Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2657A-901-01 Rev. B/December 2012 2-49
Item Description Qty Notes
(1) Protective earth (safety ground) for Model
2657A
1 Keithley Instruments Model CA-568-120 is a protective
earth (safety ground) cable assembly supplied with the
instrument.
(2) Interlock connection for Model 2657A 1 Pin 24 (INT) and Pin 22 (5 VDC) connected to test
fixture lid switch. Keithley Instruments Model 7709-308
is a 25-pin interlock male connector and can be used for
custom connections.
(3) Interlocked metal safety enclosure 1 Select a safety enclosure with an interlock that has a
normally-open (NO) switch.
(4) Protective earth (safety ground) for test
fixture
1 Redundant grounds may be required for specific test
setups (for example, setups that clamp LO).
(5) Model HV-CA-571-3 high-voltage triaxial
female panel mount to unterminated cable
assembly
3 See schematic for connections. Make sure to follow
High-voltage triaxial cable termination
(on page 2-44).
(6) Model HV-CA-554 high-voltage triaxial
cable assembly (male to male)
3
(7) Model 2657A High Power System
SourceMeter
®
instrument
1
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