Auto Range Mode; 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 48i Instruction Manual

Operation
Range Menu

Auto Range Mode

3-10 Model 48i Trace Level-Enhanced Instruction Manual
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
Note All channels are user definable. If any customization has been made
to the analog output configuration, the default selections my not apply.
The auto range mode switches the CO analog outputs between high and
low ranges, depending on the concentration level. The high and low ranges
are defined in the Range menu.
For example, suppose the low range is set to 50 ppm and the high range is
set to 100 ppm (Figure
output based on low range selection and sample concentrations above 50
ppm are output based on high range selection. When the low range is
active, the status output is at 0 volts. When the high range is active, the
status output is at half of full-scale.
I/O Terminal Pin
1
3
5
7
9
11
2, 4, 6, 8, 10, 12
3–6). Sample concentrations below 50 ppm are
Description
CO High Range
CO Low Range
None
None
None
None
Signal Ground
▲
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