User manual

Service Information
Probe Perform
ance
WARNING. This probe should be serviced only by qualified service personnel.
To avoid pers
onal injury and damage to the probe, remove the probe from any
signal source before attempting to a djust or service the probe.
Do not servi
ce electrical equipment alone. If you must service or adjust equipment
that is attached to a signal or power source, do so only when another person
capable of rendering first aid and resuscitation is present.
This section provides procedures to check the performance of the P6022 probe,
or to calibrate it. These procedures require the equipment listed. (See Table 6
on page 14.) Specifications given are the minimum necessary for accuracy.
If equipment is substituted, it must meet or exceed the specifications of the
recommended equipment. Test equipment is assumed to be correctly calibrated
and ope
rating within the given specifications.
Also, if equipment is substituted, control settings or equipment setup may need
to be a
ltered. For detailed operating instructions for the test equipment, refer to
the instruction manual for each unit.
To ens
ure measurement accuracy, check the performance of the probe and
termination whenever you begin using them with a different oscilloscope input,
especially when you have changed input capacitance. Recalibrate the probe if
necessary. Also check the calibration of the probe and termination every 1000
hours of operation, or every six months if they have been used infrequently.
Before calibrating the probe, inspect and clean it thoroughly. (See page 24,
Maintenance.) Dirty or worn mating surfaces between the transformer and the lid
can degrade low-frequency response. Clean these surfaces if n ecessary.
Calibration procedures can also be used as performance checks b y completing all
steps except those that adjust the probe. This checks the probe and termination
t
o the original performance standards without requiring you to remove the
termination cover or make internal adjustments.
P6022 Instruction Manual 13