DX-837 UHF BAND PLL SYNTHESIZED WIRELESS GOOSENECK MICROPHONE FEATURES Operating on UHF band frequency range 790~806MHz with PLL synthesized control. PLL (Phase Locked Loop) synthesized wireless microphone system with 16 switchable frequencies makes it easy to choose non-interference channels. DX-837 wireless desktop microphone is well suitable for broadcasting, meetings & speech in public areas. DX-837 is equipped with slim & flexible gooseneck, beautiful & rugged microphone with multi-function panel. DX-837 equipped with professional uni-directional electret condenser unit to avoid sounds coming from the sides & rear of the microphone to perform high sensitivity, wide-range frequency response, bright & crisp sound reproduction. The mic features Hi, Normal or Low audio frequency selector, on/off and volume control to control the microphone signal output. Special circuitry design to eliminate pop audio on/off switch. Operation on UHF band equipped with high sensitivity, reliable receiver to ensure the high quality RF & AF reproduction. The service area is about 50~100M. Powered by 2 x UM-3 batteries. Over 7 hours continuous operation. With one LED to indicate battery strength. When the LED turns from green to red color, please replace a new battery. This microphone has LINE IN audio jack to extend the service area and sensitivity by connecting various audio resources or another desktop microphone. 0.005% with quartz controlled SPECIFICATIONS Frequency Range . UHF 790~806MHz RF Power Output.. 30mW max. Oscillation Mode .. PLL Synthesized, 16-CH Frequency Stability .. Maximum Deviation .. 15KHz with limiting compressor Suprious Emission . .. Less than 43dB below carrier frequency T.H.D. . . .. Less than 0.5% (at 1KHz) Power Supply .. . UM-3(AA size)x2 Battery Life .. .. about 7~8 hours continuous operation. Tone Key .. .. 32KHz tone key control Mic Unit .. Uni-directional condenser type LED Indicator . Power ON-OFF & Low battery & TALK indicator Dimensions(Gooseneck) . 25f x340mm Base(LxWxH) 151mmx125mmx40mm NAME OF COMPONENT FRONT PANEL UHF PLL SYNTHESIZED TRANSMITTER TALK INDICATOR HI OFF LOW ON OFF PWR PUSH TO TALK/PUSH OFF SWITCH FILTER SELECTOR TO CHOOSE HI FREQUENCY OR LOW FREQUENCY POWER INDICATOR POWER ON/OFF AND VOLUME CONTROL
REAR PANEL 4P CONNECTOR CONNECTING DIAGRAM SHIELDED CABLE SIGNAL 1 2 4 3 GROUND CHANNEL SELECTOR CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 CH 9 CH10 CH 11 CH 12 CH 13 CH14 CH 15 CH 16 LINE IN AUDIO JACK TO CONNECT VARIOUS RESOURCES OR ANOTHER DESKTOP MIC SUCH AS ED-337 C H 1 C H 2 C H 3 C H 4 7 9 0 . 3 7 5 7 9 1 . 1 2 5 7 9 2 . 1 2 5 7 9 3 . 2 5 0 C H 5 C H 6 C H 7 C H 8 7 9 4 . 2 5 0 7 9 5 . 1 2 5 7 9 6 . 2 5 0 7 9 7 . 3 7 5 C H 9 C H 1 0 C H 1 1 C H 1 2 7 9 8 . 3 7 5 7 9 9 . 8 7 5 8 0 0 . 8 7 5 8 0 1 . 6 2 5 C H 1 3 C H 1 4 C H 1 5 C H 1 6 8 0 2 . 7 5 0 8 0 3 . 8 7 5 8 0 4 . 7 5 0 8 0 5 . 3 7 5 M H z OPERATION 1. Push to open the battery cover under the base. 2. Insert two UM-3 batteries into the battery compartment according to polarity (+) and (-) indication marked on the battery housing. 3. Fit battery cover back. 4. Turn the volume with power-on-off switch to ON firstly, the Power indicator will be lighted in green to indicate the carrier frequency is sent out. Push TALK button to the second step, the TALK indicator will be lighted to indicate the microphone is operating. 5. Use the Volume control to set the output level and the Filter Selector to choose Hi, Low or Normal audio frequencies as you like. 6. When you do not want to talk, push the TALK button again and the TALK indicator will fade away. 7. Turn the power button to OFF when mic is not used, and remove the battery if not used for a long time. This will prevent from the damage that a defective leaking battery may cause. 8. Turn the power "ON", the power indicator lighted in green means that power supply is normal and the power indicator turned to red means that the battery is in need of replacement. CONNECTING DIAGRAM WIRELESS GOOSENECK MICROPHONE WITH WIRELESS RECEIVER DX-837 DX-837 WIRELESS GOOSENECK MICROPHONE AND ED-337 CONDENSER GOOSENECK MICROPHONE WITH WIRELESS RECEIVER ED-337