Keithley 4200A-SCS Reference Manual page 959

Section 13: LPT library function reference
The measure range types for the PMU are:
•
Fixed: Use this range type to specify a fixed measure range (Vrange or Irange).
•
Limited Auto: Select this range type to use the fixed measure as the lowest range that will be
used for automatic ranging.
•
Auto: Use this range type to automatically select the optimum measure range. The specified fixed
measure range (Vrange or Irange) is not used when autorange is enabled, but must be a valid
range.
The current ranges available depend on the source range and whether the system includes a 4225-
RPM, as shown in the next table.
Current measure range (A)
0.8
0.2
0.01
0.001
0.0001
0.00001
0.000001
0.0000001
Auto or limited autoranging is available only when using the advanced mode in the pulse_exec
command. Ranging is controlled per channel and may be combined with load-line effect
compensation (LLEC) and thresholds. See pulse_limits command for thresholds.
The Segment Arb pulse mode does not allow range changes (no autorange) in a Segment Arb
waveform definition. Only fixed ranging is available for the Segment Arb pulse mode.
Example
pulse_ranges(PMU1, 1, 10, 0, 10, 0, 0.2);
This example sets the source-measure ranges for channel 1 of PMU1, where:
•
Instr_id = PMU1
•
chan = 1 (channel 1)
•
VSrcRange = 10 V
•
Vrange_type = Auto (0)
•
Vrange = 10 V (value ignored because V-measure autorange is set)
•
Irange_type = Auto (0)
•
Irange = 200 mA (value ignored because I-measure autorange is set)
Also see
PMU and RPM measure ranges are not source ranges
pulse_exec (on page 13-98)
pulse_limits (on page 13-107)
rpm_config (on page 13-124)
13-114
Model 4200A-SCS Parameter Analyzer Reference Manual
PMU source range (V)
n/a
10
10
n/a
n/a
n/a
n/a
n/a
(on page 5-44)
RPM source range (V)
40
n/a
10 or 40
10
10 or 40
10
10
10
4200A-901-01 Rev. C / February 2017
®