Technical data

Appendices

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Appendix B

1 Serial interface

All D190 remission densitometers are equipped with a true serial RS232 interface with bipolar levels.

1.1 Specifications

1.2 Parameters

1.3 Pin assignment of Mini DIN socket

1 HS_POWER

2 HS_OUT

3 DATA_IN

4 GND

5 DATA_OUT

6 HS_IN

7 CRG+

8 CRG-

B 1 – 1.3

Parameter Specification Remarks

Data transmission rate 110 ... 19200 baud

Data bits 8

Parity bit no parity bit

Stop bits 1

Handshake no „handshake“

software handshake: Xon/Xoff Xon = ASCII (17), Xoff = ASCII (19)

hardware handshake see 1.4

Description D190 input D190 output

Level for logic 0 -15.0 V ...+ 0.5 V - 8.0 V ... - 5.0 V at I

<1.6 mA

Level for logic 1 + 3.5 V ...+15.0 V +8.0 V ... +5.0 V at I

<1.6 mA

Input resistance > 6 kOhm