Fluke 5560A - Page 34

5560A/5550A/5540A
Service Manual
30
Calculate the Meter error (Linear Interpolation) with this formula:
where X
0
=0.1 and X
1
=1 and X is the value from the Product Output column in Table 9 for each step.
34. Connect the existing setup used for high resistance to the product for 2-W measurements and
complete steps 23 to 26 from Table 10.
35. Connect the Product, the system 5730A, and the 8588A as shown on Figure 16.
36. Disconnect the V-Guard to Ground strap on the 5730A. The DUT strap should still be connected.
37. Set the 8588A as follows: Resistance 2Wire, LoI OFF, Range (as per Table 10), NPLC 50, Guard
OFF (external guard light ring off).
Figure 16. Resistance 4W with Low Current with 5730A as Current Source
Table 9. 8588A 1G W Range Characterization
Step
8588A
Range
Product
Output
Transfer
Resistor
Transfer Value
DMM
Measurement
on Transfer
Resistor
Meter Error
(Linear Error)
DMM
Err_ppm
1
1.2 G
Ω 0.1 GΩ
MI 9331G/100 M
G
Ω GΩ
N/A
2
1.2 G
Ω 0.3 GΩ
N/A N/A N/A
µ
Ω/Ω
3
1.2 G
Ω 0.4 GΩ
N/A N/A N/A
µ
Ω/Ω
4
1.2 G
Ω 0.64 GΩ
N/A N/A N/A
µ
Ω/Ω
5
1.2 G
Ω 1 GΩ
MI 9331G/1 G
G
Ω GΩ µΩ/Ω
Y = Y
0
(X
1
-X)+Y
1
(X-X
0
)
X
1
-X
0
742A-10k
Resistance Standard
CURRENT SENSE
HI HI
LO LO
NOMINAL VALUE = 10 K:
TEMPERATURE RANGE: 18 °C TO 28 °C
MAXIMUM VOLTAGE = 30 VDC
MAXIMUM CURRENT = 3 mA
‘
CHASSIS
GROUND
10 VDC
MAX
5730A
742A-10k
8588A
5560A