Guralp Systems CMG-3T - Manual (Page 50)

CMG-3T
9 RS232 receive at instrument (RS232 control interface option)
10 Calibration signal (all channels)
11 Calibration enable, N/S channel
12 Calibration enable, vertical channel
13 Power ground
14 Velocity +ve, vertical channel
15 Calibration enable, E/W channel
16 Velocity –ve, vertical channel
17 Power +ve
18 Velocity +ve, N/S channel
19 Centre
20 Velocity –ve, N/S channel
22 Velocity +ve, E/W channel
23 Velocity –ve, E/W channel
24 Unlock
25 Mass position, vertical channel
26 RS232 ground (RS232 control interface option)
In sensors with the RS232 control interface option, the RS232 ground
line (pin 26) is isolated from the other ground lines (pins 4 and 8)
using 10 nF decoupling capacitors.
6.4 Breakout box POWER connector
This is a standard 10-pin mil-spec plug (02E-12-10P).
Pin Function
A 0 V
B +12 V DC supply
H –12 V DC supply
50 Issue N