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Fixture Safety Considerations
The in for mation pr esented below is a guideline and n ot an absolute r ule.
The test system design er must t ake r esponsibility for making sur e that
test progr ams, systems, an d fixtur es pose no safety hazard to test
oper ator s.
Some safety elements to con sider befor e building a fixtur e are listed
below. Ther e may be others to consider based on local statutes and
pr actices, and the n atur e of the tests being per for med.
High Voltage Hazards
Voltage values equal to or exceedin g the followin g levels (with r espect to
chassis ground) ar e con sidered to be shock hazards:
If a hazardous volt age presen t on your fixture or DUT is accessible to
oper ator s, you should provide a safety shroud. You should also war n
oper ator s of the dan ger with a high- voltage war n ing label.
For the Agilent L4532A/ 34A, ther e are thr ee main con sider ation s
r egardin g high voltage safety:
WA RNI NG
Agilent L4532A/ 34A Service Guide
60 VDC
42 Vpk
30 Vr ms
1 Make sur e that all BNC cables being used ar e r ated for the expected
voltages.
2 Make sur e that the DUT does n ot have high voltage (gr eater than 42
Vpk) circuits exposed to the operator.
3 Make sur e that floating shields on two or mor e chan nels do n ot
float at a shield- to- shield potential exceedin g 42 Vpk. Other wise, a
shroud should be used.
If the shields of two or more channels are expected to float with more than a 42
Vpk potential difference between shields, operators must be protected against
the resulting shock hazard. A shroud or cover must be provided to prevent
contact with the shields during such operations. Failure to do so may result in
electric shock.
3
Getting Started
33
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