Teledyne 300 Instruction Manual page 60

28 BENCH_TEMP
29 WHEEL_TEMP
30 BOX_TEMP
31 DCPS_VOLTAGE
32 DAC_CHAN_0
33 DAC_CHAN_1
34 DAC_CHAN_2
35 DAC_CHAN_3
36 CO_CONC_1
37 CO_CONC_2
38 TEST_OUTPUT
5.2.3 D/A output
This test cycles 3 of the analog output channels from 0% to 100% of Full Scale in 20%
FS steps. It starts by outputting 0 volts to all four channels and displaying a 0% button.
Then, every five seconds, the output is increased 20% FS and the button is changed
accordingly. Thus, the button (and the analog outputs) will cycle through the following
value
To pause the output at the current voltage, press the n% button. To resume automatic
cycling, press the n% button again.
5.2.4 Electric Test
This test activates a diagnostic circuit located on the Synchronous Demodulator board
which generates an artificial signal which simulates the output of the IR detector. This
signal is injected in place of the detector output.
When activated, Electric Test will automatically switch the analyzer into a 50 ppm range
and result in the Analyzer producing a constant, stable output (i.e. CO reading) of about
40 ppm. This test is particularly useful in isolating problems, since it exercises
essentially all electronic sub-systems of the Analyzer but does not depend on the proper
function of Optical or Pneumatic subsystems.
P/N 02163G Teledyne API Model 300 CO Analyzer Instruction Manual - Page 54
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
TABLE 5.2 I/O SIGNALS
0%, 20%, 40%, 60%, 80%, 100%, 0%, ...
Optical Bench temp. Typically 2270
mV for 48 C
Filter Wheel temp. Typically 4770
mV for 68 C
Internal analyzer temp in mV
DC power supply composite voltage
output. Typically 2500 mV.
Output of DAC 0(REC) in mV.
Output of DAC 1(DAS) in mV.
Output of DAC 2(TEST) in mV.
Output of DAC 3(Spare) in mV.
CO Reading (REC) in mV
CO Reading (DAS) in mV
Test Channel in mV