Shure PA421B Manual

Shure Ikke kategoriseret PA421B

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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

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.

PA421B PA821B

Antenna Combiner

⑤ Power LED

Green: Combiner is powered on

Red: Indicates fan fault

Green/red flashing: Maximum temperature has been exceeded

Warning! If maximum temperature has been exceeded, attention is required. Allow the combiner to cool. If condition persists, send the unit to Shure Service

and Repair.

⑥ Power Switch

Rear Panels