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
19	ST_HIGH_RANGE	YES	Status Bit - Autorange High Range
			Logic High = M300M in high range
			Logic Low = M300M in low range
20	ST_SYSTEM_OK	YES	Status Bit - System OK
			Logic High = No instrument warning present
			Logic Low = 1 or more alarm present
21	ST_BENCH_ALARM	YES	Status Bit - Bench Temperature Alarm
			Logic High = Bench Temp out of spec
			Logic Low = Bench Temp in spec
22	ST_SOURCE_ALAR	YES	Status Bit - IR Source Alarm
	M		Logic High = IR Source output too low
			Logic Low = IR Source output normal
23	ST_WHEEL_ALARM	YES	Status Bit - Wheel Temperature Alarm
			Logic High = Wheel Temp out of spec
			Logic Low = Wheel Temp in spec
24	CO_MEASURE	NO	IR detector reading during measure phase. Typically
			2500 - 4500 mV.
25	CO_REFERENCE	NO	IR detector reading during reference phase. Typically
			2500 - 4500 mV.
26	SAMPLE_PRESURE	NO	Sample pressure in mV. Typical sea level value =
			4300 mV for 29.9" HG-A.
27	VACUUM_PRESSUR	NO	Sample flow in mV
	E
28	SAMPLE_TEMP	NO	Sample temp in mV
29	BENCH_TEMP	NO	Optical Bench temp. typically 2270 mV for 48°C
30	WHEEL_TEMP	NO	Filter Wheel temp. typically 4770 mV for 68°C
31	BOX_TEMP	NO	Internal analyzer temp. in mV

(table continued)

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