Guralp Systems CMG-DM24 User Manual
Page 74
Operator’s Guide DM-24 Digitiser
Issue G January 2003
72
DATA PORT (RS422)
Module and Standalone
FUNCTION
CONNECTOR
02E-12-10P
+ Vin (Digitizer and Sensor Power 10 to 36
Volts)
B
0 Vin (Digitizer and Sensor Power 0 Volts)
A
COM1 +Tx
K
COM1 -Tx
C
COM1 +Rx
J
COM1 -Rx
D
COM1 GROUND
G
GPS PORT
Module and Standalone
FUNCTION
CONNECTOR
02E-12-10P
Terminal Tx (Transmit to the terminal)
E
Terminal Rx (Receive from terminal)
F
+V Supply to GPS from sensor
B
0V Supply to GPS
A
COM2 Tx (Transmit to GPS)
J
COM2 GROUND
G
COM2 Rx (Receive data from GPS)
K
1Hz Reference, RS232 Level Isolated
C
Terminal GND
H
Terminal connections are not isolated. COM2 connections to GPS are all optically
isolated.