HP 3457A Service Manual page 27
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Also See for 3457A:
- Service manual (182 pages) ,
- Operating instructions manual (363 pages) ,
- Service manual (6 pages)
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General Information
3457A
TRUE RMS AC CURRENT
(Cont'd)
TEMPERATURE COEFFICIENT
- DC COUPLED: All Ranges.
FREQUENCY
PERCENT
NUMBER
OF
COUNTS
READING
|6 1/2 digits |5 V2 digits |4 1/2 digits |3 1/2 digits
20n2-100KH: | 0.017
|
1500
|
150
15
|
ts
MAXIMUM READING RATES:
(Readings/Second)
INTEGRATION | DIGITS
READING RATE
TIME
DISPLAYED
|* AC SLOW RESPONSE
|* AC FAST RESPONSE
60
Hz
50
Hz
60
Hz
50
Hz
0.0005 PLC
1/2
f
ja
B.5:
0.005
PLC
172
.
.
9.5
0.1
PLC
V2
s
*
9.25
1 PLC
1/2
.
.
7.25
10 PLC
VW/2
.
65
2.0
100
PLC
1/2
.
17
0.25
Reading Rates apply with Auto-zero ON, fixed range and preprogrammed settling times.
* ACBAND
set
to
< 400
for
AC
slow
response
and
set
to
> 400
for
AC
fast
response.
FREQUENCY AND PERIOD
Measures
the frequency or period of the ac component of ac or de coupled voltage or current.
The
counter
uses
a reciprocal
counting
technique
to
provide
constant
resolution
independent
of
the input frequency.
INPUT
IMPEDANCE:
1 megohm
shunted
by
< 90 picofarads.
MAXIMUM INPUTS:
Voltage:
Input
Terminals
- +
450V peak.
HI or LO to Earth Ground - + 450V peak.
Current:
1.5 amps from 250 volt source. Input is fuse protected.
FREQUENCY RANGE:
Voltage Function
- 10Hz to 1.5MHz
Current
Function
-
10Hz
to
100KHz
PERIOD RANGE:
Voltage
Function
-
100msec
to
667nsec
Current
Function
-
100msec
to
10usec
1-20
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