Keysight E5260/E5270 User’s Guide, Edition 6 6-7
Function Details
Ranging Mode
Limited Auto Ranging
Limited auto ranging is similar to auto ranging. However, limited auto ranging does
not use the range(s) less than what you specified. For example, if you select 10 mA
limited auto ranging, the measurement channel does not use the 1 mA range or less.
Consequently, the measurement time for limited auto ranging is less than for auto
ranging.
Fixed Range
The channel uses the specified range only.
For the current measurement channel, if you specify a range higher than the
compliance range, the measurement channel uses the compliance range. See
“Compliance Range” on page 6-7.
Compliance Range
The compliance range is effective for the Vf/Im (voltage output and current
measurement) or If/Vm (current output and voltage measurement) channel. The
measurement channel automatically selects and uses the lowest range that covers the
specified compliance value.
For the measurement channel that performs source output set by the DI or DV
command, you can set the compliance ranging type. If you set it to limited auto
ranging, the channel does not use a range less than the specified range.
For the measurement channel that performs sweep output, you can set the power
compliance value. If you set the power compliance value, the channel uses the
lowest range that covers the lower value of either the specified compliance value or
the compliance value given by the following formula:
Current compliance = Specified power compliance value / Step voltage
Voltage compliance = Specified power compliance value / Step current
For details about setting compliance, refer to “Compliance” on page 6-9.
NOTE Range change is performed when the compliance value is set, not when the
measurement is performed.
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