Dual Range Mode; Table 3-2. Default Analog Outputs In Single Range Mode - Thermo Scientific 48i Instruction Manual

Dual Range Mode

Thermo Fisher Scientific
Table 3–2. Default Analog Outputs in Single 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.
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 CO analog output
can be set to output concentrations from 0 to 50 ppm and the high CO
analog output set to output concentrations from 0 to 100 ppm.
In addition, each CO analog output has a span coefficient. 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 CO range is set to 0–50 ppm and the high CO range is set to 0–1000
ppm.
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 3-71.
I/O Terminal Pin Description
1 CO Analog Output
3 CO Analog Output
5 None
7 None
9 None
11 None
2, 4, 6, 8, 10, 12 Signal Ground
Figure 3–5. See Table 3–3
Model 48i Trace Level-Enhanced Instruction Manual
Operation
Range Menu
▲
for channels
"Range
3-9