User's Manual Part 6

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673) 
  
;(!
The following table describes the T2000-80 pad connections found on the bottom side of
the T2000-80 PCB.
Pad Signal Description
S22 BCD1 Connect to S15 pins 9 (BCD0) and 10 (BCD1) on T2010 logic PCB for
channel remote switching. Enabled in software.
S23 BCD0
S24 TX-REG Output indicating whether the radio is transmitting or receiving.
Used for modem control applications.
Tx = +5V
Rx = 0V
S25 Spare Uncommitted line to S21
S35 CGND True ground used for RF decoupling capacitors. Must be connected
to radio chassis if logic and T2000-80 PCBs are folded out during
set-up and test.