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Install Test Fixture in the Safety Enclosure Hood
Mounting the Coaxial Shunt Resistor
Two characterized coaxial shunt resistors are available for the PD1500A:
The coaxial shunt must be installed on the DUT modules. It must be removed and
re-installed when changing DUT modules. It also must be removed and shipped
to a Keysight Service Center for annual characterization.
Figure 11 Coaxial Shunt Resistor
1 Remove both small nuts from the Shunt Resistor.
2 Screw the Top Nuts as far as possible to the top of the
3 Screw the Mounting Bushing against the top nuts.
4 Insert the threaded shaft of the Shunt on the DUT
5 Hand tighten one of the small nuts on the bottom of
6 Screw the Mounting Bushing to the bottom,
7 Tighten the Top Nut(s) against the Mounting
8 Tighten the second small nut against the first
44
– PD1000-61901, 0.01 (supplied with PD1500A)
– PD1000-61902, 0.1 (optional)
Mounting
Bushing
Two Small
Nuts
PTFE Insulator (not visible in this photo, it is press-fit into the housing)
Shunt Resistor.
Module. The PTFE Insulator must touch the top of the
PC board.
the DUT Module.
against the DUT Module. Hand tighten only.
Bushing. Hand tighten only.
small nut on the bottom of the module. Hand
tighten only.
Hand-tighten nuts and Mounting Bushing only. The Mounting
Bushing must rest against the large circular copper pad on the
Module. Ensure all nuts are snug. Do not use a wrench to tighten
the nuts; do not over-tighten. Over-tightening the nuts may cause
the PTFE insulator to split.
Mounting the Coaxial Shunt Resistor
Top
Model and
Nuts
Serial Number
label on Barrel
Keysight Double-Pulse Test System Installation Guide
BNC Connector
(to PD1000-60002
Protection Probe)
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