
x
(to set value)
where
x
is the DAC value of the
required bias voltage
(any integer from 0 to 255)
None
332 – Final bias 2
Sets or reads the bias voltage for
the second PA
332
(to read value)
x
where
x
is the DAC value of the
bias voltage (an integer from 0 to
255)
332
x
(to set value)
where
x
is the DAC value of the
required bias voltage
(any integer from 0 to 255)
None
