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Operator’s Guide CMG-1T Ocean Bottom

Seismometer

September, 1999, Issue C Section 7,

Page 1

7. SYSTEM INPUT OUTPUT SIGNAL FORMAT AND

CONNECTIONS.

The seismometer system outputs consist of the following:

a) Velocity output.

b) Mass position outputs.

c) Control command serial input/output.

d) Calibration signal.

e) System power supply.

The pin assignments for the sensor systems 37-way D type connector are shown

in the photograph below.

Allocation of the pins is as follows:

20 V+ Velocity

23 V- Velocity

24 N+ Velocity

21 N- Velocity

22 E+ Velocity

25 E- Velocity

4 V Mass Position

5 N Mass Position

6 E Mass Position

8 Signal Ground

10 Calibration Signal

30 Calibration Enable

36 +Ve Sensor Power

Continued ..........

33 +Ve Bowl/SOH Power

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Guralp-systems CMG-1T Manual de usuario Pagina 27