Racal Instruments 9081 Maintenance Manual page 127

Synthesized signal generators
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PREFACE
This
manual
has
been
amended
for
use
on
the
Avionics
Signal
Generator
Model 9082C. Where
the Information
contained
is
relevant
ONLY
to
the
9082C,
such pages
are identified
by
the
reference
'9082C Vol.2
1
In
the
bottom
left
hand
corner.
All
remaining
text
is
applicable
to
all
instruments
.
The Avionics
Signal
Generator
9082C
has
improved
AM
sensitivity
and
better
AM
depth
stability
with
carrier-level
change.
An
improved
vernier control of
output
level
attenuation has
been
incorporated, comprising
an eleven-times-l dB-step
attenuator (ungraduated)
with
a
concentrically-mounted potentiometer
of
approximately
1
dB.
This
vernier provides
a
continuously variable attenuation range
of 12
dB
(+3
dB
to
-9 dB
with reference
to
the
Output
Level switch
position),
giving
a
total
instrument attenuation range
of
+3
dBm
to
-129 dBm.
9082C
Vol.2

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