between J1 and J2.
J5
8.5 Compatibility of Boards
Table 8.5.1 Compatibility of FM-8800S/D Board
Board Name FM-8800S FM-8800D
CPU 05P0773 Common use Common use
TX/RX 05P0774 05P0774A 05P0774B
CH70 RX 05P0775 Common use Common use
PWR 05P0776 Common use Common use
PANEL 05P0772 Common use Common use
DUP RX 05P0777 Built-in: No Built-in: Yes
DUPLEXER Built-in: No Built-in: Yes
Change of TX/RX board (05P0774A/B)
The difference between 05P0774A and 05P0774B is whether there are connecting
DUPLEXER input/output ports, J1, J2, and J4 or not. FM-8800S and FM-8800D are
interchangeably used in case it is necessary since they share the same circuit. Same
circuits are common used for FM-8800S and FM-8800D when board is substituted.
1. In case of 05P0774-Ver. 03 and after
05P0774A: FM-8800S
Jumper between J1 and J2 on B side
05P0774B: FM-8800D
No jumper between J1 and J2
J1, J2 and J4: Installed
Fig. 8.5.1 TX/RX Board: Sample of 05P0774B-Ver.3
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