Teledyne M300E 5:Diagnostic Mode DIAG Functions, Signal I/O, Diag I/O, Analog Output, Diag Aout

Teledyne API – Technical Manual - Model 300E Family CO Analyzers Advanced Features

7.3.SETUP  MORE  DIAG: USING THE DIAGNOSTICS FUNCTIONS

A series of diagnostic tools is grouped together under the SETUPMOREDIAG 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
	the instrument. Allows certain digital signals such as	DIAG I/O	13.1.3
	valves and heaters to be toggled ON and OFF.
ANALOG OUTPUT	When entered, the analyzer performs an analog
	output step test. This can be used to calibrate a	DIAG AOUT	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	DIAG ELEC	9.6.4
	the measure and reference outputs of the
TEST			13.5.6.2
	SYNC/DEMOD board to verify the signal handling
	and conditioning of these signals.
DARK	Disconnects the preamp from synchronous	DIAG 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.

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