Technical data

Gain Verification
This procedure is used to check the “full scale” reading calibration of the
multimeter. Verification checks are performed only for those functions
and ranges with unique gain calibration constants. Begin verification by
selecting a measuring function and range. Make sure you have read
“Test Considerations” on page 64.
Gain Verification Test (DC V, Resistance, DC I)
Configuration: 6
1
⁄
2
digit (slow or fast resolution – MEAS MENU)
Select each function and range in the order shown below. Compare
measurement results to the appropriate test limits shown in the table.
(Be certain to allow for appropriate source settling.)
Input
(Front)
Function
Quick
Check
34401A
Range
Error From Nominal
24 hour 90 day 1 year
100 mV
1 V
10 V
-10 V
100 V
1000 V
100
Ω
1 kΩ
10 kΩ
100 kΩ [2]
1 M
Ω [2]
10 M
Ω [2]
100 M
Ω [2]
10 mA
100 mA
1 A
2 A
DC Volts
2-Wire
Ohms[1]
and
4-Wire
Ohms
DC Current
Q
Q
Q
Q
Q
100 mV
1 V
10 V
10 V
100 V
1000 V
100
Ω
1 k
Ω
10 k
Ω
100 kΩ
1 MΩ
10 MΩ
100 MΩ
10 mA
100 mA
1 A
3 A
±6 µV
±26 µV
±190 µV
±190 µV
±2.6 mV
±26 mV
±6 mΩ
±
25 mΩ
±
250 mΩ
±
2.5 Ω
±
30 Ω
±
1.6 kΩ
±
310 kΩ
±
1.5 µA
±14 µA
±560 µA
±2.6 mA
±7.5 µV
±37 µV
±250 µV
±250 µV
±4.1 mV
±45 mV
±12 mΩ
±
90 mΩ
±
900 mΩ
±
9 Ω
±
90 Ω
±
2.1 kΩ
±
810 kΩ
±
5 µA
±35 µA
±900 µA
±3.0 mA
±8.5 µV
±47 µV
±400 µV
±400 µV
±5.1 mV
±55 mV
±14 mΩ
±
110 mΩ
±
1.1 Ω
±
11 Ω
±
110 Ω
±
4.1 kΩ
±
810 kΩ
±
7 µA
±55 µA
±1.1 mA
±3.0 mA
[1] For 2-wire ohms, these errors assume you are using Math Null. Without Math Null,
an additional 200 m
Ω of error must be added.
[2] Use shielded twisted pair Teflon
â
insulated cables to reduce settling and noise errors.
Q
: Quick performance verification test points.
4
Chapter 4 Calibration Procedures
Gain Verification
69