User's Manual

Table Of Contents
Exalt Installation and Management Guide
ExtendAir G2 24GHz Digital Microwave Radios
20 209866-002
2015-09-09
connector. Use a connector cover or other temporary measures to ensure that the connector is kept clear.
Take extra care if the antenna is installed during inclement weather to ensure that no moisture gets inside
the antenna connector at any time.
Now the antenna can be aimed in the general direction required for the link. Use a compass, a reference
bearing, binoculars or any other similar device to point the antenna in the direction (generally) of the
far end radio, and then slightly tighten the azimuth and elevation adjustments so that the antenna
maintains its general position and is safe to be left without additional securing. Refer to the Exalt white
paper, Antenna Alignment, for more information on antenna alignment techniques.
Antenna Alignment
Antennas must be installed at both ends of the planned link to commence precision alignment. Refer to
the Exalt white paper, Antenna Alignment.
Antennas are typically aligned using the radio hardware for precise alignment. However, there are many
very useful tools available to aid in this process, inclusive of devices specifically designed for the
purpose of aligning antennas. Some examples are:
XL Microwave Path Align-R
Teletronics 17-402
Use of these devices may be extremely advantageous as compared to using the radio, because they
employ many unique facilities to aid in this process. Using these tools also makes it possible to align
the antennas before the radio equipment is delivered. However, many installers successfully use the
radios as the means for antenna alignment.
There are two primary facilities when using the radio to align the antenna:
RSL voltage test point using a volt meter (recommended)
A voltmeter with a BNC male connector can be directly connected to the RSL connector on the
radio. The RSL test point DC voltage is inversely proportional and numerically calibrated to the
received signal level. The voltage rises as the antennas are less in alignment, and falls as antennas
are more in alignment. The voltage measurement corresponds to the received signal level in
measurements of dBm (a negative number for RSL measurements). For example, an RSL of –
60dBm yields an RSL voltage measurement of 0.60VDC; an RSL of –45dBm measures 0.45VDC.
Audio alignment buzzer
Enable the audio alignment buzzer through the Exalt GUI. When enabled, the radio enclosure
emits a sound. The pitch rises when higher (better) levels of RSL are achieved. Align the antennas
until the highest pitch is accomplished. The tone is continuous when the two ends of the radio
system are in communication. Otherwise, the buzzer beeps.
Exalt GUI RSL reading indicates the current RSL in dBm.
Note: There is a slight delay in RSL readings in the GUI as the RSL levels change. In this
case, fine alignment can be done in small adjustments allowing a small gap of time so that the
impact of the adjustment on the GUI display catches up to real time.
Note: Only use the browser-based GUI for antenna alignment if there are no other means
available. If this method is required, refer to Exalt Graphical User Interface (GUI)
. The RSL
reading can be read on a PC or any hand-held computing device that supports an HTML
browser and Ethernet connectivity.