User Manual

MM102225V1, Rev. B
46
6.2 ANALOG PERFORMANCE TESTING OF TOWER TOP
AMPLIFIERS
This single channel measurement is performed using external antenna coupling between
the transmit and receive antennas to deliver a test signal to the TTA. A SINAD System
level test is performed with the TTA "On" and "Off" to measure the receive system
improvement provided by the TTA. This is a relative measurement the difference
between the "On" and "Off" measured value represents the system improvement provided
by the TTA. Log the results on the site Test Data Form.
Required Test Equipment
:
• PC running suitable console application
• Cisco “Black” cable
• Cisco RJ45 to DB9 (F) adapter
• HP 8920 Communications Analyzer
• 30 dB Coupler
6.2.1
Tower Top Amplifier Performance Test
Objective: The 12dB SINAD test is performed to give a relative indication of the
receive system improvement provided by the TTA by measuring the effective receive
sensitivity and signal noise ratio of any assigned site receive channel.