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APPENDIX A-4: M400E Signal I/O Definitions, Revision .2
SIGNAL NAME
REF_4096_MV
O3_SCRUB_TEMP
REF_GND
BOX_TEMP
SAMPLE_TEMP
PHOTO_LAMP_TEMP
O3_GEN_TEMP
TEMP_INPUT_6
TEMP_INPUT_7
DAC_CHAN_0
DAC_CHAN_1
DAC_CHAN_2
DAC_CHAN_3
CONC_OUT_1
CONC_OUT_2
TEST_OUTPUT
PHOTO_LAMP_DRIVE
O3_GEN_DRIVE
1
Internal span option.
18
BIT OR
CHANNEL
NUMBER
9
10–11
12
13
14
15
Rear board temperature MUX analog inputs
0
1
2
3
4–5
6
7
Rear board DAC MUX analog inputs
0
1
2
3
Rear board analog outputs
0
1
2
3
2
I
C analog output (AD5321), default I
0
2
I
C analog output (AD5321), default I
0
Model 400E Instruction Manual
DESCRIPTION
4.096V reference from MAX6241
Spare
O
scrubber temperature
3
Spare
DAC loopback MUX
Ground reference
Internal box temperature
Sample temperature
Photometer lamp temperature
O
generator lamp temperature
3
Spare
Diagnostic temperature input
Diagnostic temperature input
DAC channel 0 loopback
DAC channel 1 loopback
DAC channel 2 loopback
DAC channel 3 loopback
Concentration output #1
Concentration output #2
Spare
Test measurement output
2
C address 18 hex
O
photometer lamp drive (0–5V)
3
2
C address 1A hex
O
generator lamp drive (0–5V)
3
04402 Rev C.3
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