Keysight E5260/E5270 Programming Guide, Edition 4 4- 147
Command Reference
Command Reference
WV
The WV command specifies the staircase sweep voltage source and its parameters.
This command also clears the WI, WSI, WSV, and WNX command settings.
This command setting is cleared by the WI command.
Syntax • For Staircase Sweep Measurement:
WV chnum,mode,range,start,stop,step[,Icomp[,Pcomp]]
• For Staircase Sweep with Pulsed Bias Measurement:
WV chnum,mode,range,start,stop,step[,Icomp]
Parameters chnum : Sweep source channel number. The value must be slot number where
the module has been installed. Integer expression. 1 to 8 (1 and 5 are
not available for HPSMU). See
Table 4-1 on page 4-9.
mode : Sweep mode. Integer expression. Only linear sweep (mode=1 or 3) is
available for the staircase sweep with pulsed bias.
1: Linear sweep (single stair, start to stop.)
2: Log sweep (single stair, start to stop.)
3: Linear sweep (double stair, start to stop to start.)
4: Log sweep (double stair, start to stop to start.)
range : Ranging type for staircase sweep voltage output. Integer expression.
See
Table 4-4 on page 4-13.
The E5260/E5270 usually uses the minimum range that covers both
start and stop values to force the staircase sweep voltage. However, if
you set Pcomp and if the following formulas are true, the E5260/E5270
uses the minimum range that covers the output value, and changes the
output range dynamically (20 V range or above). Range changing may
cause 0
V output in a moment. For the limited auto ranging, the
instrument never uses the range less than the specified range.
• Icomp > maximum current for the output range
• Pcomp/output voltage > maximum current for the output range
start, stop : Start or stop voltage (in V). Numeric expression. See Table 4-6 on
page 4-14. start and stop must have the same polarity for log sweep.
0 to ±100, or 0 to ±200 for E5280B/E5290A
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