Bird Technologies 429-83H-01 Series-Manual - Manual (Page 26)

TX RX Systems Inc. Manual 7-9439-6 09/03/09 Page 18
-30
-35
-40
-45
-50
-55
-60
-65
-70
-75
-80
dBm
Receive Band
Less than -35 dBm
Transmit Band
Less than -55 dBm
Remaining Spectrum
Less than -75 dBm
Transmit Band Receive Band
Frequency (MHz)
Maximum Signal Level Mask
Figure 16: Maximum permissible signal levels at receiver output of TTA MCU.
MCU
Front
Panel
Test
Port
Tower Top Box
Lightning Arrester
TX RX part no. 8-21550
CAT-5e
Cable
Test Ant
Antenna
Main
Spectrum Analyzer
Bird SignalHawk
Figure 15: Testing the output spectrum of the TTA system.