MDS 05-3628A01, Rev. B
MDS 4790M (MPT 1411) I/O Guide
21
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
POWER
switch to
ON
.
Normal Indications
When power is first applied, the following events occur in a normally working unit:
• All indicators light briefly and a beep is emitted
• The front panel display shows the start-up screen, similar to Figure 19
• The
ACTIVE
LED for the selected transceiver board lights. (In a
master station configured for redundant operation, the
STBY
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 greater than -90 dBm is desirable.
5.2 Front Panel Indicators
Refer to Figure 17 and the following text for an explanation of the front panel
indicators. The control buttons are described in Section 6.4,
Configuration and
Programming using the Front Panel
, beginning on page 44.
Invisible place holder
Figure 17. Front Panel Controls and Indicators
