6 Calibration Procedures
Adjustments procedures
208 U3606A User’s and Service Guide
4 Use   or   to select the adjustment item.
5 Apply the input signal shown in the “Input” column of Table 6- 9.
6 Enter the actual applied input (see “Entering adjustment values” on 
page 190).
7 Press   to start the adjustment. The display “CALib” in the lower 
secondary display starts flashing to indicate that the calibration is in 
progress.
• Successful completion of the adjustment is indicated by a short beep 
and the primary display briefly showing “PASS”.
• An adjustment failure is indicated by a long beep, the primary 
display showing “FAiL” and a calibration error number appearing in 
the upper secondary display. Correct the problem and repeat this 
procedure.
8 Repeat  step 3 through step 7 for each gain adjustment point shown in 
Table 6- 9.
9 Verify the capacitance gain adjustments using the “Optional capacitance 
gain verification test” on page 172.
If the zero offset adjustment procedure has been recently performed prior 
to the capacitance gain calibration procedure, the adjustment item 
“OPEn” can be omitted.
Always complete tests in the same order as shown in Ta b l e 6 - 9 .
Table 6 - 9 Capacitance gain adjustment
Adjustment item Input capacitance
OPEn
Input terminals open (remove any test leads or 
shorting plugs from the input terminals)
0.400 nF 0.4 nF
1.000 nF 1 nF