Philips PM2521 Service Manual page 152

4
Temperature
coefficient
Common
Mode
Rejection Ratio
(CMRR)
AC
detector
Crest factor
Response time
Relative
reference
setting
Maximum
input
voltages
2.1.9.
Counter measurements
(Hz)
Ranges
Range
selection
Resolution
Number
of representation
units
Accuracy
for counter measurements
Gate time
Conversion
rate
Trigger
mode
Counter
sensitivity
0.02
dB/oc
Signals
Impedance
0
V-
1.8
V
20 MS2//60 pF
1.8
V-
18
V
1 1
M£2//85 pF
18
V-600 V
10
MW/95
pF
100
dB
for
dc
signals
80
dB
ac
signals
50 Hz
or
60 Hz
±
1
%
RMS
convertor, ac
coupled
2
at
range
end
3s
With pushbutton
ZERO
SET
at
the front of the
PM
2521
In
all
ranges;
Between
Hi
and
Lo
Between
Hi and
earth
Between Lo and
earth
Maximum
dc
voltage
Maximum VHz
product
600
V
rms
1000
V
rms
400
V
rms
400
V
10
^
kHz
10 100
MHz
1
10
Range 100 kHz,
1
MHz
and 10
MHz;
Manual
or automatic
Range 10 kHz; Manual
only
0.1
Hz
in
range 10
kHz
99999
Range
Accuracy
10
kHz
100 kHz
1
MHz
±
(0.005
%
of reading +0.001
%
of
range)
10
MHz
±
(0.01
%
of reading +0.001
%
of range)
Range
Gate
time
10
kHz
10
s
100
kHz
1 s
1
MHz
100 ms
10
MHz
10 ms
Range
Rate
10
kHz
1
conv./IO
s
100
kHz
1
MHz
10
MHz
1
conv./s
On
positive going
crossings of the
+
trigger
level
On
negative
going
crossings of the
-
trigger level
DCtolMHz
150
mV
peak
1
MHz
to 10
MHz
300
mV
peak
Resolution
1
mV
With thumbwheel
at
the front of the
PM
2521
Trigger
level
adjustment