Shure PA421B Manual


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Side 1/6
WARNING: This product contains a chemical known to the State of California
to cause cancer and birth defects or other reproductive harm.
General Description
Shure antenna combiners actively combine RF outputs from multiple wireless
IEM transmitters to a single antenna, improving RF performance and conserv-
ing rack space.
Features
Reduction of intermodulation artifacts for cleaner RF environment
Wideband operation (470-865 MHz or 865-960 MHz)
Daisy-chain up to 2 combiners with the expansion port.
Provide DC power to compatible IEM transmitters.
LED indications of signal presence, signal overload and current draw
Model Variations
Shure antenna combiners for Shure IEM wireless personal monitoring systems
are available in four-channel and eight-channel rackmountable configurations.
DC Power OutletsRF InputsFrequency RangeModel
44470-865 MHzPA421B
44865-960 MHzPA421BX
08470-865 MHzPA821B
08865-960 MHzPA821BX
The antenna combiners are available in two frequency ranges. The RF inputs
allow up to four or eight (model dependent) IEM systems to share a single
antenna. The DC power outlets and supplied power cables allow you to dis-
tribute power to up to four compatible IEM systems without requiring external
power supplies.
Included Components
DC OUTPUT
MAIN OUT - 50 OHMS
PA4 21B
PSM Antenna Combiner
470- 865 MHz A IN B IN A+B OUT
POWER
EXPANSION PORT
Antenna Combiner
2 ft. DC Power Output Cables* 11 in. BNC Jumper Cables
IEC Power Cable 22 in. BNC Cables**
*(4) 2 ft. DC power output cables are included with four-channel combiners
only.
**The four-channel combiners come with (4) 22 in. BNC cables. The eight-
channel combiners come with (8) 22 in. BNC cables.
Front Panels
INPUT SIGNAL
INPUT SIGNAL
5 6 7 8
MAIN OUT - 50 OHMS
PA821B
PSM Antenna Combiner
470-865 MHz A IN B IN A+B OUT
POWER
EXPANSION PORT
DC OUTPUT
INPUT SIGNAL
MAIN OUT - 50 OHMS
A IN B IN A+B OUT
POWER
EXPANSION PORT
PA421B
PSM Antenna Combiner
470-865 MHz
௟ ௠ ௣ ௤
PA421B
PA821B
① Main Out Antenna Connector
Use the antenna supplied with the transmitter, or any other Shure passive antenna that matches the RF operating range.
② LED Indicators
The LED indicators on the PA421B and PA421BX display RF signal and DC current draw. The LED indicators on the PA821B and PA821BX display RF signal
only. See the section on LED Indicators for more information.
③ Fan Vents
For system cooling.
④ Expansion Port
Connect an IEM transmitter or another combiner to share a single antenna. See the Using Multiple Antenna Combiners with a Single Antenna section for con-
nection information.
1/6©2017 Shure Incorporated
PA421B PA821B
Antenna Combiner


Produkt Specifikationer

Mærke: Shure
Kategori: Ikke kategoriseret
Model: PA421B

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