5 Command Summary
108 Keysight 3458A Calibration Manual
SCAL
Description
Service Calibration. Adjusts the AC sections of the instrument. Calculates the 
corrections to accurately measure frequency and adjusts the ac ranges. The SCAL 
command is located in the full command menu.
Syntax
SCAL value [,security_code]
value
Specifies the value of the adjustment source that will be used to do the service 
adjustment of the multimeter. Valid choices for value are 1E5, 10,1, and 0.1. 1E5 
performs a frequency calibration while 10, 1, and 0.1 do ac range adjustment.
security_code
When a security code is set to a number other than 0 by the SECURE command, 
you must enter the correct security code to perform an SCAL. If SCAL is not 
secured (security code = 0), no security code is required to execute SCAL. Refer to 
the SECURE command for more information on the security code and how to 
secure the adjustment of the 3458A.
Remarks
– The SCAL command is in the full menu; it is not in the short menu.
– With a 100 kHz input, SCAL 1E5 calculates the constants allowing the 
multimeter to indicate 100 kHz.
– SCAL 10, SCAL 1, and SCAL 0.1 do ac range calibration calculating high 
frequency dac and interpolator constants.
– For fastest calibration with SCAL, the multimeter can be left in the DCV 
function.
The SCAL command is used in the AC Adjustment procedure of Chapter 3 and 
the procedure must be performed in the order specified.