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Comtech EF Data SDM-309B User Manual

Page 222

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SDM-309B Satellite Modem

External Channel Unit

MN/U-SDM309B Rev. #

C-C–15

Table C-1 AS/0627-3 Rev E Board Jumper Selection

JP1

TX Clock Select

Normal
Invert
Auto*

JP2

Interface Select

V.35 (-2)
Mil-188/RS232 (-3)*

JP3

RX Data

Normal*
Buffer

JP8

RX Clock

Normal*
Buffer

JP4

Address Set

0*

JP5

Address Set

0*

JP6

Address Set

1*

JP7

Address Set

1*
MIL (-3)

JP9

CTS to RTS

V.35 (Processor controller for V.35 & RS232)
Mil 188/RS422* (Hard loops CTS to RTS)

JP10

Loop Timing

REM
On
Off*

JP11

Asyn Clk Syn (-5)

Cut Shorts

JP12

SCT

1 to 2 Invert
2 to 3 Normal*

JP13

RD

1 to 2 Invert
2 to 3 Normal*

JP14

RR

1 to 2 Invert
2 to 3 Normal*

JP15

DM

1 to 2 Invert
2 to 3 Normal*

JP16

SD

1 to 2 Invert
2 to 3 Normal*

*Indicates Factory jumper settings for MIL-188/RS422 interface type.

Table C-2 AS/0627-3 Rev C Board Jumper Selection

JP1

Clock Select

Normal
Invert
Auto*

JP2

Interface Select

V.35 (-2)
Mil-188/RS232 (-3)*

JP3

RX Data

Normal*
Buffer

JP8

RX Clock

Normal*
Buffer

JP4

Address Set

1*

JP5

Address Set

1*

JP6

Address Set

0*

JP7

Address Set

0*
MIL (-3)