86 General Information TP9100 Service Manual
© Tait Electronics Limited May 2005
4.4 Test Equipment Setup
Introduction This section covers the setting up of the test equipment for servicing the
radios, as well as related aspects:
■ setting up of test equipment, including test unit
■ basic programming and calibration tasks
■ invoking CCTM (computer-controlled test mode)
■ summary tables of CCTM commands and error codes
■ visual and audible indications provided by radio
Connect Equipment Connect the test equipment to the radio as shown in Figure 4.2. Use the test
unit, cables and adaptor of the service kit. Refer to “Tools, Equipment and
Spares” on page 81 for details of the test equipment and service kit.
The test unit is described in “TOPA-SV-024 Test Unit” on page 319.
For testing receive and transmit functions respectively, the switches of the
test unit must be set as described below. (When programming or calibrating
radios the switches have no effect, although it is good practice to set the
MODE switch to “RX”.)
Settings for
Receive Tests
For receive tests set the switches on the test unit as follows:
■ HOOK switch : “OFF HOOK”
■ MODE switch : “RX”
■ AUDIO IN switch : “OFF”
■ AUDIO OUT switch: “SPEAKER” or “LOAD”
In the last-named case, with the switch in the “S
PEAKER” position, the
received audio is output from the test unit’s speaker. In the “L
OAD” position a
16Ω load is switched into the circuit in place of the test unit’s speaker.
Note, however, that the
AUDIO OUT switch has no effect on the radio’s speaker.
Settings for
Transmit Tests
For transmit tests set the switches on the test unit as follows:
■ HOOK switch : “OFF HOOK”
■ MODE switch : “RX” initially
■ AUDIO IN switch : “MIC AUDIO”
■ AUDIO OUT switch: (immaterial)
When ready to transmit, set the
MODE switch to the “TX/PTT” position.
This switch functions in the same way as the PTT switch on the radio.
Service CD Install the programming and calibration applications on the test PC. These
applications are included on the service CD supplied with the service kit.
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