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Model 400E Instruction Manual APPENDIX A-4: M400E Signal I/O Definitions, Revision D.4
SIGNAL NAME
BIT OR
CHANNEL
NUMBER
DESCRIPTION
O3_SCRUB_TEMP
12 O
3
scrubber temperature
13 Spare
14 DAC loopback MUX
REF_GND
15 Ground reference
Rear board temperature MUX analog inputs
BOX_TEMP
0 Internal box temperature
SAMPLE_TEMP
1 Sample temperature
PHOTO_LAMP_TEMP
2 Photometer lamp temperature
O3_GEN_TEMP
3 O
3
generator lamp temperature
4–5 Spare
TEMP_INPUT_6
6 Diagnostic temperature input
TEMP_INPUT_7
7 Diagnostic temperature input
Rear board DAC MUX analog inputs
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
Rear board analog outputs
CONC_OUT_1
0 Concentration output #1
CONC_OUT_2
1 Concentration output #2
2 Spare
TEST_OUTPUT
3 Test measurement output
I
2
C analog output (AD5321), default I
2
C address 18 hex
PHOTO_LAMP_DRIVE
0 O
3
photometer lamp drive (0–5V)
I
2
C analog output (AD5321), default I
2
C address 1A hex
O3_GEN_DRIVE
0 O
3
generator lamp drive (0–5V)
1
IZS option.
04402 Rev D.4 A-21