Series 2600A-FIX-TRX
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Grounded Phoenix-to-Triax Cable Adapter
2
PA-1004 Rev. A / June 2009
Connections
This section identifies the connections that are made within the cable adapter and how to connect it between the
instruments and fixtures.
WARNING
Do not touch connectors when this assembly is connected; possible exposure to hazardous
voltages could result in personal injury or death.
You must provide an additional safety barrier to prevent the possibility of electrical shock if
this cable adapter is used with an instrument capable of sourcing voltages greater the 42 V.
No interlock features are provided by this device; properly make all connections before
turning on the power to any instrumentation connected to this assembly.
describes the connection pathways between the rear-panel terminal blocks of the System SourceMeter
instruments and Models 8101-4TRX and LR-8028 test fixtures.
Table 1: Connector pathway description
Connector
Outer shield
Inner shield
Center conductor
Triax HI
LO SMU Pin 1
Guard SMU Pin 3
HI SMU Pin 4
Triax LO
LO SMU Pin 1
LO SMU Pin 1
LO SMU Pin 1
Banana GND
N/A
N/A
LO SMU Pin 1
The banana jack, which is connected to the chassis through a frequency variable resistor (FVR), can be used as a
common signal ground point for input and output LO signals.
shows the connector schematic for both the
triax connectors and the low-noise chassis ground banana jack.
