Teledyne 300M - Manual (Page 58)

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A
5.2 Diagnostic Tests
The diagnostic tests are used to help diagnose a problem in the analyzer and should only be used
by skilled maintenance people since they can potentially interfere with the Carbon Monoxide
reading. Table 5-1 lists low level diagnostic tests. To get into the diagnostic test mode, press
SETUP-MORE-DIAG. When the diagnostic mode is entered, a message is sent to the RS-232
channel indicating entry into the diagnostic mode. The buttons that are available to the operator
are described below.
The TEST button is used to scroll through the test measurements until the one of interest is
displayed. To turn the test on, press the OFF/ON button. Viewing test measurements in the
diagnostic mode is especially useful for viewing the results of a diagnostic test.
The PREV button goes to the previous diagnostic test. When pressed, the CPU turns the current
diagnostic test OFF if it is ON. The NEXT button goes to the next diagnostic test. When pressed,
the CPU turns the current diagnostic test OFF if it is ON. The EXIT button exits the diagnostic
mode and turns all the diagnostic tests OFF. This ensures that a diagnostic test is not accidentally
left ON. A message is also sent to the RS-232 channel to indicate that the diagnostic mode has
been exited.
Table 5-1: Diagnostic Tests
TEST # Name Signal Nominal Value
1. NONE No output 0 mV
2. CO MEASURE CO detector measure value 4500 mV
3. CO
REFERENCE
CO detector reference value 4200 mV
4. SAMP PRESS Sample pressure 3650 mV
5. SAMP FLOW Sample flowrate 2000 mV
6. SAMP TEMP Sample temperature 3000 mV
7. BENCH TEMP Optical bench temperature 3900 mV
8. WHEEL TEMP Outputs filter wheel temp. 3900 mV
9. CHASSIS TEMP Outputs Chassis temp 2740 mV
10. DCPS VOLT Outputs DC power 2500 mV
11. DAS AVERAGE Current DAS average Any
5-2