2-Wire Ohms Verification - Fluke 8808A Calibration Manual

2-Wire Ohms Verification

To verify the 2-Wire Ohms function of the Meter, connect it to the test equipment as
shown in Figure 3-3 and apply the resistances listed in Table 3-5.
8808A
INPUT SENSE
V
2W/4W
HI
1000 V CAT I
1000V
MAX
750V 600 V CAT II
1V
LO
500 V pk
200 mA
MAX 10 A
MAX
mA
Nominal
Range
Input
0 Ω 200 Ω 0.008 Ω
190 Ω 200 Ω STD+0.046 Ω
0 kΩ 2 kΩ 0.00004 kΩ
1.9 kΩ 2 kΩ STD+0.00033 kΩ
0 kΩ 20 kΩ 0.0004 kΩ
19 kΩ 20 kΩ STD+0.0033 kΩ
0 kΩ 200 kΩ 0.004 kΩ
190 kΩ 200 kΩ STD+0.033 kΩ
0 MΩ 2 MΩ 0.00006 MΩ
Connect 57X0A and 5725A Callibrator to the UUT as follows:
4 W
Set 57X0A to EXT Sense and 2-wire Comp On
HI
300V
LO
10A
NC
NC
UUT
Input HI
Input LO
Input HI
Input LO
Note: Connect the 57X0A sense leads to the UUT first!
Figure 3-3. 2-Wire Ohms Test Setup
Table 3-5. 2-Wire Ohms Verification Steps
90-Day Test Limit
High
-0.008 Ω
[1]
STD-0.046 Ω
-0.00004 kΩ
[1]
STD-0.00033 kΩ
-0.0004 kΩ
[1]
STD-0.0033 kΩ
-0.004 kΩ
[1]
STD-0.033 kΩ
-0.00006 MΩ
Performance Verification and Calibration
57X0A
Output
Output
Sense
Sense
Low High
0.008 Ω
[1]
STD+0.065 Ω
0.00006 kΩ
[1]
STD+0.0044 kΩ
0.0006 kΩ
[1]
STD+0.0044 kΩ
0.006 kΩ
[1]
STD+0.044 kΩ
0.00008 MΩ

2-Wire Ohms Verification

57X0A
OUTPUT SENSE
Ω
V A VA
WIDEBAND
HI HI
LO LO
HI
AUX GROUND
GUARD
CURRENT
HI
LO
HI
LO
ffw002.eps
1-Year Test Limit
Low
-0.008 Ω
[1] [1]
STD-0.065 Ω
-0.00006 kΩ
[1]
STD-0.0044 kΩ
-0.0006 kΩ
[1]
STD-0.0044 kΩ
-0.006 kΩ
[1] [1]
STD-0.044 kΩ
-0.00008 MΩ
3
[1]
[1]
3-7