Post Installation Checks; Start-Up And Operation; Initial Startup; Normal Indications - GE MDS 4790 Series Installation & Operation Manual

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4.7 Post Installation Checks

Before applying power to the radio, verify that:
1. All connections are properly wired and secure.
2. The input voltage matches that of the installed power supply.
3. Antenna heading is preset in the direction of the associated station.
This completes the radio installation.
OPERATION describes the radio's indicators and provides initial startup
procedures.

5.0 START-UP AND OPERATION

The radio is designed for continuous, unattended operation. Under
normal conditions, the only time operator intervention is required is to
power the unit up or down, or to change an operating parameter. This
section explains the use of the radio's indicators and provides steps for
initial startup of the equipment.

5.1 Initial Startup

NOTE: The radio is normally continuously keyed, and transmits when
the power is switched on. Ensure there is a suitable load on the
antenna connector before switching the power on.
Operation of the radio can be started by simply connecting primary
power to the unit and setting the rear panel

Normal Indications

When power is first applied, the following events occur in a normally
working unit:
• All front panel indicators light briefly and a beep is emitted
• The front panel display shows the start-up screen, similar to
Figure 26 on Page 29
• The
ACTIVE LED
master station configured for redundant operation, the
LED also lights for the stand-by unit.

Maximizing RSSI

Since the master station almost always uses an omni-directional
antenna, maximizing signal strength is done at the remote sites where
directional antennas are typically used. An RSSI stronger than -90 dBm
is desirable.
MDS 4790/9790 Series I/O Guide
Section 5.0, START-UP AND
POWER
for the selected transceiver board lights. In a
MDS 05-3438A01, Rev. F
switch to .
ON
STBY