General Instrument C6M-II, Руководство по установке

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Overview 2-11
C6M-II Installation Manual
Main Menu Item Appearance Description
Remote Menu Provides access to the remote menu when the option
is installed. NA means not available.
Option Menu
To access the Option menu, display OPT MENU on the Main menu. To reach any item on the
menu, use the up or down arrow key. The following table describes each item on the Option
menu.
Table 2-5
Description of Option menu items
Option Menu Item Appearance Description
RF Squelch Allows RF output to be turned on or off. The right
arrow key causes the item (e.g., ON) to flash. The up
arrow key toggles between ON and OFF. Pressing
ENT
implements the choice. This menu item is mainly
for testing, and should always be ON for normal
operation.
Tuning Mode Selects the frequency plan. The choices are IRC,
HRC, STD, FRQ, and EIA. The right arrow key
causes the choice (e.g., STD) to flash. The up or
down arrow key pages through the flashing choices
(IRC, HRC, STD, FRQ, EIA). The
ENT
key implements
the choice. If FRQ is chosen, the RF output frequency
appears and the desired frequency must be entered by
using the up or down arrow key. For any other choice
(e.g., STD) the channel number flashes. The channel
number must then be entered by using the up or down
arrow key. After selecting the channel number, press
ENT
to implement the choice. When the change is
made, the system automatically exits to the Main
menu.
Bar Graph Display Indicates whether the LED bar graph is being used to
display video depth of modulation or audio deviation.
The right arrow key causes the item to flash, and the
up or down arrow key toggles between VID (video
modulation) and AUD (audio deviation). Pressing
ENT
implements the choice.
Automatic Gain
Control (IF AGC) Toggles IF AGC between ON (IAGC ON) and OFF
(IAGC OFF) For normal operation, it should be on.
Manual Gain Control
(IF MGC) If IF AGC is turned off, MGC is available.