
Agilent B1500A/B1505A Programming Guide, Edition 11 4-61
Command Reference
CMM
CMM
The CMM command sets the SMU measurement operation mode. This command is
not available for the high speed spot measurement.
Syntax CMM chnum,mode
Parameters chnum : SMU channel number. Integer expression. 1 to 10 or 101 to 1001. See
Table 4-1 on page 4-16.
mode : SMU measurement operation mode. Integer expression. 0 to 4. mode=4
is not available for HPSMU, MPSMU, and HRSMU.
0: Compliance side measurement. Initial setting.
1: Current measurement
2: Voltage measurement
3: Force side measurement
4: Current and voltage synchronous measurement.
If mode=0, SMU measures current when it forces voltage, or measures voltage when
it forces current.
If mode=3, SMU measures current when it forces current, or measures voltage when
it forces voltage.
If mode=4, order of returned data will be compliance side data and force side data.
The mode setting is kept until the mode is changed by this command. If you want to
return it to the initial setting, enter the CMM command with mode=0.
Example
Statements
OUTPUT @B1500;"CMM 1,1"
CN/CNX
This command enables the specified channels. See Table 4-23 for the difference
between the CN command and the CNX command.
WARNING THIS COMMAND ENABLES SMU TO FORCE DANGEROUS VOLTAGES.
WHEN THE CHANNEL IS NOT IN USE, SET THE OUTPUT SWITCH TO
"OFF" WHENEVER POSSIBLE.
Execution
Conditions
No channel may be in the high voltage state (forcing more than the allowable
voltage for the interlock open condition, or voltage compliance set to more than it).
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