APPENDIXF
236/237
Performance
Verification
F.5.3
Voltage Source Verification
Set
up
the
equipment
as
shown
in
Figure F-3
and
per-
form
the
following steps
to
verify the voltage source.
WARNING
The
following
procedure
uses
hazardous
voltages
(lOOOV
for
the
Model237)
that
could
cause
injury
or
death.
Exercise extreme cau-
tion
when
encountering
these
lethal
voltage
levels.
1.
Set the
Model193A
to
measure
DCV
on
the
200mV
range.
2.
While
in
standby, set the
Model236
to
source
OV
on
the
l.lV
range
and
set compliance
to
lOrnA.
3. Temporarily disconnect the
banana
cable from
BINDING
POST
2
at
the
rear
panel
panel
of
the test
fixture
and
connect
it
to
VOLTS LO
of
the
Model
193A.
This
will
short
the
input
of
the
Model
193A
DMM.
+
4.
On
theModel193A,
pressZEROtocancelanymeas-
urement
offsets.
5. Re-connect
the
banana
cable
to
BINDING
POST
2
of
the
test fixture.
6. Place
the
Model236/237
in
operate
and
verify that
the
reading
on
the
DMM
is
within
the limits
shown
in
the first
entry
of
Table
F-4. Use
the filter
if
the
reading
is noisy.
7.
Press
the
SELECI'
~
button
to select
the
11
V
range
and
verify
that
the
DMM
reading
is
within
the
allow-
able limits
in
Table
F-4.
8.
Using
Table
F-4
as
a guide, repeat step 7
to
check the
OV
output
on
the
llOV
and
llOOV
ranges.
9.
From
the
keypad,
program
the
Model236
to
source
+ 1
Von
the
1.1
V
range
and
verify
that
reading
on
the
193A
DMM
is
within
the allowable limits.
10.
Repeat step 9 for a source value of
-lV.
11.
Using
Table
F-4
as
a guide, check source values of
±lOV,
±lOOV
and
for the Model237,
±lOOOV.
12.
Program
the
Model 236/237
to
OV
and
place
it
in
standby.
Table
F-4. Voltage
Source
Verification
236/237 236/237
Allowable
Reading
on
Model193A
Source Value*
Source
Range
193ARange
(18°C to 28°C)
ov
l.lV
200mV
-0.650mV
to
+0.650mV
ov
llV
200mV
-2.400mV to
+2.400mV
ov
nov
200mV
-24.000m V
to
+24.000mV
ov
llOOV 2V
-0.240V
to
+0.240V
+lV
l.lV
2V
+0.99902V
to
+1.00098V
-lV
l.lV
2V
-0.99902V
to
-1.00098V
+lOV
nv
20V
+9.9943V to
+10.0057V
-lOV
nv
20V
-9.9943V to
-10.0057V
+lOOV
nov
200V
+99.943V to
+100.057V
-lOOV
nov
200V
-99.943V
to
-100.057V
+lOOOV
noov
lOOOV
+999.36V
to
+1000.64V
-lOOOV
noov
lOOOV
-999.36V
to
-1000.64V
*Current compliance
is
set
to
lOrnA.
F-8
+