Comtech EF Data SDM-309B User Manual
Page 222

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)