Nautel NV7.5, Руководство по эксплуатации и обслуживанию

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NV10/NV7.5 Operations and Maintenance Manual Operating the transmitter
Issue 3.4 2016-08-03 Page 2-51
Editing or creating presets
When a presets page is opened from the menu, (for example see Figure 2.34 on page 2-50 or
Figure 2.37 on page 2-59 ), the
Current Settings
of the transmitter are displayed. They define
the current operational state of the transmitter.
Current Settings
can be edited and then
immediately activated by pressing the
Save
button.
To edit a saved preset, you must load that preset from the
Presets
page (see Loading presets on
page 2-52 ). If the edited preset was active before it was edited, saving the preset will update the
preset, but the
Current Settings
will not change. To update the operation of the transmitter, re-
activate the preset through the top banner (see Activating presets on page 2-52 ).
In the top banner (see Activating presets on page 2-52 ), an asterisk (*) appears next to the preset
name when the
Current Settings
have changed since the last preset was loaded.
Current
Settings
are not saved through an ac power cycle; when the transmitter recovers from an ac
power loss, it loads the preset that was last activated.
On the
Presets
page, an asterisk (*) appears next to the preset name in the header when there
are unsaved changes to the preset.
When changes are complete, press the
Save
button and then press the
Save Preset
window’s
Save
button to enable the changes. If you are creating a new preset, you can also enter a new
name (e.g., Preset 4 - IBOC) in the preset window before clicking the
Save
or
Save New
button.
Parameters that can be edited are discussed in detail in Understanding the preset tabs on page 2-
53 .
To remove a preset, select it and press the
Delete
button.
To ignore any changes, press
Cancel
to return to the
Presets
page.
Note:
If you change an FM+HD or HD preset, particularly its power level or frequency,
it is possible to optimize the transmitter’s performance by adjusting the HD PA
Volts value in the Mode section of the Presets screen. For additional information
see Improving transmitter performance for IBOC presets on page 4-13 of this
manual.