APPENDIX A-4: Signal I/O Definitions Teledyne API - Models T703, T703U, 703E MENU TREES (05745E DCN6572)

A-22

MODELS T703, T703U, 703E I/O Signal List for Latest Revision

Signal Name Bit or

Channel

Number

Description

PHOTO_REF_VALVE 6 0 = photometer valve in reference position
1 = measure position
ZA_SHUTOFF_VALVE 7 0 = open zero air shutoff valve
1 = close
O3_PUMP_ON 8 0 = pump on for photometer to measure O3
1 = off
9–13 Spare
PHOTO_LAMP_HEATER 14 0 = O3 photometer lamp heat er on
1 = off
O3_GEN_HEATER 15 0 = O3 generator lamp heater on
1 = off
Front panel I2C keyboard, default I2C address 4E hex
MAINT_MODE 5 (input) 0 = maintenance mode
1 = normal mode
LANG2_SELECT 6 (input) 0 = select second language
1 = select first language (English)
SEQUENCE_LED 8 (output) 0 = sequence LED on (execu ting sequence)
1 = off
AUTO_TIMER_LED 9 (output) 0 = automatic timer LED on (automatic sequence timer enabled)
1 = off
FAULT_LED 10 (output) 0 = fault LED on
1 = off
AUDIBLE_BEEPER 14 (output) 0 = beeper on (for diag nostic testing only)
1 = off
Rear board primary MUX analog inputs
PHOTO_DET 0 Photometer detector reading
O3_GEN_REF_DET 1 O3 generator reference detec tor reading
2 Spare
PHOTO_SAMP_PRES 3 Photometer sample pressure
4 Temperature MUX
REGULATOR_PRESS 5 Regulator pressure
PHOTO_FLOW 6 Photometer flow
7–8 Spare
REF_4096_MV 9 4.096V reference from MAX6241
10-11 Spare
OUTPUT_FLOW 12 Output flow
13 Spare
14 DAC loopback MUX
REF_GND 15 Ground reference
Rear board temperatur e MUX analog inputs
BOX_TEMP 0 Internal box temperature
PHOTO_SAMP_TEMP 1 Photometer sample temperature
07223C DCN6572