IEEE-488 Reference
3-101
Setting STATe to OFF with AVER:TYPE set to NONE will set AVER:STAT to OFF.
:RANK <NRf>
[:SENSe[1]]:VOLTage[:DC]:MEDian:RANK <NRf> Specify median rank for Volts
[:SENSe[1]]:CURRent[:DC]:MEDian:RANK <NRf> Specify median rank for Amps
[:SENSe[1]]:RESistance:MEDian:RANK <NRf> Specify median rank for Ohms
[:SENSe[1]]:CHARge:MEDian:RANK <NRf> Specify median rank for Coulombs
Parameters <NRf> = 1 to 5 Specify rank
Query :RANK? Query rank
Description The number of sample readings used for the median calculation is determined by the selected
range (1 to 5) as follows:
Sample readings = (2 × R) + 1
where; R is the selected range (1 to 5)
For example, a rank of 5 will use the last 11 readings to determine the median; (2 × 5) + 1 = 11.
Each new reading replaces the oldest reading, and the median is then determined from the up-
dated sample of readings.
3.19.12 :DAMPing <b> [:SENSe[1]]:CURRent:DC:DAMPing <b> Control damping for Amps
[:SENSe[1]]:RESistance:DAMPing <b> Control damping for Ohms
Parameters <b> = 0 or OFF Disable damping
1 or ON Enable damping
Query :DAMPing? Query state of damping
Description This command is used to control damping for the Amps and Ohms function. Damping is used
to decrease noise caused by high input capacitance. However, damping will also slow down the
response of the measurement.
Note that damping is only valid for the lowest two current ranges (20pA and 200pA ranges).
3.19.13 :GUARd <b> [:SENSe[1]]:VOLTage:DC:GUARd <b> Control guard for Volts
Parameters <b> = 0 or OFF Disable guard
1 or ON Enable guard
Query :GUARd? Query state of guard
Description This command is used to control guard for the Volts function. When enabled, preamp output
high (which is used as guard) is placed on the inner shell of the triax input connector. When dis-
abled, input LO is placed on the inner shell of the triax connector. For detailed information on
guard, see paragraphs 2.4.4 and 2.5.3 (Guarding).
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