MDS 05-3628A01, Rev. B
MDS 4790M (MPT 1411) I/O Guide
53
GROUP 1—MAIN SCREENS
Start-up Screen
When the radio is first powered on, or after a period of time has elapsed after the
last button press, the front panel display shows the start-up screen. The start-up
screen displays the product model number, as well as the owner’s name and
message. (Typically, customers use the owner name and message fields to display
the system and site name.)
The screen dims after a period of time has elapsed without any activity; brightness
can be restored by pressing any button.
To change what is displayed on this screen, see “Set Owner Name” on page 59
and “Set Owner Message” on page 60.
Press ENTER, or the up or down arrow button, to display the Menu Directory screen.
Menu Directory
This screen is used to access three screen display cycles:
Configuration,
Diagnostics,
and
Event Log
. The selection arrow (
->
) points to the currently
selected menu.
Press the up/down arrow buttons to move the arrow to the desired menu, then press
the right/left arrow buttons to display each of that menu’s screens in succession.
GROUP 2—CONFIGURATION
Access Level
This screen is used to set the front panel display to configuration mode by selecting
a level of access. There are two levels:
NONE—This is the default setting upon power-up (“safe” mode). All radio set-
tings can be viewed, the access level can be changed, and the front panel dis-
play brightness and contrast can be changed. All other settings are for display
only, and cannot be changed.
USER—Changes can be made to any radio parameter (“configuration” mode).
To select the
USER
access level, press ENTER, press the down arrow button to
display the word “User,” then press ENTER again to make the change.
The radio returns automatically to safe mode (access level:
NONE
) after a period of
time has elapsed without a button press, or if the radio is powered off and then on.
Transmit
Frequency
This screen is used to display or set the transmitter frequency. Normally, the radio
will be shipped to the customer programmed with the customer-specified
frequency. If the operating frequency was not specified when the radio was
ordered, the TX frequency is set to the center of the radio’s operating band. The
range of frequencies for the model are given Section 2.6,
Model Number Codes
,
beginning on page 6.
To change this value, press ENTER, then use the left/right arrow buttons to select
a digit. Then use the up/down arrow buttons to increase or decrease the number.
Press ENTER to make the change.
If the operating frequency is changed more than 5 MHz from the factory setting, the
helical filters must be re-tuned. If the radio is equipped with a duplexer, and the
frequency is changed more than 100 kHz, the duplexer must be re-tuned or
replaced.
MDS 4790M MAS Radio
OWNERS NAME
OWNERS MESSAGE
MDS 4790M MAS Radio
->Configuration
Diagnostics
Event Log
Set Access Level
User
Transmit Frequency
400.00000 MHz
TX [xxxx] command, page 43
