Teledyne 100AH instruction manual Signal I/O Diagnostic Diagnostic Mode Signal I/O, 10-13

Teledyne API Model 100AH SO2 Analyzer Instruction Manual, 02417, Rev. D

10.1.3.1		Signal I/O Diagnostic
	Table 10-4: Diagnostic Mode - Signal I/O
	No.	Signal	Control	Description
	0.	DSP_BROWNOUT	NO	Display brownout is used to keep the display from
				getting corrupted during low line voltage
				conditions. Circuitry on the Status/Temp board
				(01086) senses low line voltage and sets this bit.
				The CPU reads this and generates the
				BROWNOUT_RST signal described below.
	1.	EXT_ZERO_CAL	NO	Shows state of status input bit to cause the
				M100AH to enter Zero Calibration mode. Use to
				check external contact closure circuitry.
	2.	EXT_SPAN_CAL	NO	Shows state of status input bit to cause the
				M100AH to enter the Span Calibration mode. Use
				to check external contact closure circuitry.
	3.	EXT_LOW_SPAN	YES	Shows state of status input bit to cause the
				M100AH to enter the Low Span Calibration mode.
				Use to check external contact closure circuitry.
	4.	ZERO_VALVE	YES	Switches the Zero valve. Use this bit to test the
				Zero valve function.
	5.	CAL_VALVE	YES	Switches the Sample valve. Use this bit to test the
				valve function.
	6.	HIGH	YES	Energizes the high span valve. Use this bit to test
		_SAPN_VALVE		the valve function.
	7.	RCELL_ HEATER	NO	Shows the status of the reaction cell heater. This has
				the same function as the LED in the power supply
				module.
	8.	ELEC_TEST	YES	Turns on electric test bit in Preamp. Should be used
				for troubleshooting Preamp circuit. We recommend
				you use the ELEC TEST button in the DIAG menu
				to operate electric test.
	9.	OPTIC_TEST	YES	Turns on optic test bit in Preamp. Should be used
				for isolating PMT detector system from the rest of
				the Preamp circuit. We recommend you use the
				OPTIC TEST button in the DIAG menu to operate
				optic test.

(table continued)

10-13