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200 Series Owners Manual  v.1 

7-6-06 

Page 3 of 9 

phone plug to connect the receiver’s AF Out jack to the mixer/amplifier’s aux-
level input. 

 
Power Connection 

Connect the DC plug on the included AC power adapter to the DC power input 
on the back of the receiver. Secure the cord over the cord hook on the back of 
the receiver, to keep the plug from being detached by an accidental tug on the 
cord. Then plug the adapter into a standard 120 Volt 60 Hz AC power outlet.  
 
(Note that the receiver has no power Off/On switch. The receiver will be 
energized whenever the power adapter is connected and plugged into the AC 
outlet. Unplug the power supply from the AC outlet when the system is not in use 
– both for safety, and to conserve energy.) 
 

Antennas 

A novel “dipole” antenna system on the receiver improves operation by providing 
a “ground” element in addition to the usual “signal” element. Position the two 
antennas at 90° in the form of a “V,” or position the left (“signal”) antenna 
vertically and the right (“ground”) antenna horizontally, in the shape of an “L” (Fig. 
B). Use the position that performs better in your operating environment. Be 
certain to extend both antennas to their full 15" (38 cm) length by holding them at 
their bases and pulling out on their caps. Both antenna elements may be 
swiveled to the left and right, but do not attempt to rotate them in a 
screwing/unscrewing motion. To do so may damage the antenna and/or receiver. 
For best performance, locate the receiver so its antennas are in direct line-of-
sight to the transmitter’s likely operating position. 

 

Receiver Controls and Functions 

 

Front Panel Controls and Functions (Fig. C) 

1. ANTENNAS: Position the “signal” antenna (1a) and “ground” antenna (1b) as 
shown in Figure B. 
 
2. POWER INDICATOR: Lights when power is supplied to the receiver. 
 
3. RF INDICATOR: Lights to show presence of transmitter signal. 
 
4. AF PEAK INDICATOR: Only lights when audio distortion is present at 
maximum modulation. Not affected by position of Volume control. 
 

Rear Panel Controls and Functions (Fig. D) 

5. VOLUME CONTROL: Adjusts the audio level at the 1/4" output jack. Does not 
affect AF Peak indicator. 
 
6. DC POWER INPUT: Connect the provided docking power adapter, or other 
12V DC source. (Receiver requires 200 mA.) 
 

Summary of Contents for ATW-251

Page 1: ...side the receiver and transmitter have been precisely adjusted for optimum performance and compliance with federal regulations Do not attempt to open the receiver or transmitter To do so will void the warranty and may cause improper operation Notice to individuals with implanted cardiac pacemakers or AICD devices Any source of RF radio frequency energy may interfere with normal functioning of the ...

Page 2: ...tically adapts to changes in mains voltage Unlike bulky linear power supplies this switching power supply is lightweight and compact it uses only a single outlet space The versatile ATW T201 UniPak body pack transmitter has both a high impedance input for instruments and a low impedance input with bias connection for use with dynamic and electret condenser microphones The ATW T202 handheld transmi...

Page 3: ...orizontally in the shape of an L Fig B Use the position that performs better in your operating environment Be certain to extend both antennas to their full 15 38 cm length by holding them at their bases and pulling out on their caps Both antenna elements may be swiveled to the left and right but do not attempt to rotate them in a screwing unscrewing motion To do so may damage the antenna and or re...

Page 4: ... battery observing polarity markings 3 Replace the battery cover Fig F Handheld Transmitter Battery Installation 1 While holding the upper part of the transmitter body just below the ball screen unscrew the lower body cover and slide it downward to expose the battery compartment Fig G Do not attempt to pull the lower body farther down or to gain access to the electronics 2 Lift the white battery k...

Page 5: ...inal experiment with different transmitter positions on your body or instrument or try repositioning the receiver Do not attempt to remove replace or change the length of the transmitting antenna 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 A...

Page 6: ...t turn the GT control slightly counterclockwise until the AF Peak indicator no longer lights with maximum instrument input to the transmitter After adjusting input level return the screwdriver to its clip and reinstall the battery cover No further transmitter gain adjustments should be needed as long as the input device and the acoustic input level are not changed Adjusting Input Level Handheld Tr...

Page 7: ...heir normal range not set too high or too low This provides the optimum signal to noise for the entire system 9 Turn the transmitter off when not in use Remove the battery if the transmitter is not to be used for a period of time 10 Unplug the receiver from the AC outlet when the system is not in use System Operating Frequencies Frequency Selection Each transmitter receiver system operates on a si...

Page 8: ...udes clothing clip and windscreen Provided with ATW 201 L systems MT830cW Subminiature omnidirectional condenser lavalier microphone Includes clothing clip and windscreen MT830cW TH Theater model same as MT830cW except beige color mic and cable for concealment AT831cW Miniature cardioid condenser lavalier microphone Includes clothing clip and windscreen AT851cW Surface mount wide range hemi cardio...

Page 9: ... in a variety of lengths Also available with one straight and one 90 phone plug as the AT8316 AT8456a Stand clamp for handheld transmitter 5 8 27 threads ATW VP10 Vinyl pouch with belt clip to hold UniPak transmitter Receiver Power Supply Antennas Receiver Controls and Functions Transmitter Controls and Functions ...

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