C3.20 T854 Initial Tuning and Adjustment M8SL2-00-002-812
© Copyright Tait Electronics Limited August 2004. All rights reserved.
Remove and fit the following resistors:
4. Double-sided tape is attached to the bottom side of the plug-in board. Remove the
protective film from the double-sided tape to expose its adhesive surface.
5. The plug-in board is mounted in the T854 microcontroller cavity. Plug J1, the con-
nector on the bottom side of the plug-in board, into SK805 on the T854 main
board.
6. Firmly press down on the edges of the plug-in board so that the double sided tape
bonds to the top of the microcontroller.
7. Connect the ribbon-cable between J2 on the plug-in board, and the auxiliary
D-Range board.
3.10.2.2 T800-10-0520 Testing/Alignment
Equipment required
• 50Ω power meter
• Suitable attenuator, e.g. 3dB.
Forward alarm
1. Connect the power meter to the transmitter output.
2. Key up the transmitter and set the output power to the desired low forward-
power alarm threshold-point.
3. Adjust RV2, the forward-power alarm preset, until the forward alarm LED (DS2)
just turns ON.
3B: Fit %R308 and %R310 in
the exciter cavity. Use 10k
Ω
SMD0805 (IPN: 036-15100-10).
3A: Remove R841 and R840
from the microcontroller cavity.
Fit the plug-in
board into the
microcontroller
cavity.
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