108 34405A User’s and Service Guide
4 Performance Tests and Calibration
• An adjustment failure is indicated by a long beep, the 
primary display showing FAiL and a calibration error 
number appearing in the secondary display. Check the 
input value, range, function, and entered adjustment 
value to correct the problem and repeat the adjustment 
step.
8 Repeat steps 3 through 7 for each gain adjustment point 
shown in the table.
9 Verify the Capacitance Gain adjustments using the 
“Optional Capacitance Performance Verification Test” on 
page 86. 
Finishing the Adjustments
1 Remove all shorting plugs and connections from the 
instrument.
2 Reset the Calibration Message (see below).
Ta ble 2 1 Capacitance Gain Adjustment
Input Function Cal Item 
Input terminals open (remove any test leads or 
shorting plugs from the input terminals)
Capacitance Open
0.4 nF 0.4 nF 
1 nF 1 nF 
10 nF 10 nF 
100 nF 100 nF 
1 
μF1 μF 
10 
μF10 μF
100 
μF100 μF
1000 
μF 1000 μF
10000 
μF 10000 μF 
34405A users guide.book  Page 108  Saturday, September 2, 2006  3:38 PM