Specifications

PL 3120/PL 3150/PL 3170 Power Line Smart Transceiver Data Book 243
NOTES:
1. 1/16 inch conductive sheet stock covering bench-top
work area.
2. Ground strap.
3. Wrist strap in contact with skin.
4. Static neutralizer. (Ionized air blower directed at work.)
Primarily for use in areas where direct grounding is im-
practical.
5. Room humidifier. Primarily for use in areas where the
relative humidity is less than 45%. Caution: building
heating and cooling systems usually dry the air causing
the relative humidity inside a building to be less than
outside humidity.
R = 1 M Ω
1
2
3
4
5
R = 1MΩ
Figure D.3 Typical Manufacturing Work Station
Wave-solder Operations
The following steps should be observed during wave-solder operations.
• The solder pot and conductive conveyor system of the wave-soldering machine must be grounded to an earth
ground.
• The loading and unloading work benches should have conductive tops which are grounded to an earth ground.
• Operators must comply with precautions previously explained.
• Completed assemblies should be placed in antistatic containers prior to being moved to subsequent stations.
Board Cleaning Operations
The following steps should be observed during board cleaning operations.
• Vapor degreasers and baskets must be grounded to an earth ground. Operators must likewise be grounded.
• Brush or spray cleaning should not be used.
• Assemblies should be placed into the vapor degreaser immediately upon removal from the antistatic container.
• Cleaned assemblies should be placed in antistatic containers immediately after removal from the cleaning
basket.
• High-velocity air movement or application of solvents and coatings should be employed only when module
circuits are grounded and a static eliminator is directed at the module.
• The use of static-detection meters for line surveillance is highly recommended.
• Equipment specifications should alert users to the presence of CMOS devices and require familiarization with
this specification prior to performing any kind of maintenance or replacement of devices or modules.
• Do not insert or remove CMOS devices from test sockets with power applied. Check all power supplies to be
used for testing to be certain there are no voltage transients present.
• Double-check the equipment setup for proper polarity of voltage before conducting parametric or functional
testing.
• Do not reuse shipping rails. Continuous use causes deterioration of their antistatic coating.
• Wrist straps and equipment logs should be maintained and audited on a regular basis. Malfunctioning wrist
straps can go unnoticed and as equipment is occasionally moved ground connections may inadvertently be
forgotten.