EasyReach
User Manual
INSTALLATION AND COMMISSIONING
1H90941
13
Antenna Alignment
WARNING
RF RADIATION
RF ENERGY AT MICROWAVE FREQUENCIES IS PRESENT WITH THIS
EQUIPMENT. PERSONNEL SHOULD NOT BE EXPOSED TO HIGH RF
ENERGIES, AND SHOULD NOT TO BE IN FRONT OF THE ANTENNA WHEN
THE EQUIPMENT IS SWITCHED ON.
The following procedure allows antenna alignment to be performed by one
person.
To correctly align the antenna(s), perform the following steps:
•
Ensure both sites are set up according to Figure 1 (see page 4).
•
Switch both units on and set up according to the initialisation procedure
detailed on page 11.
•
Ensure that the antennas at both sites are pointing to within ±6 degrees of
the other site in both the vertical and horizontal planes (within the 3 dB
antenna beamwidth).
•
Run a pair of wires from the unit to the antenna. Connect the wires to pins
5 and 6 of the alarm port mating connector supplied (see Table 7) and plug
the connector into the
ALARM
port at the rear of the unit. Connect a
voltmeter to these wires at the antenna end.
•
The antenna can now be accurately aligned by slowly panning it to the
point where the peak voltage value is obtained on the voltmeter, then
slowly tilting it to obtain the highest value possible. Once the maximum
signal level is obtained, secure the antenna, waterproof the connections,
and disconnect the voltmeter and wire pair.
•
Perform the antenna alignment at the other site.
•
The
DATA
and
RF SIGNAL
indicator LEDs should both be green at the
units at both sites.
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