Keithley 199

PRINCIPLES OF OPERATION
r
“L
I
Front Panel
I
, Vi2 Ref HI
RFEF
0
I . . .
, HI I I
I 4Term I
I -
I O
, corm. ,
I
Rx
1 Se:: Hi
, Only ,
I I
RF3
I I
0
I..
I- - - J sense ;
I O
Vi2
LO
1 sense LO
t
RS
t
I
input I
Lo I
J
R, =
bet . pm sense HI - vn sense LO)
Vi2 Ref HI - V.Q Ref LO
Figure 5-2. Input Configuration During 2 and 4-Terminal Resistance Measurement
5-4