Agilent Technologies 1141A, User'S Manual And Service Manual, Page: 33 / 88

Calibrating the Probe 2
10x Attenuator Accuracy Test
1141A and 1142A User’s Guide 33
9 Record the result of this calculation in the “Calibration Test
Record” on page 42.
NOTE
Failure of the accuracy test for the 10x attenuator can be caused by
mis-adjustment of the low-frequency CMRR (LF CMRR) adjustment. Perform the
Attenuator Adapter Adjustment procedure in the Adjustments section later in this
chapter then retest the attenuator adapter. If if continues to fail, repair is
necessary.
Δ
V
out
Δ
V
in
------------
V
out 1
V
out 2
–
( )
2 V
in 1
----------------------------------
=