Normal Ω Checks; Normal Loi Ω Checks; Tru Ω Checks; Tru Ω Loi Checks - Fluke 8508A User Manual

8508A
Users Manual
Ω
Normal
1. Press the
2. Press the
3. Select the required 8508A range.
4. On the Calibrator, select zero Ω and Operate. Alternatively if using a standard
5. On the 8508A press the
6. On the Calibrator, select Range Gain point Output value. Alternatively if using a
7. Note the 8508A reading. Compare the result with the allowable tolerance, taking into
8. Repeat steps 3 – 7 for the remaining ranges of the selected resistance mode. (For the
Normal LoI
Follow the procedure for Normal Ω checks ensuring that LoI is selected.
Press the Ω key. Press the CONFIG key and select LoI.
Ω
checks
Tru
Follow the procedure for Normal Ω checks except select the Ω Plus key followed by Tru
Ω instead of selecting the Ω key (2 Ω to 20 kΩ ranges only).
Ω
LoI checks
Tru
Follow the procedure for Normal Ω checks except select the Ω Plus key followed by
TruΩ instead of selecting the Ω key. Press the CONFIG key and select LoI (2 Ω to 20 kΩ
ranges only).
Ω
checks
HiV
Follow the procedure for Normal Ω checks except select the Ω Plus key followed by HiV
Ω instead of selecting the Ω key.
6-44
Checks
key.
Ω
key and select
CONFIG
resistor connect the standard resistor for a 4-wire resistance zero. (For the 200 MΩ
range and above, de-select Ex SNS on the calibrator and de-select
8508A.)
operation.
The legend will appear, and then extinguish when the zero operation has
Busy
completed.
standard resistor re-connect the standard resistor to measure its resistance.
account the actual value of the calibrator resistance output for this value or the
calibrated value of the resistance standard used.
2G Ω and 20 GΩ ranges the 8508-7000K 1 GΩ standard resistor is used in place of
the calibrator. For the 200 MΩ range and above, de-select Ex SNS on the calibrator
οn the 8508A).
and de-select
4WΩ
Ω
checks
. Ensure
4wΩ LoI
key, and select
INPUT Zero Rng
is deselected.
οn the
4WΩ
to initiate the zeroing