Setup Menu
Teledyne API – Model T300/T300M CO Analyzer
110
5.9.3.
ANALOG I/O CONFIGURATION
The T300/T300M Analyzer comes equipped with four analog outputs.
•
The first two outputs (
A1 & A2)
carry analog signals that represent the currently
measured concentration of CO (see Section 5.4.1).
•
The third output (
A3
) is only active if the analyzer is equipped with one of the
optional 2
nd
gas sensors (e.g. O
2
or 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 5-9).
Table 5-5 lists the analog I/O functions that are available in the T300/T300M Analyzer.
Table 5-5:
DIAG - Analog I/O Functions
SUB MENU
OUTPUT
CHANNEL
FUNCTION
AOUT
CALIBRATED
ALL
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 and applied to the output signals by the CPU
automatically.
CONC_OUT_1
A1
Sets the basic electronic configuration of the
A1
output (CO Concentration).
There are four options:
•
RANGE
1
: Selects the signal type (voltage or current loop) and level of the
output.
•
REC
OFS
1
: Allows them input of a DC offset to let the user manually adjust
the output level.
•
AUTO CAL
: Enables / Disables the
AOUT CALIBRATED
feature.
•
CALIBRATED
: Performs the same calibration as
AOUT CALIBRATED
,
but on this one channel only.
CONC_OUT_2
A2
•
Same as for CONC_OUT_1 but for analog channel
A2
.
CONC_OUT_3
A3
•
Same as for CONC_OUT_1 but for analog channel
A3
but only if either the
optional O
2
or CO
2
sensors are installed.
TEST OUTPUT
A4
•
Same as for CONC_OUT_1 but for analog channel
A4
(TEST CHANNEL).
AIN
CALIBRATED
N/A
Initiates a calibration of the A-to-D Converter circuit located on the
Motherboard.
XIN1
.
.
.
XIN8
For each of 8 external analog input 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.
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Summary of Contents for T300
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