Teledyne 300M instruction manual 2 I/O Signals Continued, table continued, Control, Description

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

Table 5-2: I/O Signals (Continued)

#	Signal	Control	Description
8	WHEEL_HTR	YES	Shows the status of the filter wheel heater. This has
			the same function as the LED in the power supply
			module.
9	DARK_CAL	YES	Turns off the detector input to the Sync/Demod board
			for electronics calibration.
10	ELEC_TEST	YES	Activates the Electric Test diagnostic circuitry
11	BROWNOUT_RESET	YES	Resets the DISP_BROWNOUT circuitry described
			above
12	ST_CONC_ALARM_1	YES	Status Bit - gas alarm 1
			Logic high = M300M in alarm 1 mode
			Logic low = Not in alarm 1 mode
13	ST_CONC_ALARM_2	YES	Status Bit - gas alarm 2
			Logic high = M300M in gas alarm 2
			Logic low = Not in alarm 2 mode
14	ST_FLOW_ALARM	YES	Status Bit - Flow alarm
			Logic High = Sample flow out of spec
			Logic Low = Flows within spec
15	ST_TEMP_ALARM	YES	Status Bit - Temperature alarm
			Logic High = One or more temps out of spec
			Logic Low = Temps within spec
16	ST_DIAG_MODE	YES	Status Bit - In Diagnostic mode
			Logic High = M300M in Diagnostic mode
			Logic Low = Not in Diag mode
17	ST_POWER_OK	YES	Status Bit - Power OK
			Logic High = Instrument power is on
			Logic Low = Instrument power is off
18	ST_PRESS_ALARM	YES	Status Bit - Flow alarm
			Logic High = Sample pressure out of spec
			Logic Low = pressure within spec

(table continued)

5-4