Teledyne API Model 200AH NO
X
Analyzer Instruction Manual, 06492, Rev. G2
9-14
Table 9-4: Diagnostic Mode - Signal I/O (Continued)
No. Signal Control Description
22 ST_FLOW_ALARM YES Status Bit - Flow alarm
Logic High = Sample/Ozone flow out of spec
Logic Low = Flows within spec
23 ST_TEMP_ALARM YES Status Bit - Temperature alarm
Logic High = Rxcell, Conv, Box temps out of spec
Logic Low = Temps within spec
24 ST_DIAG_MODE YES Status Bit - In Diagnostic mode
Logic High = M200AH in Diagnostic mode
Logic Low = Not in Diag mode
25 ST_POWER_OK YES Status Bit - Power OK
Logic High = Instrument power is on
Logic Low = Instrument power is off
26 ST_SYSTEM_OK YES Status Bit - System OK
Logic High = No instrument warnings present
Logic Low = 1 or more alarms present
27 ST_HIGH_RANGE YES Status Bit - Autorange High Range
Logic High = M200AH in high range of autorange
mode
Logic Low = M200AH in low range of autorange
mode
28 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.
29 SAMPLE_PRES NO Sample pressure in mV. Typical sea level value =
4300 mV for 29.9" Hg-A.
30 RCELL_TEMP NO Reaction Cell temperature. Typically 3500 mV for
50°C.
31 BOX_TEMP NO Box Temperature. Typically 1800 mV for 25°C
32 BLOCK_TEMP NO Temperature of the sample flow control orifice.
Typically 3500 mV for 50°C.
(table continued)
