User's Manual
Table Of Contents
- Installation Manual
- Contents
- Introduction
- Site Requirements
- Indoor Installation
- Tools Required for Indoor Installation
- Indoor Equipment
- Indoor Accessories
- Baseband Unit
- Traffic Interface Unit
- Mounting the Indoor Unit
- Grounding the Indoor Unit
- Installing the Cables for the Indoor Unit
- Outdoor Installation
- Tools Required for Outdoor Installation
- Outdoor Equipment
- Choosing Vertical or Horizontal Polarization
- Integrating Antenna Unit and Radio Frequency Unit
- Choosing Left or Right Side Antenna Mounting
- Fastening the Mast Mounting Bracket
- Mounting the Integrated Antenna/Radio Frequency Unit
- Grounding the Antenna/Radio Frequency Unit
- Outdoor Radio Cable Installation
- Start-up and Configuration
- Antenna Alignment
- Installation Verification and Test
- Index
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When aligning the antennas, the AGC port on the RFU (BNC
connector) is used to indicate the Received Signal Level (RSL).
Use a standard multimeter with a BNC adapter to measure the
AGC voltage. The AGC voltage is somewhere in the range 0–5V
DC.
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The alignment procedure should be performed for one
antenna at a time. If the initial alignment error is large,
however, you may need to begin by moving both
antennas to achieve contact.
1. Connect the voltmeter to the AGC port on the RFU.
The voltmeter will always show a value of at least 0.5V if the
radio terminal is working correctly.
If the antenna is receiving an unknown signal, or a signal from
a radio terminal which has the wrong security code, the
voltmeter will show an oscillating value.
2. Maximize the voltmeter value by using the azimuth and
elevation screws to adjust the antenna. The maximum
possible adjustment is ±20 degrees in both azimuth and
elevation.
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If the alignment error is more than approximately 4
degrees, there is a risk that the maximum AGC
voltage that you have found is for a side lobe. The
maximum value of the AGC voltage is lower for a side
lobe than for the main lobe.