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Teledyne API T802 Paramagnetic O
2
Analyzer Operation Manual
91
5.9.2. ANALOG OUTPUT
The T802 analyzer comes equipped with four analog outputs.
The first two outputs (A1 & A2) carry analog signals that represent the
currently measured concentrating of O
2
(see Section 5.4.2).
The third output (A3) is only active if the analyzer is equipped with the
optional CO
2
.
The fourth output (A4) outputs a signal that can be set to represent the
current value of one of several test functions (see Table 5-8).
5.9.3. ANALOG I/O CONFIGURATION
The following lists the analog I/O functions that are available in the T802
analyzer.
Table 5-4: DIAG - Analog I/O Functions
SUB MENU FUNCTION
AOUT
CALIBRATED
Initiates a calibration of the A1, A2, A3 and A4 analog output channels that determines
the slope and offset inherent in the circuitry of each output.
These values are stored in the memory and applied to the output signals by the CPU
automatically.
CONC_OUT_1
Sets the basic electronic configuration of the A1 output (O
2
Concentration).
There are four options:
RANGE
1
: Selects the signal type (voltage or current loop) and level of the output
REC OFS: Allows them input of a DC offset to let the user manually adjust the
output level
AUTO CAL: Enables / Disables the AOUT CALIBRATION Feature
CALIBRATED: Performs the same calibration as AOUT CALIBRATED, but on this
one channel only.
CONC_OUT_2
Same as for CONC_OUT_1 but for analog channel A2 but only if Auto or Dual
range is selected (Oxygen high range, RNG2)
CONC_OUT_3
Same as for CONC_OUT_1 but for analog channel A3 but only if the optional CO
2
sensor is installed.
TEST OUTPUT
Same as for CONC_OUT_1 but for analog channel A4 (TEST CHANNEL)
AIN
CALIBRATED
Initiates a calibration of the A-to-D Converter circuit located on the Motherboard.
XIN1
.
.
.
XIN8
For each of 8 external analog inputs channels, shows the gain, offset,
engineering units, and whether the channel is to show up as a Test function.
1
Any changes made to RANGE or REC_OFS require recalibration of this output.
07275B DCN6418