Ecotech A Series User Manual

CHAPTER 4, DIGITAL COMMUNICATION
98307600 Rev. C-1 4-3
Signal Name Number Function
CHOPFAIL
37 Active output indicates that the chopper has failed
(Note 7).
SPAN_OOR
38 Active output indicates that the span ratio is out
of range (Note 8).
SPAREOC1
39 Spare open collector output #1
HEATERFAIL
40 Active output indicates that a system heater has
failed (Note 9).
SPAREOC2
41 Spare open collector output #2
OPTEST
42 Active output indicates that the system has been
put into the Optic Test mode.
ELECTST
43 Active output indicates that the system has been
put into the Electric Test mode.
PS-FAIL
44 Active output indicates that the 12-volt supply
voltage has gone out of range (Note 10).
HV-FAIL
45 Active output indicates that the PMT high voltage
supply has failed (Note 11).
SYSFAIL
46 The sum of all failures in the instrument
(Note 12).
POWER_ON
47 Active output indicates that power to the analyzer
is on.
SPDRVR1
48 Spare Driver #1
AGND
1,14,16 Ground reference for analog outputs.
DGND
12
PGND
13,34 Ground reference for digital inputs or outputs.
CGND
49 Chassis ground.
+12V
50 +12V (50 mA maximum).
3,4 Unused.
4.1.1.1 Notes
1. All outputs are open collector active LOW.
2. Analog output #3 is unused.
3. Analog output #1 is instantaneous gas concentration.
4. Analog output #2 is unused.

Ecotech A Series Specifications

General

Brand	Ecotech
Model	A Series
Category	Measuring Instruments
Language	English