3
! IMPORTANT SAFETY INSTRUCTIONS !
1.
READ these instructions.
2.
KEEP these instructions.
3.
HEED all warnings.
4.
FOLLOW all instructions.
5.
DO NOT use this apparatus near water.
6.
CLEAN ONLY with dry cloth.
7.
DO NOT block any ventilation openings. Install in accordance with the manu-
facturer's instructions.
8.
DO NOT install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including ampli ers) that produce heat.
9.
DO NOT defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wider blade or the third
prong are provided for your safety. If the provided plug does not t into your out-
let, consult an electrician for replacement of the obsolete outlet.
10.
PROTECT the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11.
ONLY USE attachments/accessories
by the manufacturer.
12.
13.
UNPLUG this apparatus during lightning storms or when unused for long periods of
time.
14.
REFER all servicing to quali ed service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is dam-
aged, liquid has been spilled or objects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not operate normally, or has been
dropped.
15.
DO NOT expose the apparatus to dripping and splashing. DO NOT put objects lled
with liquids, such as vases, on the apparatus.
16.
The MAINS plug or an appliance coupler shall remain readily operable.
17.
The airborne noise of the apparatus does not exceed 70dB (A).
18.
Apparatus with CLASS I construction shall be connected to a MAINS socket outlet
with a protective earthing connection.
19.
To reduce the risk of re or electric shock, do not expose this apparatus to rain or
moisture.
20.
Do not attempt to modify this product. Doing so could result in personal injury
and/or product failure.
USE only with a cart, stand, tripod, bracket, or table
speci ed by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this unit.
This symbol indicates that dangerous voltage constituting a
risk of electric shock is present within this unit.
DESCRIPTION
The Shure PA821A Antenna Combiners actively combine antenna
outputs from up to eight PSM wireless transmitters to a single antenna,
improving RF performance and reducing rack clutter.
INSTALLATION
Set the power switch on the front panel to OFF before installing. Connect
the unit to an AC power source using the supplied power cable. Switch
the power ON to use the device. The power light will illuminate. Power the
unit OFF when not in use or before disconnecting the unit from the AC
power source.
8-TO-1 COMBINING:
1. Using the supplied BNC-BNC cables, connect the
Antenna Output
of each transmitter to the
ANTENNA INPUTS
of the PA821A
(Figure 2).
2. Attach an antenna to the
MAIN Out
of PA821A. For wideband
applications, use PA805SWB directional antenna (Figure 1).
3. Connect the PA821A to a power outlet using one of the supplied
power cables. The PA821A contains a universal power supply to
operate anywhere in the world.
NOTE:
When the PA821A is powered on, the input signal indicators
(1-8) on the front panel will illuminate if an active transmitter is con-
nected to the corresponding input (1-8) on the back panel (Figure 1).
WARNING:
Voltages in this equipment are hazardous to life. No user-serviceable parts inside. Refer all servicing to quali ed service personnel. The
safety certi cations do not apply when the operating voltage is changed from the factory setting.
WARNING:
This product contains a chemical known to the State of California to cause cancer and birth
defects or other reproductive harm.
PSM Transmitters
AC
POWER
FIGURE 2
FIGURE 1
