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Teledyne API Model 200AU NO
X
Analyzer Instruction Manual, 02293, Rev. F
9-15
Table 9-4: Diagnostic Mode - Signal I/O (Continued)
No. Signal Control Description
22 ST_SYSTEM_OK YES Status Bit - System OK
Logic High = No instrument warnings present
Logic Low = 1 or more alarms present
23 ST_HIGH_RANGE YES Status Bit - Autorange High Range
Logic High = M200AU in high range of autorange
mode
Logic Low = M200AU in low range of autorange
mode
24 PMT_SIGNAL NO Current PMT voltage. Same as PMT voltage in TEST
menu. Bi-polar, typically in 0-5000 mV range. A
constant value of 5000 mV indicates offscale.
25 SAMPLE_PRES NO Sample pressure in mV. Typical sea level value =
4300 mV for 29.9" Hg-A.
26 RCELL_TEMP NO Reaction Cell temperature. Typically 3500 mV for
50° C.
27 BOX_TEMP NO
Box Temperature. Typically 1800 mV for 25° C
28 BLOCK_TEMP NO Block temperature.
29 PMT_TEMP NO PMT cold block temperature. Typically 3600 mV for
10° C.
30 DCPS_VOLTAGE NO DC power supply composite voltage output.
Typically 2500 mV.
31 RCELL_PRESS NO Reaction Cell Pressure in mV. Typically 1270 mV
for 5" Hg-A at sea level. Is an absolute pressure so
higher values means higher absolute pressures.
32 OZONE_FLOW NO Ozone flowmeter voltage. Typically 2000 mV at
80 cc/min.
33 CONV_TEMP NO Molybdenum Converter temp. Typically 3150 mV at
315° C
34 HVPS_VOLTAGE NO HVPS programming voltage. Output of HVPS is
1000x value present. 700 mV = 700 VDC output.
35 DAC_CHAN_0 NO Output of NO
x
channel in mV.
36 DAC_CHAN_1 NO Output of NO channel in mV.
(table continued)