Marconi Instruments 2955 - Page 6

GENERAL
INFORMATION AND DATA
|
Amplitude
modulation
Modulation section
CW
range:
1.5 to 400
MHz,
usable to
400
kHz.
Modulation
range:
0
to
70%,
usabie
to
85%.
Frequency
range:
50 Hz
to
15
kHz.
Resolution:
1%.
Indication:
2 digits.
Setting:
Keyboard entry: step change
variation
by
increment/
decrement keys and' rotary
control.
Accuracy:
±7% of
setting
±1
digit
at
I
kHz.
zzl0%
of setting
±1
digit
from 50 Hz
to
5
kHz up
to
60%
AM.
—15%
of
setting
±
digit from 50 Hz
to
15 kHz up
to
70%?
AM.
AM external
Input
Input
impedance:
1 MH
in
parallel
with approximately
40
pF.
CW range:
1.5 to
400
MKz.
Modulation
depth
range:
0 to
70%,
usable to
85%.
•
Frequency
range;
.
50 Hz to
15
kHz.
Sensitivity:
50 Hz
to
5
kPiz. up to
60% AM;-
1.5
V
p-p
for 30% -AM
±10%
±1%
AM.
50 Kz to 15
kHz. up to
70%
AM:~
1.5
V
p-p
for
30% AM ±15%
±1%
AM,
.AM
distortion:
<2% distortion at 1 kHz
with 30%
-AM
in
a 300
Hz to
3.4
kHz
bandwidth.
Frequency
modulation
CW
range:
0.4
to
1000
MHz.
Deviation
range:
0 to 25 kHz.
Modulation
frequency
range: 50 Hz to 15
kHz.
Resolution:
25
Hz
(<6.25
kHz
deviation).
100
Hz
(<25
kHz
deviation).
Indication:
4
digits.
Setting:
Keyboard entry.
Step
change
variation
by
increment/
decrement keys and
rotary
control.
1-6
46881 -622N
Apr.
88