Teledyne T100 Manuale Utente

Only handle or work on all electronic assemblies at a properly set up ESD station.  Setting 
up an ESD safe workstation need not be complicated.  A protective mat properly tied to 
ground and a wrist strap are all that is needed to create a basic anti-ESD workstation 
(refer to figure 12-2). 

 

W r is t  S t r a p  

P r o t e c t iv e   M a t

G r o u n d   P o in t

 

For technicians that work in the field, special lightweight and portable anti-ESD kits are 
available from most suppliers of ESD protection gear.  These include everything needed 
to create a temporary anti-ESD work area anywhere. 

  Always wear an Anti-ESD wrist strap when working on the electronic assemblies 

of your analyzer.  An anti-ESD wrist strap keeps the person wearing it at or near the 
same potential as other grounded objects in the work area and allows static charges to 
dissipate before they can build to dangerous levels.  Anti-ESD wrist straps terminated 
with alligator clips are available for use in work areas where there is no available 
grounded plug. 

Also, anti-ESD wrist straps include a current limiting resistor (usually around one 
meg-ohm) that protects you should you accidentally short yourself to the 
instrument’s power supply. 

  Simply touching a grounded piece of metal is insufficient.  While this may 

temporarily bleed off static charges present at the time, once you stop touching the 
grounded metal new static charges will immediately begin to re-build.  In some 
conditions, a charge large enough to damage a component can rebuild in just a few 
seconds. 

  Always store sensitive components and assemblies in anti-ESD storage bags or 

bins:  Even when you are not working on them, store all devices and assemblies in a 
closed anti-Static bag or bin.  This will prevent induced charges from building up on 
the device or assembly and nearby static fields from discharging through it. 

  Use metallic anti-ESD bags for storing and shipping ESD sensitive components 

and assemblies rather than pink-poly bags.  The famous, “pink-poly” bags are 
made of a plastic that is impregnated with a liquid (similar to liquid laundry 
detergent) which very slowly sweats onto the surface of the plastic creating a slightly 
conductive layer over the surface of the bag. 

While this layer may equalizes any charges that occur across the whole bag, it 
does not prevent the build up of static charges.  If laying on a conductive, 
grounded surface, these bags will allow charges to bleed away but the very 
charges that build up on the surface of the bag itself can be transferred through 
the bag by induction onto the circuits of your ESD sensitive device.  Also, the 

06807C DCN6650