IEEE-488 Reference
4-152
Query :SOURce? Query frequency input source
Short-form format: :freq:sour?
Response message: CURR or VOLT
Description This command is used to select the input source for the signal to be measured. If connecting a
current signal to the Model 2001 (AMPS and LO INPUT terminals), select the CURRent input
source. If connecting a voltage signal (HI and LO INPUT terminals), select the VOLTage input
source.
Programming example 10 OUTPUT 716; “:freq:sour curr; sour?”
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Two commands in this program message; the first selects the current input source,
and second queries the input source.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the input source (CURR).
4.19.17 THReshold commands
:RANGe <n>
[:SENSe[1]]:FREQuency:THReshold:CURRent:RANGe <n> Set current threshold range
[:SENSe[1]]:FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range
Parameters <n> = 0 to 1 Specify signal level in amps (current threshold)
= 0 to 1000 Specify signal level in volts (voltage threshold)
= DEFault 1mA maximum signal level (current threshold)
10V maximum signal level (voltage threshold)
= MINimum 1mA maximum signal level (current threshold)
1V maximum signal level (voltage threshold)
= MAXimum 1A maximum signal level (current threshold)
1000V maximum signal level (voltage threshold)
Formats :freq:thr:curr:rang <n>
:freq:thr:volt:rang <n>
Defaults Power-up Saved power-on setup
*RST 1mA maximum signal level
10V maximum signal level
:SYSTem:PRESet 1mA maximum signal level
10V maximum signal level
Query :RANGe? Query maximum signal level
:RANGe? DEFault Query *RST default signal level
:RANGe? MINimum Query the lowest allowable signal level
:RANGe? MAXimum Query the largest allowable signal level
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