Keithley 7012-S Service Manual

SECTION
1
Performance
Verification
7.
Set
the
Model 263 to output
+O.90000nA
on the
2nA
larity and verify
that the
reading
is
within
the
limits
range, and
set
the Model
236/237
compliance
limit specified
in the
table.
to
inA
on
the lnA
measuiement
range.
10.
Using
Table
1-7
as a
guide, check the
lOnA
through
8.
Verify
that
the reading
is
within the limits
specified
lOmA measurement
ranges
of the Model
236/237.
in
the
table.
11. Place
the
Model 263
in standby.
9,
On the
Mode1263,
change
the output
to
negative
po
Note
: 263 GUARD
enabled
Figure
1-6. Setup for Low
Current
Measure
Ranges
Verification
(inA
to
lOrnA)
Table
1=6. Allowable
Reading Caiculations
for
Low
Current
Measure
Verification
(1iA
to
lOmA)
236/237
Allowable
Readmg**
Measure
Typical
Range
Reading
Calculations*
Lower
Limit
Upper
Limit
Limits***
1iA
+IO9M
±
[
(0.0004)
IO.9A +
6OpA
1 = +
.
i.LA +
.
jiA
+O.90000iiA
±87OpA
—Io.9±[(O.OOO4)Io9+6OpAJ=
—.
iiA —_.
jiA
—O.90000jiA±87OpA
lOjiA
+I9±[(O.OOO35)I9+7OOpA1=
+.__jiA
+._A
+9.0000j.tA±8nA
—I 9 A
±
[
(0.00035)
I 9 iA +
700pA
1 =
— .
iiA
— •
iA
—9.0000pA
±8nA
lOOjiA
+I9OpA
±
[
(0.00035)
I 9o
+
6flA
1 +
.
LA +
. .
ilA
+9O.OOOLA
±83nA
49OA
±
[
(0.00035)
I 9 O +
6nA
1 = —
. —
jiA —
. —
iA
—9O.OOOiA
±83nA
1mJ +IO9mA±[(O.00035)IO.9mA+6OflAj
+.
iiiA +.
IflA
+O.900001TLA±800flA
—Io.mt±[(O.OOO35)Iosmi+6OnA1
.
flLA .
iflA
0.90000fllA±800flA
lOmA
+I9mA
±
[
(0.00038)
Im +
600flA
1
+ .
iiiA
+ .
fltA
+9.0000mA
±9.4iA
—I±[(O.OOO38)I+6OOnA]=
—.mA
—.mA
—9.OOOOmA±9.4iA
*
IO9pA,
I9A, I9OiA,
IO9mA
and
I9flA
are
obtained from
Table
1-3.
**
Allowable
reading
limits
are to be
transferred
to
Table
1-7.
***
fle
calculated
allowable
readings
should be
within
the
listed
typicallimits.
These
limits
are based on
the 90-day
specifications
of the
Model 263
and 193A.
A
calculated
allowable
reading
that does
not fall
within
these
limits
indicates
a
caiculation
error, or
that the Model
263 and/or
Model
193A is
out of
specification.
LZJ
263
Source
(Source
1)
10000Boo
6ö:
LiQo
143

Keithley 7012-S Specifications

General

Brand	Keithley
Model	7012-S
Category	Measuring Instruments
Language	English