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6 Quick Results Guide

Connecting Remote PreAmp to the mainframe

WARNING Potentially hazardous source voltage is routed from the mainframe to the

Remote PreAmp via the preamp cable. Adhere to the following safety precau-

tions to prevent electric shock:

The SourceMeter must be turned off before connecting (or disconnecting) the

Remote PreAmp to the mainframe.

When not using the Remote PreAmp, disconnect the preamp cable at the rear

panel of the mainframe. DO NOT leave the preamp cable connected to the

mainframe if the other end is not connected to the Remote PreAmp.

ALWAYS re-install the plastic safety cover onto the mainframe preamp con-

nector whenever the Remote PreAmp is not being used.

Turn off the Model 6430 power, then use the supplied preamp cable to connect the

Remote PreAmp MAINFRAME connector to the mainframe REMOTE PreAmp

connector.

Source-measure terminals

The Model 6430 can be used with or without the Remote PreAmp. Table 1 lists each

mainframe and equivalent PreAmp terminal. Figure 5 shows the basic input-output

configuration.

Table 1

Terminal equivalency between mainframe and Remote PreAmp

Mainframe terminal Equivalent remote PreAmp terminal

INPUT/OUTPUT HI

INPUT/OUTPUT LO

4-WIRE SENSE HI

4-WIRE SENSE LO

V,  GUARD

GUARD SENSE

Chassis ground (screw)

IN/OUT HI

IN/OUT LO

SENSE HI

N/A

GUARD (cable guard only)

N/A

N/A = Not available at Remote PreAmp.

Keithley 6430 Quick Results Guide

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