Comtech EF Data SDM-9000 - Manual (Page 60)

Configuration SDM-9000 Satellite Modem
3–2 Rev. 4
JP2 JP3 JP1 JP5 JP9 JP10
ASSEMBLY NUMBER AND
SERIAL NUMBER
Figure 3-1. Display/M&C PCB
Table 3-1. Display/M&C PCB Jumper Settings
Jumper Position Function
JP1 1 to 2
3 to 4
5 to 6
7 to 8 RS-485 Remote
RS-485 Remote
RS-232-C Remote
RS-232-C Remote
JP2 (See Note ) 1 to 2
2 to 3 4-Wire
2-Wire
JP3 (See Note) 1 to 2
2 to 3 4-Wire
2-Wire
JP5 1 to 2
2 to 3 RS-485 Remote
RS-232-C Remote
JP9 and JP10 32K
64K
128K
256K
256K 27C256 EEPROM at U17
27C512 EEPROM at U17
27C010 EEPROM at U17
27C020 EEPROM at U17
27C040 EEPROM at U17
Note: Pins JP2 and JP3 must be in the 4-wire position for RS-232-C.
RS-485 Configuration Install two jumpers (shunts) at the RS-485 positions of JP1, and
install one jumper at the RS-485 position of JP5.
For 2- or 4-wire operation, position jumpers at JP2 and JP3 to the
designated positions.
RS-232-C Configuration Install two jumpers (shunts) at the RS-232-C positions of JP1, and
install one jumper at the RS-232-C position of JP5.
Install jumpers at JP2 and JP3 for 4-wire operation.