Keysight 41800A Active Probe
19
Operation
Operating Precautions
Operating Precautions
This paragraph describes precautions for using the 41800A to prevent from
damage on the 41800A and your Device Under Test (DUT).
Anti-static Precautions
The 418OOA is sensitive to electrostatic discharge (ESD). The followings must
be adhered to when using the 41800A.
•
Do NOT touch the probe pin:
The probe input circuit is highly susceptible to damage by ESD
introduced through the probe pin.
•
Eliminate ESD on your body:
Wear a snug-fitting ground strap that is connected to earth ground
through a 1 M
Ω
resistor.
•
Eliminate ESD on the work surface:
A grounded anti-static bench mat is recommended. Optional floor mats
provide an extra measure of protection, especially in areas with floor
carpet. Do NOT use the 41800A on a carpeted work surface.
•
Hold the probe by the protective sleeve:
Always hold the probe by the retracted ground protective sleeve to
eliminate residual ESD on your body.
•
Do NOT introduce ESD into the OUT while the probe is in use:
If an unprotected person touches a part of the DUT, a static surge could
damage the DUT as well as the probe.
Maximum Allowable Level
Maximum allowable level (ac+dc) to the probe is ±50 V (±200 V when used with
a divider).
Discharging The Probe
Measuring a node having a DC voltage potential charges the blocking
capacitors inside the 41800A probe. Ground the probe pin after measuring
such nodes to discharge probe capacitor. Failure to do this could result in
damage to sensitive circuits in the DUT, especially if it is an active device.
