Keithley 263

OPERATION
MODEL 263
FEEDBACK PICOAMMETER
~_______________________
; PREAMP
I
OUTPUT ’ i INPUT
GUARD DISABLED
Figure 3-14. Sourcing Amps to a Feedback Picoammeter
SHUNT PICOAMMETER
,__-__-_______.
(MODELS 602,)
.-__- ____ ----,
I
t------------
I
I
I
MODEL 263
BANANA CABLE
(GUARD ENABLED,
Figure 3-15. Sourcing Guarded Amps to a Shunt Picoammeter Using an Input Adapter
3-17