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T200H/M and 200EH/EM Menu Trees (05147H DCN6512) APPENDIX A-4: M Signal I/O Definitions
A-29
Signal Name Bit or Channel
Number
Description
LOW_SPAN_VALVE
20
10 0 = let low span gas in
1 = let high span/sample gas in
SPAN_VALVE
3
11 0 = let span gas in
1 = let sample gas in
NO2_VALVE
16
0 = let NO
2
gas into reaction cell
1 = let NO
X
/NO gas into reaction cell
VENT_VALVE
7
12
0 = open vent valve
1 = close vent valve
13–15 Spare
Rear board primary MUX analog inputs, MUX default I/O address 32A hex
PMT_SIGNAL 0 PMT detector
HVPS_VOLTAGE 1 HV power supply output
PMT_TEMP 2 PMT temperature
CO2_SENSOR
15
3 CO
2
concentration sensor
4 Temperature MUX
5 Spare
O2_SENSOR
11
6 O
2
concentration sensor
SAMPLE_PRESSURE 7 Sample pressure
RCELL_PRESSURE 8 Reaction cell pressure
REF_4096_MV 9 4.096V reference from MAX6241
OZONE_FLOW 10 Ozone flow rate
TEST_INPUT_11 Diagnostic test input
SAMP_REST_TEMP
4
11
Sample restrictor temperature
CONV_TEMP 12 Converter temperature
TEST_INPUT_13 13 Diagnostic test input
14 DAC loopback MUX
REF_GND 15 Ground reference
Rear board temperature MUX analog inputs, MUX default I/O address 326 hex
BOX_TEMP 0 Internal box temperature
RCELL_TEMP 1 Reaction cell temperature
IZS_TEMP IZS temperature
CO2_CELL_TEMP
15
2
CO
2
sensor cell temperature
3 Spare
O2_CELL_TEMP
11
4 O
2
sensor cell temperature
TEMP_INPUT_5 Diagnostic temperature input
REM_BOX_TEMP
4
5
Remote box temperature
TEMP_INPUT_6 6 Diagnostic temperature input
MANIFOLD_TEMP
10
7 Bypass or dilution manifold temperature
Rear board DAC MUX analog inputs, MUX default I/O address 327 hex
DAC_CHAN_1 0 DAC channel 0 loopback
DAC_CHAN_2 1 DAC channel 1 loopback
DAC_CHAN_3 2 DAC channel 2 loopback
DAC_CHAN_4 3 DAC channel 3 loopback
07270B DCN6512