4- 132 Keysight E5260/E5270 Programming Guide, Edition 4
Command Reference
Command Reference
WI
The WI command specifies the staircase sweep current source and its parameters.
This command also clears the WV, WSV, WSI, and WNX command settings.
This command setting is cleared by the WV command.
Syntax • For Staircase Sweep Measurement:
WI chnum,mode,range,start,stop,step[,Vcomp[,Pcomp]]
• For Staircase Sweep with Pulsed Bias Measurement:
WI chnum,mode,range,start,stop,step[,Vcomp]
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 current output. Integer expression.
See
Table 4-5 on page 4-13.
For the linear sweep, the E5260/E5270 uses the minimum range that
covers both start and stop values to force the staircase sweep current.
For the log sweep, the E5260/E5270 uses the minimum range that
covers the output value, and changes the output range dynamically.
For the limited auto ranging, the instrument never uses the range less
than the specified range.
start, stop : Start or stop current (in A). Numeric expression. See Table 4-7 on
page 4-15. start and stop must have the same polarity for log sweep.
0 to ±0.1, 0 to ±0.2 for E5291A, or 0 to ±1 for E5280B/E5290A
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