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Comtech EF Data SDM-9000 User Manual

Page 60

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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.