Service Manual Part 1
+8.
+8/ 9
+8/8 *7
The test mode facility enables the trunked radio to emulate a multichannel radio, utilis-
ing the frequencies reserved for trunking. The radio can then be tested and aligned, as
described in Section 4 and Section 6.
There are two test modes provided: manual and computer controlled.
• Manual Test Mode (MTM): Commands are entered and test results are displayed
using the keys, LEDs and the display on the control head.
• Computer Controlled Test Mode (CCTM): Test commands are accepted via the
serial port of the radio, and test results are returned as required. Although this mode
is primarily intended for automated production testing, it may also be useful in the
field.
No test facilities have been provided for functions relating to non-trunked operating
mode (e.g. CTCSS), as these functions can be easily tested in non- trunked mode.
Within this Section, the following conventions apply:
• Characters within “ “ indicate a string sent or received via the serial communica-
tions port of the radio, e.g. a command code or an error code.
• Numbers without “ “ are function numbers, manually entered via the control head
in MTM to select particular test functions.
) When in test mode, connect the antenna socket to a dummy load to pre-
vent interference with trunking systems. Avoid testing on channels in use
locally.
+8/8 >?
Switch the radio off and remove the top cover.
Place a temporary link across the two pads labelled TEST MODE on the logic
PCB.
Switch on the radio:
• T2030 radios: all the front panel indicators will illuminate briefly.
• T2035 and T2060 radios: the display will show “- -” for a short time.
• T2040 radios: the control head will display “TEST MODE” for a short time.
Remove the link. The radio will remain in test mode until it is next switched off.