Jenway 3510 User Manual

Page 26

351 050/REV B/09-06

SECTION 6

Interfacing

6.1 Analogue

All units are provided with 2 x 4mm sockets, marked as ANALOG OUT, on the rear panel. An analogue
output voltage of 1mV per least significant digit is available from these sockets. Recorder output
±2000mV, proportional to displayed reading:

1mV per 0.01pH (pH measurement and calibration modes)
1mV per 1mV (mV measurement mode)

6.2 RS232

The Bi-directional RS232 interface is available on the rear panel 9 way D type connector.
The connections are as follows:

DCD 1

- LINKED TO DTR AND DSR

RXD 2

- INPUT TO 3510

TXD 3

- OUTPUT FROM 3510

DTR 4

- LINKED TO DCD AND DSR

GND 5
DSR 6

- LINKED TO DCD AND DTR

RTS 7

- OUTPUT FROM 3510

CTS 8

- INPUT TO 3510

Suggested interconnections are detailed below:

3510

IBM PC XT (25 way “D”)

1 DCD

DCD 8

2 RXD

RXD 3

3 TXD

TXD 2

4 DTR

DTR 20

5 GND

GND 7

6 DSR

DSR 6

7 RTS

RTS 4

8 CTS

CTS 5