96 34405A User’s and Service Guide
4 Performance Tests and Calibration
DC Voltage Gain Adjustment Procedure
Review the “Test Considerations” on page 71 and “Gain 
Adjustment Considerations” on page 95 sections before 
beginning this procedure. 
1 Press    to enter DC Voltage Gain Calibration. 
2 The primary display will show the uncalibrated value and 
the secondary display will show the reference value of the 
Cal Item.
3 Configure each Cal Item shown in the adjustment table 
below. 
4 Use   (Auto)  or   (Range) to select the Cal 
Item.
Ta ble 1 4 Valid Gain Adjustment Input Values
Function Range Valid Amplitude Input Values
DC Volts 100 mV, 1 V, 10 V, 100 V, 1000 V 0.9 to 1.1 x Full Scale
DC Current 10 mA, 100 mA, 1000 mA, 10 A 0.9 to 1.1 x Full Scale
Ohms 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1MΩ, 10 M Ω 0.9 to 1.1 x Full Scale
Frequency Autorange/1 kHz  Input 
≥ 100 mV rms, 900 Hz to 1100 Hz
AC Current 1 mA, 10 mA, 100 mA, 1000 mA, 10 A 0.9 to 1.1 x Full Scale 
AC Volts 10 mV, 100 mV, 1 V, 10 V, 100 V, 750 V 0.9 to 1.1 x Full Scale
Capacitance 0.4 nF, 1 nF, 10 nF, 100 nF, 1 µF, 10 µF, 
100 µF, 1000 µF, 10000 µF 
 0.9 to 1.1 x Full Scale 
DCV
NOTE
If the zero adjustment procedure has been recently performed prior to the 
DC Voltage gain calibration procedure, the Cal Item 'Short' can be 
neglected. 
34405A users guide.book  Page 96  Saturday, September 2, 2006  3:38 PM