Keithley 6430 Instruction Manual page 43

Figure 1-4
Triax
connectors
IN/OUT HIGH Triax Connector
Preamp connector:
MAINFRAME
Triax connectors:
CAUTION
IN/OUT HIGH
SENSE
NOTE
The diagram on the Remote PreAmp (Figure 1-3) shows the maximum allowable voltage
differentials between the various terminals. Exceeding the voltage differentials could damage
the SourceMeter and create a shock hazard.
CAUTION
HI
(Input/Output High)
GUARD
(Cable Guard)
LO
(Input/Output Low)
Connect the Remote PreAmp to the mainframe using the supplied preamp cable.
When using the Remote PreAmp, DO NOT use the INPUT/OUTPUT HI
and 4-WIRE SENSE HI banana jacks on the mainframe. Using these
source-measure banana jacks will result in errors and/or noise, and possi-
ble damage to the Remote PreAmp.
HI Center conductor – Input/Output HI
Guard Inner shell – Driven cable guard for guarded measurements
LO Outer shell – Input/Output LO
HI Center conductor – 4-wire Sense HI
Guard Inner shell – Driven cable guard for guarded measurements
LO Outer shell – Input/Output LO
Cable guard is always available on the Guard terminals of IN/OUT HIGH and
SENSE regardless of the guard mode setting. Ohms guard can only be accessed at
the V, Ω GUARD banana jack on the mainframe.
Instrument damage caused by excessive voltage differentials is not covered
by the warranty.
Getting Started
HI
(4-Wire Sense High)
GUARD
(Cable Guard)
LO
(Input/Output Low)
SENSE Triax Connector
1-11