Comtech EF Data SNM-1001 - Manual (Page 33)

Theory of Operation SNM-1001 Network Control Modem
4–2 Rev. 1
Table 4-1. M&C Jumper Settings (AS/4973)
Configuration Jumper Position
Redundant Non-Redundant
JP10 1 to 2 Closed Open
3 to 4 Closed Open
5 to 6 Open Closed
7 to 8 Open Closed
JP 22 5 to 6 Open Closed
JP 2 1 to 2 Closed Open
2 to 3 Open Closed
JP 3 1 to 2 Closed Open
2 to 3 Open Closed
JP 11 1 to 2 CTS shorted to TX FPGA CTS shorted to TX FPGA
JP 6, JP7 2 to 3 Closed Closed
JP 18 1 to 2 Closed Closed
JP 21 2 to 3 Off Off
IF FILTER VARIABLE
ATTENUATOR
50 to 180 MHz
IF
OUTPUT SWITCH
OUTPUT
-5 to -30 dBm
IF LOOPBACK
MPC
ATTENUATOR
RF SWITCH
RF
SYNTH
REF
OSC
IMPC
MPC
DDS
0 90
VCO
SCT
EXT.
RX SAT CLK
CLOCK
TX_DATA
MPC
MPC
I
DIGITAL
NYQUIST
DAC
ALIAS
FILTER
ALIAS
FILTER
DIGITAL
NYQUIST DAC
VECTOR
ROTATION
I
Q Q
CONVOLUTIONAL
ENCODERS
SCRAMBLERS
PREAMBLE
GENERATOR
POSTAMBLE TX_CLOCK
M&C
COMMAND
BUS
MICRO-
PROCESSOR
MPC
Figure 4-1. Modulator Block Diagram