Vega T-680 Series UHF PRO-PLUS Wireless Microphone Owner's Manual T-689 T-682 T-687 T-688 099-0054B
T-680 Series A Word to Vega Users In selecting Vega wireless microphones, you are in the company of audio professionals worldwide. Leadership for over 30 years has made “Vega” synonymous with wireless microphones. Vega equipment provides superb sound quality, outstanding performance, and durability needed for years of successful operation. Unpacking Unpack and save cartons for storage or reshipping. Verify the equipment shown as “shipped” has been received in good condition.
Wireless-Microphones 1 Unlatch cover and insert a 9-volt battery. Slide 9-volt battery into compartment with the plus “+” terminal as shown above. Slide cover back on. 3 In the area covered by the wireless system, verify the receiver is receiving by observing its indicators (see receiver instructions for details). 5 Adjust mixer/preamp/amplifier to its normal setting. Speak into mic.
T-680 Series Compatibility T-680 Series mics are designed to work with Vega's Model 662 Series receivers. T680s are not necessarily compatible with other receivers, especially if not purchased together. System receivers must use DYNEX®III audio processing and use precisely the same frequencies as the transmitters. The transmitters are not compatible with other manufacturers' receivers. T-680 Series mics work in the 494 to 608 MHz and 614 to 806 MHz UHF range.
Wireless-Microphones Operating Instructions (1) Verify that the associated wireless-microphone receiver is on the exact same frequency as the T-680 Series transmitter to be used. (2) Set up, adjust, and connect the receiver as described in its instruction manual. (3) Verify that the transmitter's battery is fresh. (4) Turn on the transmitter via the switch on the bottom (toward the dot). The LED indicator should flash briefly upon turn-on; this indicates that the battery is installed properly.
T-680 Series Antennas The receiver antenna may be the most important single component in a wirelessmicrophone system. However, this is the item most often overlooked in setting up a system, and is frequently the cause of quite unnecessary problems. Proper placement of the receiving antenna(s) is vitally important in any wireless-microphone system. A whip antenna connected directly to the wireless receiver is adequate for many installations.
Wireless-Microphones UHF communications antennas are also sometimes used for specialized requirements. However, such antennas are usually narrow band and must be modified to function properly in the 494 to 608 MHz and 614 to 806 MHz ranges. Contact the Vega factory or your sales representative for assistance in selecting antennas for unusual applications. Antenna Placement No matter what type of antenna is used, care must be used in positioning and mounting.
T-680 Series In Case of Difficulty The majority of difficulties with Vega wireless mics are not due to equipment failure. Vega equipment is fully tested before leaving the factory. In most instances, problems are due to equipment application. The following paragraphs describe the most commonly encountered application problems. If you are having difficulties with Vega equipment, please review this information and take any necessary corrective action prior to returning the equipment for repair.
Wireless-Microphones 9 Interference Vega wireless-microphone systems have been specifically designed to reject interference. However, interfering signals might fall directly on the receiver frequency, making it impossible to avoid problems completely. As mentioned above, this can be a particular problem if the receiver audio is left open when the transmitter is turned off. Problems with RF noise sources (fluorescent lights, digital effects generators, industrial equipment, etc.) are quite rare.
T-680 Series Receiver Noise Vega wireless microphone receivers are designed to be extremely sensitive. Although high-performance squelch circuits are provided, it is not unusual for the receiver squelch to open and let through audio noise when the transmitter is off.
Wireless-Microphones Important: Be sure the exact return address and a description of the symptoms are enclosed inside the package with your equipment. It's also advisable to return the transmitter and receiver for a full system performance test when practical. Factory Service Center: Vega 9900 E. Baldwin Place El Monte, CA 91731-2294 (626) 442-0782 Claims No liability will be accepted for damages directly or indirectly arising from the use of our materials or from any other causes.
T-680 Series T-680 Series Transmitter Specifications Operating Frequency: Emission/Modulation: RF Frequency Stability: RF Output Power: Spurious Radiation: Audio Processor: Acoustic Input Range: Controls: Indicator: Modulation Limiting (Compressor): Antenna: 494-608, 614-806 MHz Direct FM, crystal controlled, 180KF3E; 75-kHz maximum deviation ±0.
