(5) With the receiver and transmitter on, the “SQUELCH” indicators on the
receiver should be illuminated. Observe the RF-level bargraph on the receiver. If
the bargraph does not read well above “8” when the transmitter is within a clear
50-foot radius of the receiver, difficulties are indicated (e.g., defective transmitter,
receiver, or antenna, excessive distance between transmitter and receiver, or
severe RF propagation problems). Refer to section “In Case of Difficulty”.
(6) Speak into the microphone at normal voice level. The audio VU bargraph on
the associated receiver should indicate audio on voice peaks and the audio should
be audible on the associated monitoring equipment. The audio may also be
monitored on headphones plugged into the receiver “monitor” jack.
(7) Adjust the transmitter audio gain control, if necessary. When speaking loudly,
the COMPRESSION/BATTERY-LOW LED on the transmitter should flash “on”
only on the very loudest voice peaks. This indicates that the transmitter is
reaching the point where soft gain compression is occurring in the microphone
preamplifier. If the system is correctly set up, the compression point will be
reached only rarely.
(8) There are no adjustments inside the transmitter which are required for normal
operation or use.
Due to the great possibility of causing improper operation, or even damage to the
transmitter, only qualified experienced technicians should open the case.
Unauthorized adjustments or repairs inside the equipment case can void your
warranty and cause unnecessary repair cost.
If you feel that internal adjustments or repairs are needed, we recommend you
contact the factory or your nearest authorized service center.
(9) It is always advisable to “walk” the coverage area to ensure that there are no
areas of poor coverage.
Signal “dropouts” (little or no signal in small areas) show up as a flickering of the
“SQUELCH” indicator on the receiver and a brief “fizzing” sound in the audio
(which may or may not be followed by a silent period due to squelched audio).
The audio may be conveniently monitored with headphones plugged into the
front-panel “MONITOR” jack on the receiver. If there is an area where a
“dropout” occurs, the receiving antenna(s) can usually be repositioned to
eliminate the problem. Frequently a change of just a few inches in location will
completely solve the problem.
Antennas
The receiver antenna may be the most important single component in a wireless-
microphone 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. When the distance between the receiver and the transmitter is 100 to
200 feet (30-60 m) or less, and there is a clear, unobstructed line-of-sight path
between the receiver and the transmitter, good results can usually be obtained.
However, it is often desirable to have the receiver next to the console, or in some
other location which does not have a clear line-of-sight path to the transmitter. In
this case, another type of antenna will be needed. Vega offers magnet-mount 1/4-
6
Model T-677 PRO PLUS DYNEX
®
III