Sony DWM02/14 Product Information page 43

Booster gain setting conditions
BNC cables used with UHF antennas should have low losses. To obtain the proper diversity effect, the cables
should in principle be kept as short and large-gauge as possible, and should have the same length. If BNC
cables need to be run over long distances, you should use an antenna booster to compensate for cable
transmission losses.
The table below shows the relationship between BNC cable length and gain settings.
However, depending on usage conditions, RF level may be insufficient even if these recommendations are
followed. Always check actual operation before finalizing a setting.
* When transmitter output is 10 mW and the distance between the transmitter and antennas is approx. 30 m (98.4 ft.)
At 5D-2V (50 ohms)
BNC cable length
0 m – 10 m (0 ft. – 32.8 ft.)
10 m – 75 m (32.8 ft. – 246.1 ft.)
75 m – 150 m (246.1 ft. – 492.1 ft.) 18 dB
At 8D-2V (50 ohms)
BNC cable length
0 m – 12 m (0 ft. – 39.4 ft.)
12 m – 90 m (39.4 ft. – 295.3 ft.)
90 m – 180 m (295.3 ft. – 590.6 ft.)
* When transmitter output is 10 mW and the distance between the transmitter and antennas is approx. 60 m (196.9 ft.)
At 5D-2V (50 ohms)
BNC cable length
0 m – 5 m (0 ft. – 16.4 ft.)
5 m – 50 m (16.4 ft. – 164 ft.)
50 m – 100 m (164 ft. – 328.1 ft.)
At 8D-2V (50 ohms)
BNC cable length
0 m – 6 m (0 ft. – 19.7 ft.)
6 m – 60 m (19.7 ft. – 196.9 ft.)
60 m – 120 m (196.9 ft. – 393.7 ft.)
Note
Antenna boosters are basically intended only to cover cable losses. High gain settings exceeding the cable
loss compensation requirements may actually result in a smaller service area during simultaneous multi-
channel operation, due to increased intermodulation. For example, when antenna input level is raised, the
range from the antenna to the transmitter increases, but the distance by which the transmitter has to be kept
from the antenna also increases. If taking measures to optimize performance when the transmitter is at a
maximum distance from the antenna, care must be taken so that the performance of the transmitter when
it is closest to the antenna is not impaired. If the antenna booster gain is raised, and a transmitter operating
simultaneously is brought in close proximity to the antenna, the reception performance of the distant
transmitter may deteriorate.The DWX series provides an array of functions including transmitter RF power
switching, antenna booster gain switching, and switching of the RF attenuator integrated in the Digital Wireless
Receiver DWR-R01D. This allows flexible optimization of the service area. Use these functions to establish the
settings required for the respective application.
At 5C-2V (75 ohms)
Gain BNC cable length
0 dB 0 m – 8 m (0 ft. – 26.2 ft.)
10 dB 8 m – 60 m (26.2 ft. – 196.9 ft.)
60 m – 120 m (196.9 ft. – 393.7 ft.) 18 dB
At 7C-2V (50 ohms)
Gain BNC cable length
0 dB 0 m – 10 m (0 ft. – 32.8 ft.)
10 dB 10 m – 70 m (32.8 ft. – 229.7 ft.)
18 dB 70 m – 140 m (229.7 ft. – 459.3 ft.)
At 5C-2V (75 ohms)
Gain BNC cable length
0 dB 0 m – 4 m (0 ft. – 13.1 ft.)
10 dB 4 m – 35 m (13.1 ft. – 114.8 ft.)
18 dB 35 m – 70 m (114.8 ft. – 229.7 ft.)
At 7C-2V (50 ohms)
Gain BNC cable length
0 dB 0 m – 5 m (0 ft. – 16.4 ft.)
10 dB 5 m – 45 m (16.4 ft. – 147.6 ft.)
18 dB 45 m – 90 m (147.6 ft. – 295.3 ft.)
Gain
0 dB
10 dB
Gain
0 dB
10 dB
18 dB
Gain
0 dB
10 dB
18 dB
Gain
0 dB
10 dB
18 dB
UHF System Configuration
43