Compliance Limit - Keithley 6430 Instruction Manual

3-4 Basic Source-Measure Operation
NOT E

Compliance limit

When sourcing voltage, the SourceMeter can be set to limit current (from 1fA to 105mA).
Conversely, when sourcing current, the SourceMeter can be set to limit voltage (from 200µV to
210V). The SourceMeter output will not exceed the compliance limit.
Table 3-1 summarizes compliance limits according to range. See Section 5 for more details
on compliance limits.
T a ble 3-1
Compliance limits
Measurement range
* Only available when using the Remote PreAmp.
Load regulation – The voltage specification for V-source mode load changes is
0.01% +100µV. This means that on the 200mV range, the load current can be
changed from zero to full scale with less than 1.02mV of error. Calculation:
error = (0.01% × 0.2V) + 100µV
= 0.02mV + 100µV
= 0.12mV
Assuming a 0 to 100mA change in current, the output impedance equates to 1.2m Ω
(0.12mV/100mA = 1.2m W). This level can only be achieved using 4-wire sensing.
Maximum compliance
200mV
002V
020V
200V
001pA*
010pA*
100pA*
001nA*
010nA*
100nA*
001µA
010µA
100µA
001mA
010mA
100mA
value
210mV
002.1V
021V
210V
001.05pA
010.5pA
105pA
001.05nA
010.5nA
105nA
001.05µA
010.5µA
105µA
001.05mA
010.5mA
105mA