Keithley SourceMeter 2425, Service Manual

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Model 2425 Service Manual Performance Verification 1-9
Maximum compliance values
The maximum compliance values for the measurement ranges are summarized in
Table 1-2.
Table 1-2
Maximum compliance values
Measurement
range
Maximum
compliance value
200mV
2V
20V
100V
10
μ
A
100
μ
A
1mA
10mA
100mA
1A
3A
210mV
2.1V
21V
105V
10.5
μ
A
105
μ
A
1.05mA
10.5mA
105mA
1.05A
3.15A
When the SourceMeter goes into compliance, the “Cmpl” label or the units label (i.e.,
“mA”) for the compliance display will flash.
Determining compliance limit
The relationships to determine which compliance is in effect are summarized as follows.
They assume that the measurement function is the same as the compliance function.
• Compliance Setting < Measurement Range = Real Compliance
• Measurement Range < Compliance Setting = Range Compliance
You can determine the compliance that is in effect by comparing the displayed compli-
ance setting to the present measurement range. If the compliance setting is lower than the
maximum possible reading on the present measurement range, the compliance setting is
the compliance limit. If the compliance setting is higher than the measurement range, the
maximum reading on that measurement range is the compliance limit.