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Operating Instructions

Model GFC7000TA Carbon Dioxide Analyzer

Teledyne Analytical Instruments

115

4. Connect a cable between the Multidrop/LVDS card J4 and the motherboard P12.

5. Connect a cable between the Multidrop/LVDS card J3 and the CPU COM1 connector.

6. Close the instrument.

7. Using straight-through, DB9 male  DB9 Female cable, interconnect the host and the analyzers

as shown in Figure 6-14.

8. BEFORE communicating from the host, power on the instruments and check that the Machine ID

code is unique for each (see Section Analyzer ID). On the front panel menu, use
SETUP>MORE>COMM>ID. Note that the default ID is typically the model number; to change the
4-digit identification number, press the button of the digit to be changed)..

NOTE:

Teledyne Instruments recommends setting up the first link, between the Host and

the first analyzer and testing it before setting up the rest of the chain.

Analyzer

Last Analyzer

Female DB9

Male DB9

RS-232

COM2

RS-232

COM2

RS-232

COM2

RS-232

COM2

Host

RS-232 port

Make Sure

Jumper between

JP2 pins 21



is installed.

KEY:

Figure 6-10:

RS232-Multidrop PCA Host/Analyzer Interconnect Diagram