Reference; Avoiding Damage From Overvoltage; Avoiding Damage From Electrostatic Discharge - Tektronix TekConnect 80A03 Instruction Manual

Reference

Avoiding Damage from Overvoltage

Avoiding Damage from Electrostatic Discharge

80A03 TekConnect Probe Interface Module Instruction Manual
This section contains information you may need to take measurements or to avoid
damaging the 80A03 TekConnect Probe Interface Module.
Know your signal source. If it is capable of delivering overvoltages, it is safer to
not depend on the signal source settings for protection, but instead use an external
attenuator that protects the input from the worst-case conditions. For example, for
a 20 V maximum source connected to a 3 V maximum sampling module, use a
10X attenuator. Where possible, connect your cables to the signal source first,
and to the sampling module second.
You can use a Tektronix 80A02 EOS/ESD Protection Module to protect the
sensitive input stage of sampling module from damage due to electro-overstress
(EOS) and electro-static discharge (ESD) from the device under test (DUT). Use
the 80A02 in applications such as TDR circuit-board testing and cable testing
where large static charges can be stored on the device under test.
Install the 80A02 EOS/ESD Protection Module between the device under test
(DUT) and the sampling module. When used with the P8018 TDR probe,
the 80A02 achieves static protection using normal probing procedures — no
intentional user intervention (such as stepping on a foot switch) is required. This
eliminates instrument damage due to human error in coordinating probing with
control switching to achieve static protection.
Circuitry in the sampling module is very susceptible to damage from electrostatic
discharge or from overdrive signals. Be sure to only operate the sampling module
in a static-controlled environment. Be sure to discharge to ground any electrostatic
charge that may be present on the center and outer connectors of cables before
attaching the cable to the sampling module.
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