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7-5
Calibration Commands
FRAMe:LABel
FRAMe:LABel
Command :CALibrate:FRAMe:LABel <label>
This command is intended for user notes, such as name/initials of the calibrator or special
notes about the calibration. It accepts a string of up to 80 characters. The information is
optional. <label> is a string, enclosed with quotes, with a maximum of 80. characters.
Query :CALibrate:FRAMe:LABel?
The query returns the currently defined label for the frame.
Returned Format [:CALibrate:FRAMe:LABel] <quoted string><NL>
FRAMe:STARt
Command :CALibrate:FRAMe:STARt
This command starts the annual calibration on the instrument mainframe.
FRAMe:TIME?
Query :CALibrate:FRAMe:TIME?
This query returns the date, time and temperature at which the last full frame calibration
process was completed.
Returned Format [:CALibrate:FRAMe:TIME] <time> <NL>
<time> Is in the format: DD MMM YY HH:MM <delta_temp>
<delta_temp> Is the difference between the current temperature and the temperature when the last cali-
bration was done. For example, <delta_temp> might be:
–5C
10C
–12C
MODule:LRESistance
Command :CALibrate:MODule:LRESistance <resistance_value>
This command sets the load resistance value used during module calibration of a TDR mod-
ule. The accuracy of the calibration is improved by specifying the exact resistance value of
the load that is connected to the TDR module during the calibration process.
<resistance_value> is the resistance of the load from 47 to 53 ohm. The default value is the
target value of 50 ohm.
Example This example sets the load resistance value to 49.9 ohms.
10 OUTPUT 707;”:CALIBRATE:MODULE:LRESISTANCE 49.9”
Query :CALibrate:MODule:LRESistance?
The query returns the resistance value in ohms for the load used during module calibration of
a TDR module.
Returned Format [:CALibrate:MODule:LRESistance] <resistance_value><NL>