Figure 3-5. Pin-Out Of Rear Panel Connector In Dual Range Mode; Table 3-3. Default Analog Outputs In Dual Range Mode - Thermo Scientific 42i Instruction Manual

Operation
Range Menu
3-10 Model 42i Instruction Manual
can be set to output concentrations from 0 to 50 ppb and the high NO
analog output set to output concentrations from 0 to 500 ppb.
In addition to each channel having two ranges, each channel has two span
coefficients. There are two span coefficients so that each range can be
calibrated separately. This is necessary if the two ranges are not close to one
another. For example, the low NO range is set to 0–50 ppb and the high
NO range is set to 0–20,000 ppb.
By default, in the dual range mode, the analog outputs are arranged on the
rear panel connector as shown in
and pin connections. Dual range mode may be selected from the
Mode Select" on page 3-76.
Figure 3–5. Pin-Out of Rear Panel Connector in Dual Range Mode
Table 3–3. Default Analog Outputs in Dual Range Mode
Channel Connector Pin
1 14
2 33
3 15
4 34
5 17
6 36
Ground 16, 18, 19, 35, 37
Figure 3–5. See Table 3–3
I/O Terminal Pin Description
1 NO High Range
3 NO Low Range
5 NO
7 NO
9 NO
11 NO
2, 4, 6, 8, 10, 12 Signal Ground
for channels
"Range
High Range
2
Low Range
2
High Range
x
Low Range
x
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