Cerwin-Vega UHF pro-plus wireless microphone, T-680 owner manual Operating Instructions

Wireless-Microphones 5

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.

NOTE: The LED does not provide an indication of battery condition. If there is any question as to the condition of the battery, it should be replaced prior to use of the transmitter.

(5)Turn “on” the microphone in the transmitter via the switch on the bottom of the unit (toward the dot). Make an initial adjustment of the microphone gain control of about one-quarter turn from the minimum (fully counterclockwise) position.

(6)With the receiver and transmitter on, the “SQUELCH” indicators on the receiver should be illuminated. Observe the RF-level meter (or bargraph) on the receiver. If the meter does not read well above midscale when the transmitter is within a clear 50-foot radius of the receiver, difficulties are indicated (refer to section “In Case of Difficulty”).

(7)Speak into the microphone at normal voice level. The audio meter 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.

(8)Adjust the transmitter audio gain control, if necessary. When speaking or singing very loudly, the 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.

Internal adjustments are not required for normal operation. 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.

(10) “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.