Compliance Considerations; Compliance Limits; Types Of Compliance; Maximum Compliance Values - Keithley 2430 Service Manual

Compliance considerations

Compliance limits

When sourcing voltage, you can set the SourceMeter to limit current from 10nA to 3.15A.
Conversely, when sourcing current, you can set the SourceMeter to limit voltage from 0.2mV
to 105V. The SourceMeter output will not exceed the programmed compliance limit.

Types of compliance

There are two types of compliance that can occur: "real" and "range." Depending on which
value is lower, the output will clamp at either the displayed compliance setting ("real") or at the
maximum measurement range reading ("range").
The "real" compliance condition can occur when the compliance setting is less than the high-
est possible reading of the measurement range. When in compliance, the source output clamps
at the displayed compliance value. For example, if the compliance voltage is set to 1V and the
measurement range is 2V, the output voltage will clamp (limit) at 1V.
"Range" compliance can occur when the compliance setting is higher than the possible read-
ing of the selected measurement range. When in compliance, the source output clamps at the
maximum measurement range reading (not the compliance value). For example, if the compli-
ance voltage is set to 1V and the measurement range is 200mV, the output voltage will clamp
(limit) at 210mV.

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
200mV
2V
20V
100V
10μA
100μA
1mA
10mA
100mA
1A
3A
Maximum
compliance value
210mV
2.1V
21V
105V
10.5μA
105 μA
1.05mA
10.5mA
105mA
1.05A
3.15A
Performance Verification 1-7