Keithley 2000, User Manual, Page: 186 / 280

Bandwidth command
:BANDwidth <n>
[:SENSe[1]]:CURRent:AC:DETector:BANDwidth <n> Specify maximum bandwidth for ACI
[:SENSe[1]]:VOLTage:AC:DETector:BANDwidth <n> Specify maximum bandwidth for ACV
Parameters
<n> = 3 to 300e3 Specify bandwidth (in Hz)
Query
BANDwidth? Query selected bandwidth
Description
The Model 2000 uses three bandwidth settings for ACI and ACV measure-
ments; 3 (3Hz-300kHz), 30 (30Hz-300kHz) and 300 (300Hz-300kHz). To
achieve best accuracy, you should use the bandwidth setting that best reflects
the frequency of the input signal. For example, if the input signal is 40Hz,
then a bandwidth setting of 30 should be used.
These commands are used to select bandwidth for the ACI and ACV func-
tions. To set the bandwidth, simply specify (approximately) the frequency of
the input signal. The Model 2000 will automatically select the optimum
bandwidth setting.
NOTE
For bandwidth setting of 3 and 30, the normal A/D reading con-
version method is not used. Thus, the NPLC setting is only valid
for bandwidth setting of 300.
:THReshold commands
Use these commands to set the maximum range input (signal level) for fre-
quency and period measurements.
:RANGe <n>
[:SENSe[1]]:PERiod:THReshold:VOLTage:RANGe <n> Set voltage threshold range
[:SENSe[1]]:FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range
Parameters
<n> = 0 to 1010 Specify signal level in volts (voltage threshold)
Query
:RANGe? Query maximum signal level
Description
These commands are used to specify the expected input level. The instru-
ment will then automatically select the most sensitive current or voltage
threshold range.
5-48 SCPI Command Reference