Agilent Technologies HP 83711A - Page 90

Options
There
are
several
electrical,
mechanical,
warranty
,
and
documentation
options
available for
the CW
Generator
.
Electrical
Options
There
are
four
electrical
options
available
for
the
CW
Generator
.
These
options
are
as
follows:
Option
1E1
-
Add
Output
Step
Attenuator
If
Option
1E1
is
ordered,
an
internal
step
attenuator
is
included
before
the
RF
OUTPUT
connector
.
The
step
attenuator
has
a
range
of
0
to
110
dB
(90
dB
for
83711A/83712A)
in
10
dB
steps
(0|110
dB
for
11B/12B).
The
correct
amount
of
attenuation
is
selected
automatically
by
the
CW
Generator
dependent
on
the
output
power
level
selected.
If
this
option
is
installed,
you
can
select
whether
or
not
the
step
attenuator
will
automatically
switch.
This
function
is
useful
during
certain
applications
,
such
as
when
external
automatic
level
control
is
used.
<
idxadd
high
stability
timebase
-
option
1E5
j
Option
1E5
-
Add
High
Stability
Timebase
If
Option
1E5
is
ordered,
the
CW
Generator
is
shipped
with
a
10
MHz
temperature
controlled
crystal
reference
oscillator
for
increased
frequency
accuracy
and
stability
.
If
Option
1E5
is
installed,
the
CW
Generator
must
be
connected
to
A
C
mains
power
to
keep
the
reference
oscillator
at
operating
temperature
.
If
the
reference
oscillator
has not
been connected
to mains
power
(the
oven
is
cold),
the
CW Generator
requires 30
minutes to
warm up
.
Option
1E8
-
1
Hz
Frequency Resolution
Consult
your
HP
sales
representative
for
details
on
availability
and
retrot
information.
4-20