Keithley 237

Source
Measure
Units
#1
#2
Ro
ws
1
2 3 4 5 6 7 8 9
10
11
12
A
B
c
D
E
F
G
+
Test
Fixture
SECTION2
Operation
NOTE
:
Do
not
connect
guards
to the
OUT
or
short
them
together.
If
guarding
the
inner
panel,
only
connect
one
guard
line
to
H.
Inner
Panel
I
WAR.::G :
Test
fixture
chassis
must
be
connected to a
safety
earth
ground.
Columns
1
2 3 4 5 6 7 8 9
10
11
12
H
~~~~~~~~-r-r-r~-+~~-+-H~Mr~~-r-r-r-r-r-+-H
~--~\r-------------------~
7072
MATRIX
CARD
C:
-<<] -
Triax to banana
plug
Modification (see Figure 2-21)
X
=
Crosspoints
closed
to
apply
Vos
to
OUT
#1
• a
Crosspoints
closed
to
bias
gate
of
OUT
#1
Crosspoint Switching
for
Rows
G -
H,
Columns
1
- 12
Figure 2-24. Multi Unit Test System Using Model7072's
+
7072
MATRIX
CARD
Crosspoint Switching
for
Rows
A-
F,
Columns
1
- 12
CAUTION
:
To
prevent
damage
to
swttching
catds,
do
not
switch
more
than
200V
or
500mA.
Also,
incorrect crosspoint
closures
will
short
various
signal
or
guard
lines
and
may
cause
Instrument
or
OUT
failure.
2-29