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IVPC Software Reference
DS-100C Operating Manual
”n”
Description
0
Temperature #1
1
Temperature #2
2
Irradiance #1
3
Irradiance #2
4
Battery Voltage
5
4 V Reference
6
0V Reference for 5.0 V scale
7
0.4 V Reference
8
0V Reference for 0.50 V scale
9
40 mV Reference
0
0V Reference for 50 mV scale
11 4 mV Reference
12 0V Reference for 5 mV scale
13 Thermocouple Reference Junction Temp.
20 PV Voltage
Option 2 is used to calibrate the gain of the analog circuit based on the 4 V
internal reference. The option 2 format does not return any values.
Option 3 sets the averaging period for all analog readings. The default value is
16,667 microseconds. This is equal to 1 60 Hz ac power cycle. Averaging over
one AC cycle helps to reduce AC noise picked up the thermocouples and
pyranometers. This value is limited to a maximum of 65,535. A value of 0,
disables all averaging.
The most common reason to use this command would be to set the tracer to
cancel power line noise that is not 60Hz. For example, 50 Hz. In that case, the
averaging constant should be set to 20000.
Example 1
command “R,5” Read 2.5 V reference.
response “*”
response “2.499”
response “>”
Example 2
command “R,C” Calibrate.
response “*”
Summary of Contents for DS-100c
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