2 demod/m&c/interface test points – Comtech EF Data SNM-1001 User Manual
Page 52
SNM-1001 Network Control Modem
Maintenance
Rev. 1
5–7
5.1.3.2
Demod/M&C/Interface Test Points
TP 3
+5V
+5V
TP 4
GND
Ground
TP 11
GND
Ground
TP 12
SD
Send Data
TP 13
TT
Terminal Timing (Transmit Clock)
TP 14
RD
Receive Data
TP 15
RT
Receive Timing
TP 16
GND
Ground
TP 18
I
I Channel Analog RF Output
TP 19
Q
Q Channel Analog RF Output
TP 20
Q OFF
Analog Q Channel DC Offset Control
TP 21
Q CHAN
Q Channel Analog Anti-Alias Filter
Output
TP 22
I CHAN
I Channel Analog Anti-Alias Filter
Output
TP 24
I OFF
Analog I Channel DC Offset Control
TP 25
GND
Ground
TP 26
AGC DRV
Analog AGC Drive
TP 27
Q A/D IN
Q Channel Analog to Digital Input
TP 28
AGC CTRL
Digital AGC Control
TP 29
GND
Ground
TP 30
I A/D IN
I Channel Analog to Digital Input
TP 31
IF SYNTH REF (R143 must be populated)
IF Synthesizer Reference
TP 34
DATCLK
Data Rate Clock
TP 36
RX CLOCK
Buffer Output CLK
TP 37
DP1
Constellation I Test Point
TP 38
DP2
Constellation Q Test Point
TP 41
SYMBCK
Symbol Clock
D9
OVFL
Buffer Overflow LED
D10
UNFL
Buffer Underflow LED
D11
DON/PG
XILINX Done Programming LED