User Manual

Exalt Communications, Inc.
Exalt i-Series Installation and Management Guide
5000001 25
2007-06-25
Detailed performance measurements are usually not required for pre-installation, but can
be easily performed at this stage and may be helpful for later troubleshooting efforts or
for internal records. During troubleshooting, there may often be a point at which a back-
to-back bench test should be performed to verify many or all of the above items, and in
the case of a suspected faulty device, to help confirm the fault and determine which end
of the system is at fault and in need of repair or replacement.
Note: See Back-to-back Bench Testing on page 104 for detailed
instructions.
RF Output Power Setting
The maximum RF output power is bounded by one of the following criteria:
• Maximum RF output power setting capability of the radio device
• Maximum RF output power allowed/authorized by the local government regulations
and for this specific device
• Maximum effective isotropic radiated power (EIRP) of the transmission system
allowed/authorized by the local government regulations and for this specific device
• Desired RSL to not exceed the maximum RSL allowed by the device
• Desired RSL to minimize/eliminate interference into neighboring systems
Note: In many cases the radio must be pre-configured for legal
maximum output power before connecting to the antenna and transmission
system. Instructions for adjusting the output power can also be found in
System Configuration Page on page 64.
The following information on how to set the proper power for each country is based on
the pertains to specific regulatory requirements based on up-to-date information for
countries where these radios are authorized is in Appendix A. A list of recommended
antennas is liste
d in Antenna/Transmission System on page 45.
Time Division Duplex (TDD) Factors
The i-Series radios are very dynamic, allowing the installer to optimize and control the
performance of the radio system for the intended application. The following parameters
must be carefully determined during the link engineering phase:
• Link distance
• Bandwidth
• TDD frame size
• Mode (modulation)
The setting of the above parameters determines the following performance factors: