Shure UA874Z Bruksanvisning
Shure
Inte kategoriserad
UA874Z
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General Description
The Shure UA874 uses a log periodic dipole array to offer enhanced reception
when directed toward the desired coverage area. An integrated amplifier and
four gain settings compensate for varying degrees of coaxial cable signal
loss. The UA874 can be mounted on a microphone stand, suspended from
the ceiling, or mounted to a wall using the integrated swivel adapter.
Features
• Low-noise signal amplifier compensates for insertion loss in coaxial cable
• Compatible with Shure wireless receivers and antenna distribution sys-
tems that provide 10–15 V DC bias
• Integrated threaded adapter mounts easily to microphone stands
• Four-position gain selector switch
• Shure quality, ruggedness, and reliability
Note: will not operateThe antenna without 10-15 V DC bias. This is required
even at -6 dB and 0 dB ("passive") gain settings.
Installation
• Connect the antenna to the receiver or distribution system using Shure
antenna cables (or any 50 ohm, low-loss coaxial cable, such as RG-8U).
• The antenna only operates with receivers or distribution systems that
provide 10–15 V DC bias.
• Lower the gain setting for short cable runs, or increase gain for longer
runs. Note that the quality of the cable, not just the length, contributes
to signal loss. A lighter-grade 50 foot cable may require more gain than
a 100 foot, low-loss cable. Contact the cable manufacturer for cable loss
specifications.
• Direct the antenna toward the intended coverage area.
• Do not use this antenna for transmitting (such as with PSM transmitters)
Cable Maintenance
To maintain top performance for antenna cables:
• Avoid sharp bends or kinks in the cables.
• Do not deform cables with makeshift clamps, such as bending a nail over
the cable.
• Do not use in permanent outdoor installations.
• Do not expose to extreme moisture.
Selecting Antenna Cables
Use 50 ohm low-loss coaxial cable, such as RG-8U. Shure offers pre-termi-
nated antenna cables ranging from 6 to 100 feet.
NOTE: When ordering cables from Shure, select the low-loss "Z" models
(available for longer cables) when using frequency bands above 1000 MHz.
Interface
① Gain Switch
Adjust the four-position gain switch to compensate for the calculated cable loss, based on the length and type of cable.
Caution: There may be a small RF dropout when changing the gain setting.
1/4©2017 Shure Incorporated
UA874Z
Active Directional Antenna
Produktspecifikationer
| Varumärke: | Shure |
| Kategori: | Inte kategoriserad |
| Modell: | UA874Z |
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