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Related Operations;
Amplitude
Fixed
Range
Amplitude
Units
Conversion
Amplitude
Units Selection
Bright-Digit Edit
Entry
Relative
Function
Step Entry
2-24.
Amplitude
Fixed
Range
The
following information describes
how
to use the
Fixed-Range
special
function.
This
special
function
fixes
the current
amplitude range
(holds the currently
selected step
of
the
Step
Attenuator). This function allows
monotonic and
nontransient
level
control over
a limited
range
around
those
levels
where
the
Step Attenuator normally autoranges. This
level
control
may
be accomplished with
the Bright-Digit Edit
Entry
only.
The
level
vernier
in
fixed
range has
at least
1
8
dB
of range
(the
specified
accuracy range
is
1
dB).
Command
Syntax:
Select
Fixed
Range
-
Enable
or
Disable
Summary:
COMMAND
NOTES
Enable Fixed Range
Local:
CSPCLD
C9:
—
C13
1
Remote: "SP"
"9"
-- "1"
Disable Fixed Range
Local:
CSPCL:
1193
tOl
2
Remote: "SP" "9"
-- "0"
Example:
Set the
Generator
for
monotonic and
nontransient amplitude control (Bright-Digit Edit
only)
over
the
range
of the vernier
level
control
below
0.25V.
Local:
[AMPLD
C.3
121 tSl
CMHzjVJ
CSPCL3
191
Cl]
Remote: "AP.25V^
SP91
Notes:
1
The
amplitude range
is
fixed
only
for Bright-Digit Edit operations.
Other
methods
of
changing
the
amplitude cause
the step attenuator
to
autorange
if
necessary.
2.
With
amplitude
fixed
range
disabled,
amplitude ranging occurs
at
1 /
2V,
1
/
4V,
1
/
8V,
...
!/2'^V with
AM
off
and
1/4V, 1/8V,
1/16V,... 1/2^'V
with
AM
on.
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