Guralp Systems Limited
MAN-C24-0004 - CMG-CD24-R8 User's Guide

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1. Introduction 2. Getting started 3. Digitiser configuration 4. Configuring networking 5. Connector pin-outs 6. Revision history

Section Index: 5.1. Front panel 5.2. Rear panel

Chapter 5. Connector pin-outs

5.1 Front panel

5.1.1 Inputs A to H

The front-panel input connectors are 5-way, 3.81mm headers, manufactured by Pheonix Contact, part number MC 1,5/ 5-G-3,81. Suitable mating connectors are provided but can also be obtained from good electronic component retailers.

Pin

Function

1

Inverting input (-ve)

2

Gain resistor

3

Signal ground

4

Gain resistor

5

Non-inverting input (+ve)

Wiring details for the compatible plug, Pheonix Contact part number 1827004.

5.2 Rear panel

5.2.1 Power

The power connector is a Switchcraft 712A 2.5mm barrel connector wired with the tip +ve and the shield -ve. A 12 - 15V DC regulated supply must be used. There is some variation amongst connectors labelled “ 2.5mm barrel” so it is recommended that mating connectors are purchased from GSL.

5.2.2 GPS

This is a standard 6-pin “mil-spec” socket, conforming to MIL-DTL-26482 (formerly MIL-C-26482). A typical part-number is 02E-10-06S although the initial “02E” varies with manufacturer.

Suitable mating connectors have part-numbers like ***-10-06P and are available from Amphenol, ITT Cannon and other manufacturers.

Pin

Function

A

Isolated ground

B

RS232 receive from GPS

C

RS232 transmit to GPS

D

PPS

E

not connected

F

Power +5 V

Wiring details for the compatible plug, ***-10-06P, as seen from the cable end (i.e. when assembling).

5.2.3 DATA

This is a standard DE9F (TIA-574) sub-miniature (D-sub) socket, conforming to DIN 41652 and MIL-DTL-24308. They are very widely available, as are suitable mating connectors.

Pin

Function

1

not connected

2

RS232 transmitted data (TxD)

3

RS232 received data (RxD)

4

not connected

5

Ground

6

not connected

7

not connected

8

CTS (not required)

9

RTS (not required)

Wiring details for the compatible plug, DE9M, as seen from the cable end (i.e. when assembling).

5.2.4 USB

The USB connectors are standard USB type B sockets with conventional wiring. Suitable mating connectors are widely available.

USB connections are very sensitive to wiring details so it is recommended that ready-made cables are used where possible.

5.2.5 ETHERNET

The ETHERNET connector is a standard 8P8C modular socket, conforming to TIA/EIA-568-B. It is compatible with standard 10Base-T or 100Base-TX twisted-pair Ethernet connectors.

Pin

Function

1

Tx+

2

Tx-

3

Rx+

4

Not connected

5

Not connected

6

Rx-

7

Not connected

8

Not connected

5.2.6 GPS In/Out

The GPS “daisy-chain” connector is a 0.1 inch pitch header. Compatible sockets are available from good electronic component retailers.

Pin

Function

1

NMEA non-inverting input (+ve)

2

NMEA inverting input (-ve)

3

Ground

4

Ground

5

PPS non-inverting input (+ve)

6

PPS inverting input (-ve)

Wiring details for the compatible socket.

5.2.7 Inputs

The rear-panel input connector is a standard DB25M sub-miniature (D-sub) chasis-plug, conforming to IEC 60807-3, DIN 41652 and MIL-DTL-24308. They are very widely available, as are suitable mating connectors.

Pin

Function

1

Channel 1 - Signal ground

2

Channel 1 - Non-inverting input (+ve)

3

Channel 2 - Inverting input (-ve)

4

Channel 2 - Signal ground

5

Channel 3 - Non-inverting input (+ve)

6

Channel 4 - Inverting input (-ve)

7

Channel 3 - Signal ground

8

Channel 5 - Non-inverting input (+ve)

9

Channel 6 - Inverting input (-ve)

10

Channel 6 - Signal ground

11

Channel 7 - Non-inverting input (+ve)

12

Channel 8 - Inverting input (-ve)

13

Channel 8 - Signal ground

14

Channel 1 - Inverting input (-ve)

15

Channel 4 - Signal ground

16

Channel 2 - Non-inverting input (+ve)

17

Channel 3 - Inverting input (-ve)

18

Channel 5 - Signal ground

19

Channel 4 - Non-inverting input (+ve)

20

Channel 5 - Inverting input (-ve)

21

Channel 7 - Signal ground

22

Channel 6 - Non-inverting input (+ve)

23

Channel 7 - Inverting input (-ve)

24

Channel 1 - Signal ground (duplicate - not required)

25

Channel 8 - Non-inverting input (+ve)

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1. Introduction 2. Getting started 3. Digitiser configuration 4. Configuring networking 5. Connector pin-outs 6. Revision history