200 Series Professional VHF Wireless Systems ATW-251 UniPak® Transmitter System ATW-251/G Guitar System ATW-251/H Headworn Microphone System ATW-251/H92 Headworn Microphone System ATW-251/H92-TH Headworn Microphone System ATW-251/L Lavalier Microphone System ATW-252 Handheld Microphone System Installation and Operation
Professional VHF Wireless Systems Installation and Operation This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. This device complies with INDUSTRY CANADA R.S.S. 210, en conformité avec IC: RSS-210/CNR210.
Receiver Installation Location For best operation the receiver should be at least 3' (1 m) above the ground and at least 3' (1 m) away from a wall or metal surface to minimize reflections. Keep the receiver antennas away from noise sources such as digital equipment, motors, automobiles and neon lights, as well as away from large metal objects.
Transmitter Setup Battery Selection and Installation An alkaline 9-volt battery is recommended. Make certain the transmitter power switch is Off before installing or changing batteries. When inserting the battery, observe correct polarity as marked inside the battery compartment. The transmitter housings are designed to prevent incorrect installation of the battery; do not force the battery in. Reversed batteries may cause damage to the transmitter. UniPak® Transmitter Battery Installation 1.
System Operation Turn down the receiver volume control and the mixer/amplifier level before starting up the wireless system. Do not switch on the transmitter yet. Receiver on... Plug the power supply into an AC power source. The green Power indicator on the front panel will light. Transmitter on... When the transmitter is switched on, the receiver’s yellow RF signal indicator will light. The transmitters have a 3-position power switch. When the switch is set to “Standby” (ST or ST.
System Operating Frequencies Frequency Selection Each transmitter/receiver system operates on a single factory aligned, crystal-controlled frequency. Available frequencies are shown in the chart below. Operating frequency is specified by a two character code, such as “T2,” in addition to the actual frequency in MHz. The frequency of each transmitter appears on a label on the outside of the unit.
Specifications† OVERALL SYSTEM Operating Frequency Frequency Stability Modulation Mode Maximum Deviation Operating Range Operating Temperature Range Frequency Response RECEIVER Receiving System Image Rejection Signal-to-noise Ratio Total Harmonic Distortion Sensitivity Audio Output Output Connector Power Supply Dimensions Net Weight Accessories Included VHF high band, 169 MHz to 172 MHz ±0.
Antennas Figure A (p.
Transmitter Controls and Functions Microphone Trimmer (MT) Guitar Trimmer (GT) ➞ ➞ Battery-Save Switch (under screwdriver clip) Battery Polarity Diagram Figure D Figure E Battery Polarity Diagram Battery-Save Switch Figure F Gain Trimmer Screwdriver Figure G Battery Condition Indicator Power Switch Off/Standby/On Input Connector Battery Condition Indicator Antenna Power Switch On/Standby/Off Figure H Figure I 9
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