Keithley 2790 User Manual

4-8 Model 2790 SourceMeter
®
Switch System User’s Manual
Zippertubing
®
shield
A grounded, wrap-around shield for the wiring between the switching module and the test
station should be installed. The shield is a grounded metal foil that surrounds the bundle of
wires. The foil shield prevents damage to the wire insulation. Grounding the shield to a
safety earth ground provides extra protection in case a wire conductor becomes exposed. It
also serves to reduce measurement noise caused by EMI from nearby machinery.
A recommended shield is shown in Figure 4-5. It is a Zippertubing

ZTZ-*-SH3 series
shield. As shown, the foil side wraps around the cable wires. The shield is then held in
place by fastener strips that zip together.
The ground wire of the shield is to be connected to a safety earth ground as shown in
Figure 4-6.
Figure 4-5
Zippertubing
®
shield (ZTZ-*-SH3 series)
Ground Wire
Foil Wrapper
Zipper
Connect to a known
safety earth ground.
To Keithley
Switching
Module
To Inflator
Test Signal Wires
Assembled Cable Bundle
Drawing proportions are not
scaled to actual length of the
shield and ground wire.
NOTE

Keithley 2790 Specifications

General

Brand	Keithley
Model	2790
Category	Switch
Language	English