jenway 3520, Instruction Manual

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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 3520
TXD 3 - OUTPUT FROM 3520
DTR 4 - LINKED TO DCD AND DSR
GND 5
DSR 6 - LINKED TO DCD AND DTR
RTS 7 - OUTPUT FROM 3520
CTS 8 - INPUT TO 3520
Suggested interconnections are detailed below:
3520 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
9
3520 IBM PC XT (9 way “D”)
1 DCD 1 DCD
2 RXD 2 RXD
3 TXD 3 TXD
4 DTR 4 DTR
5 GND 5 GND
6 DSR 6 DSR
7 RTS 7 RTS
8 CTS 8 CTS
9 9
NOTE: Interface Cable (Order Code: 013 203) is required.
352 050/REV A/03-03
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