Microwave Radio Communications SCM4000, Technical Reference Manual

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Routine Operation 3-70 SCM4000 Operator’s Guide/Tech Ref Manual
Figure 3-180: Modulator Menu - Typical
14. Press the Up or Down arrow keys, as required, to
move the cursor to the
IF Lvl: option. See Figure 3-
181 .
Figure 3-181: IF Level Menu - Typical
15. Press the SEL key or Right arrow key to select the IF
Lvl: option and observe the > cursor changes to a !
cursor.
Note The IF Level is a system parameter that is
optimized for system performance. Generally,
-10dBm is standard for most system
configurations.
16. Press the Up, Down, Left, and Right arrow keys, as
required, to select the IF Level desired. IF level values
are from -5 to -15dBm.
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.
Modulator
> SR: 20.0MS/s
Mod Type: 16QAM
Data Ch1:
Modulator
SpectInv: Off
> IF Lvl: -6.4dBm
CW Tone: Off
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 IF level Preset settings established prior to
performing this procedure without saving the latest
changes, go to step 20.
19. To save Preset setting changes, perform “Save Preset
Settings” on page 3-154 . Procedure is complete.
20. To recall Preset settings without saving the latest
changes, perform
“Recall Preset Settings” on page 3-
155 .
3.6.25 Monitor/Change Spectrum Inverter State
The procedure required to monitor and/or change the Spectrum
Inverter state to
On or Off is contained in the following steps.
1. Verify the SCM4000 is powered up.
2. Verify the Main Screen is displayed. See Figure 3-
182 . If the Main Screen is not displayed, press the
ESC key repeatedly until the Main Screen is
displayed.
Figure 3-182: Main Screen Menu - Typical
SCM4000
>> Modulator
System Menu