Section 13: LPT library function reference
Model 4200A-SCS Parameter Analyzer Reference Manual
13-114
4200A-901-01 Rev. C / February 2017
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)
PMU source range (V)
RPM source range (V)
0.8
n/a
40
0.2
10
n/a
0.01
10
10 or 40
0.001
n/a
10
0.0001
n/a
10 or 40
0.00001
n/a
10
0.000001
n/a
10
0.0000001
n/a
10
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
(on page 13-98)
(on page 13-107)
(on page 13-124)
