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FREQUENCY STANDARD
Type:
Frequency:
Ageing
Rate:
Warm-Up
Time:
Temperature
Stability:
Alternative Standard:
External
Frequency Standard
Input:
Racal-Dana
Type 9442:-
5
MHz.
9
+
3
parts
in
10
per
day
after
3
months
continuous operation.
Better
than
+
2
part
in
10^
within 6 minutes from
cold
.
Better
than
+
3
parts
in
10^
per
°C
over
the
range
-10°C
to
+4 5°C.
See Optional
Accessories.
Frequency:
Minimum
Level
:
Maximum
Level:
Input
Impedance:
SPECTRAL PURITY
Harmonics:
Sub-Harmonically
Related
Signals:
Discrete Spurious:
1
MHz.
100
mV
r.m.s.
10V
r.m.s.,
100V
d.c.
Approximately
1
kQ
(a.c. coupled).
At
least
30
dB below
carrier
for
frequencies
between
5
and 520
MHz.
At
least
20 dB below
carrier
for
frequencies
between
1
.5
and
5
MHz
(9082
only).
More
than
40 dB below
carrier:
typically
55 dB below
carrier.
Bands
2-5:- At
least
-70
dB
at
20
kHz
or
more
off
carrier.
Band
1
At
least
-70
dB
at
20
kHz
or
more
off
carrier
in
the
frequency range 5
to
120
MHz
for
carrier
frequencies from
5-35
MHz.
At
least
-50 dB
at
20
kHz
or
more
off
carrier for
carrier
frequencies from
1.5
to
5
MHz
(9082
only).
9081
&
9082 Vol
.
2
Tech. Spec.
(2)
.
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