Preparing Fora; Received Signall; Lignment; Evel (Rsl) Measurements - DragonWave Horizon COMPACT Plus Product Manual

10.0 Preparing for Alignment
The Horizon Compact Plus and antenna assembly is attached to the mounting post, or tower, with a
specialized mounting bracket that allows fine orientation adjustment of the Horizon/antenna assembly.
The same mounting bracket is used for all antenna sizes.
Visual alignment is achieved by rotating the assembly on the post, or tower, and positioning the assembly
so that the antenna is visually aligned with the target system before tightening the mounting bracket
clamp. Final alignment is achieved using the azimuth and elevation adjustment bolts. Once alignment is
achieved, the adjustment mechanisms are locked in place with lock nuts.
Lock nuts

Figure 10-1 Mounting bracket with fine adjustment bolts

Final alignment is achieved by monitoring the received signal level (RSL) values as the system is
adjusted for azimuth and elevation. The BNC Field Strength Monitor connection is used in conjunction
with a voltmeter for RSL monitoring. See Section 10.1. Adjustments are made until the RSL value is at a
maximum, which should be within ± 3 dB of the expected value (link budget figure).
10.1 Received Signal Level (RSL) Measurements
To accurately align the Horizon Compact Plus to its far end peer, you need to monitor the received signal
level (RSL). There are two recommended methods for monitoring RSL. These are:
1. Use the CLI command set alignment on to activate the alignment feature at the BNC
connector located on the side of the unit. Connect a voltmeter to the BNC connector. The
voltage at this connector is linearly related to RSL and is 1 mV per dB e.g. -45 mV = -45 dB.
Note that the centre connection on the BNC connector is positive, so to read negative values
(to correlate with the negative RSL values) connect the negative pole of the voltmeter to the
centre connection.
Horizon Compact Plus Release 1.0.1
Elevation adjustment
Wireless Ethernet Product User Manual – Volume 1
Azimuth adjustment
Mounting clamp nuts
Mounting clamp