Vega R-662A PRO PLUS Owner'S Manual Download Page 13

A more serious problem is selection of wireless-microphone operating frequencies
which are inherently subject to interference due to intermodulation. Fortunately, a
proper initial selection or changing frequencies will usually correct any such
problem. Vega offers a free computerized frequency-selection service to
purchasers of our equipment. If the frequency of other wireless equipment to be
used in a given area is known, interference-free frequencies can be chosen.
However, if equipment is added later without frequency coordination, it is likely
that an interference problem will occur. Should this happen, contact the Vega
factory or your sales representative for assistance. Many wireless systems may be
used in an area. However, careful frequency coordination is essential.

Microphone Problems

Almost all electret microphones are sensitive to RF energy and require special
precautions to operate properly with wireless transmitters. If the sound quality of
a microphone changes drastically when its position with respect to the transmitter
changes, it is likely that RF susceptibility is the cause. Contact the Vega factory
or your sales representative if assistance is required. Lavalier mics purchased
from Vega are specially assembled with added components to avoid this problem.

The wires in lavalier electret microphone cables are usually very small. After a
period of heavy use, the conductors may fray, resulting in intermittent failure or
severe noise. The wire also may break. It is advisable to have a spare microphone
available in good working condition (it does not need to be a high quality unit). A
spare microphone enables easy localizing of problems due to bad microphone
cables by merely substituting the spare for the suspected unit.

Warranty (Limited)

All Vega wireless products are guaranteed against malfunction due to defects in
materials and workmanship for one year, beginning at the date of original
purchase. If such a malfunction occurs, the product will be repaired or replaced
(at our option) without charge during the one-year period, if delivered to the Vega
factory. Warranty does not extend to damage due to improper repairs, finish or
appearance items, malfunction due to abuse or operation under other than the
specified conditions, nor to incidental or consequential damages. Some states do
not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation may not apply to you. This warranty gives the customer
specific legal rights, and there may be other rights which vary from state to state.

Vega authorized service centers enable Vega to give customers immediate service
on repairs. These service centers are fully qualified and equipped to handle the
servicing of Vega equipment, and turnaround time is excellent. To obtain the
address of your nearest authorized warranty service center, contact your dealer or
the factory.

If you should require service, pack the equipment carefully and return it to the
factory service center or the nearest authorized service center.

Important: Be sure the exact return address and a description of the symptoms are
enclosed inside the package with your equipment.

It is also advisable to return the transmitter and receiver for full system
performance test when practical.

UHF Diversity Wireless-Microphone Receiver
13

Summary of Contents for R-662A PRO PLUS

Page 1: ...Owner s Manual R 662A PRO PLUS UHF Wireless Microphone Receiver...

Page 2: ...ber your authorized Vega service dealer knows your equipment best They have the training and test equipment necessary to restore your equipment to its peak performance Please feel free to contact eith...

Page 3: ...he receiver operating frequency can be changed in the field by means of a rear panel mounted rotary switch This allows the receiver to be tuned easily to any one of up to four T 677 Series bodypack tr...

Page 4: ...is is the way the R 662A PRO PLUS receiver should normally be operated If the operator wishes to force the receiver to select either channel A or B he she may do so by rotating the DIVERSITY SELECT sw...

Page 5: ...ack accepts either stereo or mono headphones and allows the operator to monitor the audio at the receiver Output impedance is about 22 ohms Audio level meter Indicates the relative demodulated audio l...

Page 6: ...inal operation The metal top cover of this module must be removed to access this switch Caution detach ac power cord before removing the module cover Alkaline Battery Power Module The battery power mo...

Page 7: ...External dc input accepts 12 20 Vdc 300 mA Center pin is outer conductor is Frequency select switch The R 662A receiver can accept up to four crystals in the first local oscillator to make a four fre...

Page 8: ...as will be used they should be connected directly to the recessed BNC antenna connectors on the rear panel 4 If Vega cable connected antennas are used connect each of the two cables to the antenna con...

Page 9: ...how selection of that channel 12 Turn on the transmitter to be used with the system If using a bodypack transmitter connect the microphone to the transmitter 13 The audio levels should now be set for...

Page 10: ...are often used for this purpose A wide bandwidth yagi or log periodic antenna also works well in this application UHF communication antennas are also sometimes used for specialized requirements Such a...

Page 11: ...batteries tested by Vega provide equal life and equivalent reliability Others will work but battery life may be short and current inadequate Lithium 9 volt batteries may also be used when extended ope...

Page 12: ...ick up much more ambient noise than handheld microphones In many sound systems on stage monitors are used Often the directional characteristics of handheld microphones provide the only protection from...

Page 13: ...dition it does not need to be a high quality unit A spare microphone enables easy localizing of problems due to bad microphone cables by merely substituting the spare for the suspected unit Warranty L...

Page 14: ...io Canada Inc PO Box 520 345 Herbert St Ganaoque Ontario Canada 613 382 2141 Vega Fax Library Information including more detailed procedures schematics and other Vega products is available 24 hours a...

Page 15: ...UHF Diversity Wireless Microphone Receiver 15...

Page 16: ...16 Model R 662A PRO PLUS Dynex III...

Page 17: ...hone Receiver 17 www vegawireless com 9900 East Baldwin Place El Monte California 91731 2294 Telephone 818 442 0782 Toll Free 800 877 1771 Fax 818 444 1342 CompuServe 73513 1417 FaxBack 818 444 2017 T...

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