B&K Precision 5491B - Manual - Manual (Page 54)

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Command Parameter:
= 0.1, 1, 10 Set power line cycles per integration
DEFault 1
MINimum 10
MAXimum 0.1
Query:
:NPLCycles? Query programmed NPLC value
Description:
The integration period (measurement speed) for the basic measurement functions (except
Frequency and Period) is set using the :NPLCycles command. NPLC (Number of Power Line
Cycles) expresses the integration period by basing it on the power line frequency. For example, for a
PLC of 1, the integration period in seconds would be 1/60 (for 60Hz line power) which is 16.67 ms.
:RANGe Commands
:[UPPer]
Command syntax:
: CURRent:AC:RANGe[:UPPer] Set measurement range for ACI
: CURRent:DC:RANGe[:UPPer] Set measurement range for DCI
Command Parameter:
= 0 to 20 Expected reading is AC volts (ACI)
-20 to 20 Expected reading is DC volts (DCI)
DEFault 20 (ACI, DCI)
MINimum 0 (All functions)
MAXimum Same as DEFault
Query:
:RANGe[:UPPer]? Query measurement range of the current function.
Description:
This command is used to manually select the measurement range for the specified measurement
function. The range is selected by specifying the expected reading as an absolute value. The
instrument will then go to the most sensitive range that will accommodate that expected reading. For
example, if you expect a reading of approximately 10 mA, simply let the parameter = 0.01 (or
10e-3) in order to select the 20 mA range.
:AUTO
Command syntax:
: CURRent:AC:RANGe:AUTO Set auto range for ACI
: CURRent:DC:RANGe:AUTO Set auto range for DCI