HP 3457A Service Manual page 13
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General Information
3457A
Table 1-1. Specifications
@
DC CURRENT
(Cont'd)
90 DAY: Tcal
+ 5°C
After one hour warm-up.
RANGE
| % READING
NUMBER
OF
COUNTS
100
PLC*
10 PLC*
Vv PLe®
«1
PLC*
005
PLC*
~0005
PLC*
6 1/2 digits]6 1/2 digits|]6 1/2 digits|5 1/2 digits|4 1/2 digits|3 1/2 digits
104
104
11S
14
104
104
115
14
104
104
115
14
204
204
215
24
604
604
615
64
1 YEAR: Teal + 5°C
After one hour warm-up.
RANGE
|% READING
NUMBER OF COUNTS
100 PLC
10 PLC*
1 PLC
+1 PLc*
+005 PLC*
+0005 PLC*
6 1/2
digits|6
1/2
digits|6
1/2
digits|5
1/2
digits|4
1/2
digits|3
1/2
digits
0.04
104
104
115
14
0.04
104
104
115
14
0.04
104
104
115
14
0.08
204
204
215
24
0.08
604
604
615
64
PLC
=
Integration
Time
in Power
Line
Cycles.
When
using
integration
times
of
100
PLC,
10 PLC,
or
1PLC;
multiply
Number
of
Counts
in
the
Measurement
Accuracy
Tables
by 0.1
for
5 1/2
digit
readings,
0.01
for
4 1/2
digit
readings
and
0.001
for
3 1/2
digit
readings.
Tcal
=
the
temperature
of
the
environment
where
the
3457A
was
calibrated.
Calibration
should
be performed
with
the
environment
temperature
between
18
and
28
degrees
centigrade.
TEMPERATURE
COEFFICIENT:
+(%
of
Reading
+ Number
of
Counts)/°C
6 1/2 Digits Displayed
RANGE | Auto-Zero ON
Auto-Zero OFF*
300
uA
002
+ 20
-002
+ 30
3 mA
-002
+
20
-002
+ 30
30 mA
002
+
20
-002
+
30
300
mA
007
+ 20
-007
+ 30
1A
007
+ 20
007
+ 30
* Specifications given are for a stable environment (+ 1°C) and over a ten minute period.
Multiply Number of Counts by 0.1 for 5 1/2 digit readings, 0.01 for 4 1/2 digit
readings and 0.001 for 3 1/2 digit readings.
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