Harris Corporation RF Communications Division XG-100LPA Manuale Utente
14221-1200-4010, Rev. B
78
17. PERFORMANCE TESTS
This section includes procedures to verify the performance of the installation’s antennas.
Procedures to Verify Multiband Antenna System:
Transmitting into a 50-Ohm RF Load/Terminator (“Dummy Load”) - Section 17.2 - This test verifies
the radio’s RF output power is satisfactory.
Transmitting into Mobile Antenna - Section 17.3 - This test verifies the radio’s multiband antenna
system is satisfactory.
Procedures to Verify Low Band Antenna System:
Transmitting into a 50-Ohm RF Load/Terminator (“Dummy Load”) - Section 17.4 - This test verifies
the LBPA’s RF output power is satisfactory.
Transmitting into Mobile Antenna - Section 17.5 - This test verifies the radio’s Low Band antenna
system is satisfactory.
If the vehicle’s engine must remain running, the vehicle location should be well
ventilated so exhaust fumes from the engine do not cause harm!
When jump-starting a vehicle equipped with a Unity mobile and Low Band Power
Amplifier remove the radio installation’s four (4) fuses from the fuse holders prior to jump-
starting. This will prevent possible damage to the Unity mobile, Low Band Power
Amplifier, or control head.
The accuracy of test results depends upon a DC power source in the range of 13.6 volts DC
10%, with a current capacity of greater than 20 amps for the 50-Watt MRU radios, and
greater than 25 amps for the 100-Watt VHF amplifier. Make sure the vehicle’s battery is
fully charged by running the engine for a few minutes before the test, and keep the engine
running during the test procedures.
Prior to installation, transmit RF output power levels should be configured appropriately.
The wide range of power levels indicated in the following procedures take into account such
things as: customer’s requirements; measurement errors, especially to include uncalibrated
equipment; cabling losses; and temperature variations. By no means should the result from
Performance Testing in this section be construed as the exact value of power level outputs
from the mobile radio equipment, as values are set and more accurately measured in the
factory. The values obtained in these test procedures determine a successful installation
only.
NOTE