Keithley 6512 Instruction Manual page 40

Operation
OFF
V, Ω GUARD
HI
V IN
LO
S
GND
HI
R X
LO
S
GND
Figure 2-14
Typical preamp out connections
2-20
PREAMP OUT
INPUT
COM
ON
MODEL 6512
V OUT = V IN
PREAMP OUT
COM
100Ω
S
VOLTS
I
V OUT = I R X
PREAMP OUT
COM
100Ω
S
OHMS
MODEL 1683
TEST LEAD KIT
A. CONNECTIONS
HI
I IN
LO
R L
S
GND
HI
Q IN
LO
R L
S
GND
B. EQUIVALENT CIRCUITS
HI
LO
MEASURING DEVICE
R F
V OUT = -I IN R F
PREAMP OUT
R L
COM
100Ω
S
AMPS
C F
V OUT = Q IN
C F
PREAMP OUT
R L
COM
100Ω
S
COULOMBS