TB8100 Service Manual Power Amplifier Fault Finding 133
© Tait Electronics Limited September 2006
Recommended Test
Equipment Set-up
The recommended test equipment set-up for the initial checks is shown in
Figure 8.3 on page 134 (28V PA) and Figure 8.4 on page 135 (12V PA).
The operation of the CTU is described in the TBA0STU/TBA0STP
Calibration and Test Unit Operation Manual (MBA-00013-xx).
Important Ensure that the reciter is configured and calibrated cor-
rectly, and is of the same frequency band as the PA under
test.
When using a desktop power supply to power a 12V PA,
ensure the supply leads are of a suitable gauge to prevent
excess voltage drop. The recommended gauge is 8AWG or
8mm².
Note If the reciter is fitted with a TaitNet RS-232 system interface
board, connect the PC directly to the reciter (refer to Figure 3.2
on page 73).
Note If the reciter is fitted with a TaitNet Ethernet system interface
board, and the PC is connected to the control panel, run the Serv-
ice Kit and connect to the base station, then power up the base sta-
tion. Refer to TN-1142-AN for full Ethernet connection details.
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