Operation
Range Menu
Thermo Fisher Scientific
Model 42
i
Trace Level Instruction Manual
3-9
Figure 3–4.
Pin-Out of Rear Panel Connector in Single Range Mode
Table 3–2.
Default Analog Outputs in Single Range Mode
Channel
Connector Pin
I/O Terminal Pin
Description
1
14
1
NO Analog Output
2 33
3
NO
2
Analog Output
3 15
5
NO
x
Analog Output
4 34
7
None
5 17
9
None
6 36
11
None
Ground
16, 18, 19, 35, 37
2, 4, 6, 8, 10, 12
Signal Ground
Note
All channels are user definable. If any customization has been made
to the analog output configuration, the default selections my not apply.
▲
In the dual range mode, there are two independent analog outputs. These
are labeled simply as the “High Range” and the “Low Range”. Each
channel has its own analog output range, averaging time, and span
coefficient.
This enables the sample concentration reading to be sent to the analog
outputs at two different ranges. For example, the low NO analog output
can be set to output concentrations from 0 to 50 ppb and the high NO
analog output set to output concentrations from 0 to 100 ppb.
Dual Range Mode
