Keithley SourceMeter 2410 User Manual

2-8 Connections 2400 Series SourceMeter
®
User’s Manual
Guarding methods
Cable guard
Use the high-impedance (cable) guard connection scheme shown in Figure 2-4 for the fol-
lowing source-measure condition:
•Test circuit impedance is >1GΩ.
Note that cable guard must be selected for this connection scheme. See “Guard selection,”
page 2-12, to select cable guard.
A test fixture is typically used when testing high-impedance devices. The test fixture
reduces noise and protects the user from a potentially hazardous voltage on the guard
shield (or plate). See Section 6, “Guard,” for details on using guard.
Note that the test fixture chassis is connected to In/Out LO to reduce noise.
Figure 2-4
High-impedance guarding (cable guard)
INPUT/
OUTPUT
4-WIRE
SENSE
HI
LO
IEEE-488
(ENTER IEEE ADDRESS
WITH FRONT PANEL MENU)
V, Ω
GUARD
GUARD
SENSE
WARNING: NO INTERNAL OPERATOR SERVICA
CAUTION: FOR CONTINUED PROTECTION AGAINST FIR
RS232
DUT
Connect to earth safety ground
using #18 AWG wire or larger.
Guard Shield Test Fixture
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Keithley SourceMeter 2410 Specifications

General

Brand	Keithley
Model	SourceMeter 2410
Category	Measuring Instruments
Language	English