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Routine Operation
3-23
SCM4000
Operator’s Guide/Tech Ref Manual
16.
Press the Up, Down, Left, or Right arrow keys, as
required, to change the
SR:
setting to the value
required. The
SR:
setting value range is from 0.0 to
20.2 MS/s.
17.
Press the
SEL
key and observe the
!
cursor changes
to a
>
cursor.
18.
Press the
ESC
key repeatedly until the Main Screen is
displayed.
Note
Changes to Presets are not automatically saved.
Changes to Preset settings will be lost if the Preset
is recalled before Preset setting changes have
been saved.
To save Preset setting changes, go to step 19. To
recall Symbol Rate Preset settings established
prior to performing this procedure without saving
the latest changes, go to step 20.
19.
To save Preset setting changes, perform
. Procedure is complete.
20.
To recall Preset settings without saving the latest
changes, perform
“Recall Preset Settings” on page 3-
.
3.6.2
Monitor/Change Modulation Type
The procedure required to monitor and/or change the modulation
type to
QPSK
,
16QAM
,
32QAM
or
64QAM
is contained in the
following steps.
1.
Verify the SCM4000 is powered up.
2.
Verify the Main Screen is displayed.
If the Main Screen is not displayed, press the
ESC
key
repeatedly until the Main Screen is displayed.
Figure 3-29: Main Screen Menu - Typical
3.
Press the Down arrow key, as required, to move the
>>
cursor to the
System Menu
option.
4.
Press the
SEL
key or Right arrow key and observe the
System Menu
Figure 3-30: System Menu - Typical
5.
Press the Up or Down arrow keys, as required, to
move the
>>
cursor to the
Preset Menu
option.
6.
Press the
SEL
or Right arrow key to select the
Preset
Menu
option.
Note
“
X
” indicated in the
Preset Menu
in the following
steps represents Presets
1
thru
9
. “
Preset #X
”
represents the Preset name.
7.
Observe the
Preset Menu
is displayed.
SCM4000
>> Modulator
System Menu
System Menu
>> Preset Menu
Active Errors
Error Log
Содержание SCM4000
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