Agilent Technologies 16451B, Operation Manual

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Troubleshooting
Mechanical Trouble
When the 16451B is mechanically defective , replace the defective
parts , refer to \Assembly Replacement", and conrm that the
electrode distance can be changed smoothly from 0 to 10 mm. If the
electrode does not move smooth it may be because the cables are
obstructing the operation.
Electrical Trouble
When the 16451B is electrically defective , check its cable connections ,
refer to Figure 4-4. The connection check points are as follows:
The Lcur and Lpot Center conductors are connected to the Guarded
Electrode .
The Hcur and Hpot Center conductors are connected to the
Unguarded Electrode .
The Lcur , Lpot, Hcur , and Hpot outer conductors are connected
to the body . (The cables' shields are connected to the body with
screws .)
The Guard Electrode is connected to the body .
Insulation resistance between the Lpot center conductor and the
Hpot center conductor is greater than 1 M.
Insulation resistance between the center conductors and the outer
conductors is greater than 1 M
If the cable connections are correct, the electrodes may be defective .
Operation Check
The Electrode P arallel A ccurate A djustment, described in \Electrode
A djustment" in Chapter 3, can be used for the before and after repair
operation check. The adjustment cannot be completed when the
16451B is electrically defective .
4-8 Service