6 Calibration Procedures
Adjustments procedures
202 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 184).
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 167.
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 Table 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
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