Operating Instructions Model 360E Instruction Manual The pin assignments for the Status Outputs are: Table 6-24: Status Output Pin Assignments
OUTPUT # Status Definition Condition
1 SYSTEM OK On if no faults are present.
2 CONC VALID On if CO2 concentration measurement is valid.
If the CO2 concentration measurement is invalid, this bit is OFF.
3 HIGH RANGE On if unit is in high range of DUAL or AUTO range modes.
4 ZERO CAL On whenever the instruments zero point is being calibrated.
5 SPAN CAL On whenever the instruments span point is being calibrated.
6 DIAG MODE On whenever the instrument is in diagnostic mode.
7 ALARM1 On whenever the measured CO2 concentration is above the set point for
ALM1
8 ALARM2 On whenever the measured CO2 concentration is above the set point for
ALM2
D EMITTER BUSS The emitters of the transistors on pins 1-8 are bussed together.
+ DC POWER + 5 VDC
Digital Ground The ground level from the analyzer’s internal DC power supplies.
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