Troubleshooting - Fluke 1623 User Manual

Fluke 1623
Users Manual

Troubleshooting

Follow the steps in Table 3 and refer to Figure 9 for steps 1-5.
Step
External voltage (Uext) too high
1
If the external voltage applied to the instrument is too high, usually
from leakage currents in the system under test, no measurement can
be started (see "Technical data" for Uext limit).
Hint:
Auxiliary earth electrode resistance (RH) too high
2
If the auxiliary earth electrode resistance is too high it is not possible
to drive the current necessary for reliable measurements. The
measurement is blocked (see "Technical data" for Rh limit).
Hint:
auxiliary earth stake.
Probe resistance (Rs) too high
3
If the probe resistance is too high measurements are not reliable.
The measurement is blocked (see "Technical data" for Rs limit).
Hint:
probe stake.
Weak batteries
4
If the batteries are weak the supply voltage may break down during
measurement. If there is enough energy to complete the
measurement "
valid. If not, a reset occurs.
Hint:
Is your R
5
Probe S/P2 must be outside the potential gradient areas of E/C1 and
H/C2 for accurate measurements. Normally a probe distance of
more than 20m is sufficient. However in some environmental
14
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Table 3. Troubleshooting
Reposition probe (S/P2) and restart measurement.
Check connection of test lead with terminal H/C2, check
Check connection of test lead with terminal S/P2, check
" symbol is displayed - measuring results are
Replace batteries. Use 6 alkaline AA-type (LR6) batteries.
measurement result reliable?
A
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