Advanced Features

Model GFC7001E Carbon Dioxide Analyzer

7.3.SETUP MORE DIAG: USING THE DIAGNOSTICS FUNCTIONS

A series of diagnostic tools is grouped together under the SETUPMOREDIAG menu, as these parameters are dependent on firmware revision (see Appendix A). These tools can be used in a variety of troubleshooting and diagnostic procedures and are referred to in many places of the maintenance and trouble-shooting sections of this manual.

The various operating modes available under the DIAG menu are:

Table 7-5: Diagnostic Mode (DIAG) Functions

DIAG SUBMENU

SUBMENU FUNCTION

Front Panel Mode

MANUAL

Indicator

SECTION

 

 

SIGNAL I/O

Allows observation of all digital and analog signals in

DIAG I/O

 

the instrument. Allows certain digital signals such as

13.1.3

 

valves and heaters to be toggled ON and OFF.

 

 

 

 

 

 

ANALOG OUTPUT

When entered, the analyzer performs an analog

DIAG AOUT

 

output step test. This can be used to calibrate a

13.5.7.1

 

chart recorder or to test the analog output accuracy.

 

 

 

 

 

 

 

This submenu allows the user to configure the

 

 

 

analyzer’s analog output channels, including

 

 

ANALOG I/O

choosing what parameter will be output on each

 

 

channel. Instructions that appear here allow

DIAG AIO

7.4.1

CONFIGURATION

adjustment and calibration of the voltage signals

 

 

 

associated with each output as well as calibration of

 

 

 

the analog to digital converter circuitry on the

 

 

 

motherboard.

 

 

 

 

 

 

 

When activated, the analyzer performs an electrical

 

 

ELECTRICAL

test, which generates a voltage intended to simulate

 

9.6.4

the measure and reference outputs of the

DIAG ELEC

TEST

13.5.6.2

SYNC/DEMOD board to verify the signal handling

 

 

 

 

 

and conditioning of these signals.

 

 

 

 

 

 

 

Disconnects the preamp from synchronous

DIAG DARK

 

DARK

demodulation circuitry on the SYNC/DEMOD PCA to

9.6.1

CALIBRATION1

establish the dark offset values for the measure and

CAL

 

reference channel.

 

 

 

 

 

 

PRESSURE

Allows the user to calibrate the sample pressure

DIAG PCAL

9.6.2

CALIBRATION1

sensor.

FLOW

This function is used to calibrate the gas flow output

DIAG FCAL

9.6.3

CALIBRATION1

signals of sample gas and ozone supply.

TEST CHAN

Selects one of the available test channel signals to

DIAG TCHN

7.4.6

OUTPUT

output over the A4 analog output channel.

 

 

 

 

 

 

1 These settings are retained after exiting DIAG mode.

 

 

Teledyne Analytical Instruments

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Teledyne GFC 7001EM operation manual Setup  More  Diag Using the Diagnostics Functions