Guralp Systems Limited
Radian - Technical Manual

Chapter 8. Appendix 3 – Connector pin-outs

8.1 Digital connector

This is a standard 10-pin military-specification bayonet plug, conforming to MIL-DTL-26482 (formerly MIL-C-26482).

Pin

Function

A

Ground

B

Power

C

RS422 serial transmit – positive

D

RS422 serial transmit – negative

E

RS422 serial receive – negative

F

Hole-lock out

G

Signal Ground

H

not connected

J

RS422 serial receive – positive

K

Hole-lock return

Note: The Radian connector is fitted with two O-rings to guarantee the waterproofing. To connect the cable, maintain the Radian in vertical position and roughly align the grooves in the plug with the tongues in the socket before inserting the cable connector. Kindly push and rotate the connector until it lines up perfectly. Push it to down until it reaches the end stop. Screw the fixing ring down to the end of the thread.

Caution: The air compressed inside the connector can push in the opposite direction because of the O-rings. Do not use the fixing ring to help you pushing the connector inside the Radian to prevent any damage on the thread.