Teledyne 6000B - Photometric analyzer User Manual

Page 23

Photometric Analyzer

Part I: Control Unit

Part I: 2-9

Teledyne Analytical Instruments

1) Test the CRC. When the CRC is open, Send a zero command

until the CRC closes (The CRC will quickly close.)

2) When the CRC closes, remove the zero command.

3) When CRC opens again, send a span command until the CRC

closes. (The CRC will quickly close.)

4) When the CRC closes, remove the span command.

When CRC opens again, zero and span are done, and the sample is

being analyzed.

Note: The Remote Bench connector (paragraph 3.3) provides signals

to ensure that the zero and span gas valves will be controlled
synchronously.

Range ID Relays: Four dedicated RANGE ID CONTACT relays .

The first three ranges are assigned to relays in ascending order—Low range
is assigned to RANGE 1 ID, Medium range is assigned to RANGE 2 ID,
and High range is assigned to RANGE 3 ID.

Network I/O: A serial digital input/output for local network protocol.

At this printing, this port is not yet functional. It is to be used in future
versions of the instrument.

RS-232 Port: The digital signal output is a standard RS-232 serial

communications port used to connect the analyzer to a computer, terminal, or
other digital device. The pinouts are listed in Table 2-3.

Table 2-3: RS-232 Signals

RS-232 Sig RS-232 Pin Purpose

DCD

Data Carrier Detect

Received Data

Transmitted Data

DTR

Data Terminal Ready

COM

Common

DSR

Data Set Ready

RTS

Request to Send

CTS

Clear to Send

Ring Indicator