Philips pm2521 - Page 151

3
2.1.4.
Alternating
current
measurements
Ranges
Maximum
input
current in
range 20
A
Resolution
Number of
representation
units
Accuracy
(valid
between 3 %
and
100 %
of
range)
Temperature
coefficient
Voltage
drop
over
shunt
AC
detector
Crest
factor
Response
time
Protection
Maximum
Common
Mode
voltage
Maximum
input
voltage
fiA
2 20
200
mA
2
20 200
A
2 20
10
A
1
nA
in
range
2
iiA
Measured
value
less
than 0.5 %
of
range is
displayed
as
zero
2100
40
Hz
-
200
Hz ± (0.4 %
of reading
+0.15
%
of
range)
+
(0.03
%
of
reading /°C
+
0.01
of range
/°C)
Range
Voltage
drop
Frequency
2
iuA
20 mA
200
pA
2
mA
< 2.5
mV
50
Hz
20
mA
200
mA
< 25
mV
2
A
20
A
< 250 mV
RMS
convertor, ac
coupled
2
at
range
end
1
s
without
ranging
3 s
including
ranging
Range
2
ijlA-20
mA; 250
V
rms
Range 200
mA
-
20
A are
not
protected
Imax.
=
20
A for 20
seconds
400
V
rms, 560
V
peak
In all
ranges;
Between
Hi
and Lo
250
V
rms
Between
Hi
and
earth 400
V
rms
Between Lo
and
earth 400 V
rms
2.1.5.
dB
measurements
(valid in
function V~
rms)
Range
0
dB
reference
Resolution
Number
of
representation
units
Accuracy
-57,7 dB .
. . +57,7
dB
1
mW
in 600
L2, 0.775 V
or
when
selecting
the
relative
reference
function
with
pushbutton
ZERO
SET at
the
front
of
the PM
2521
0.1
dB
Measured
value less than
-57.7
dB is
displayed
as
-99.9
dB
999
Signals
Frequency
Accuracy
-31,7
dB ...
+47 dB
40
Hz-
20kHz
20
kHz
-
100
kHz
± 0.2
dB
±
1
dB
-50
dB...-31,7dB
40
Hz-
20kHz
+
2
dB
-57,7
dB
...
-50
dB
40
Hz
-
20
kHz
±3
dB
>
+47 dB
40
Hz
-
500
Hz
± 1,5dB