Keysight 34934A - Product Handling Recommendations for Maintaining > 10 GΩ DC Isolation

A Handling Considerations
236 Keysight 34934A User’s Guide
Product Handling Recommendations for Maintaining > 10GΩ DC
Isolation
Issue: Recent tests in a high temperature - high humidity environment have
revealed that contaminants on the movable jumpers of the 34934A terminal block
and configuration block may affect the published DC Isolation specification. Salts/
oils from fingertips can create electrical paths (< 10 GΩ) if these contaminants are
transferred to the surfaces of adjacent jumpers in physical contact with one
another. The paths can cause small amounts current to leak from one signal
(channel) to another. Testing in this environment has also shown that leakage
currents due to contaminants on adjacent wires of the expansion cable (used to
connect multiple 34934A matrix modules) can also affect DC isolation.
Handling - Terminal Block and Configuration Block Jumpers: The locations
of the jumpers on options 001 and 002 of the 34934T Terminal Block and on
options 001 and 002 of the 34934C Configuration Block requiring special handling
are shown in the figures below.
Terminal Block jumper locations
(34934T Option 001 shown)
Configuration Block jumper locations
(34934C Option 002 shown)