QLXD2 Service Manual
Contents
1. C 572 636 MHz J50 J51 Group D 606 670 MHz K51 K52 Group E 632 714 MHz L50 L51 L52 L53 Group F 710 782 MHz P51 P52 Group G 794 806 MHz Q51 Group H 823 865 MHz S50 Group J 925 937 5 MHz X50 TRANSMITTER CONTROLS AND CONNECTORS Quick Start Step 1 Power and Antenna Connection l l l l 3 Connect the receiver audio output to a mixer or amplifier 1 Connect an antenna to each of the antenna connectors Step 2 Scanning for the Best Available Frequency 2 Connect the power supply to the receiver and plug into an AC 1 Press the menu button on the receiver to access the scan function power source napa 4 Press and hold the power button to turn on the receiver 2 Press the enter button to start a frequency scan The scan icon will flash while in scan mode When the scan is complete the selected group and channel appears on the display a a baktie g LA ey he Step 3 Install Batteries into Transmitter 2 AA Batteries Shure SB900 Battery A i gt Qa D mom B IN M Accessing the Battery Compartment Press the side tabs on the bodypack or unscrew e AA Batteries Place batteries note polarity markings and AA Adaptor as shown the cover on the handheld as shown to access the e Shure SB900 Battery Place battery as shown note polarity markings remove AA battery compartment Adaptor from bodypack transmitter stow AA Adaptor in door for handhe2. O OC SHURE QLXD2 Service Manual HAND HELD TRANSMITTER 25A1164 PRODUCT DESCRIPTION Figure 1 QLXD2 Hand Held Transmitter General Product Description QLXD Wireless is a digital wireless microphone system The system comprises a bodypack transmitter QLXD1 a handheld microphone transmitter QLXD2 and a single channel receiver QLXD4 The system operates in the UHF TV band 470 to 937 5 MHz QLXD Wireless is intended for use in mid tier presentation installed and performance markets FEATURES Notable QLXD1 design features include e Fast transmitter power on lt 1 sec e Segmented LCD interface e Infrared sync with firmware update capabilities e Thread locking TA4 audio connector e High dynamic range Gain Ranging audio input e Highly transparent compander free low latency digital audio e 256 bit AES Encryption e Operates on 2 AA size batteries or the SB900 rechargeable Li ion battery pack e Long Battery life gt 10 h with SB900 at 10mW e Wide tuning range 64 MHz at 500MHz e Selectable output power 1mW 10mW e Removable antenna e Charge contacts allow charging SB900 without removal e Metal construction The transmitter is built in eight board groups A J which are set in software to behave as a specific band for sale The transmitter may be reprogrammed to a different band without retuning on a test fixture Group A 470 534 MHz G50 G51 or G52 Group B 534 598 MHz H50 H51 H52 H53 Group
3. ld transmitter 2 Installing Batteries Step 4 IR Sync to Create an Audio Channel 3 sync good appears on the display when IR sync is complete The blue rf LED will illuminate indicating that the transmitter is within range of the receiver 1 Press the sync button on the receiver The red ir LED will blink indicating that 5i sync mode is active Via ea ena ttl O l1 2 Align the IR sync windows of the transmitter and receiver at a distance of lt 15 cm 6 in When the transmitter SYNE and receiver are aligned the red ir a LED remains on and the sync will automatically occur arter j Note Ifthe IR sync fails repeat the IR sync procedure carefully maintaining alignment between the IR windows of the transmitter and receiver Step 5 Sound Check and Gain Adjustment 1 Test the transmitter at performance levels while monitoring the audio meter and the audio LED f f i wer scan on Tip The audio meter should display at least 3 bars and the audio LED should be green Reduce the gain if there is Tm tt iiticna CO OC O audible distortion of the audio Po Pall oOo 2 Increase or decrease the gain if necessary by pressing the AV buttons on the receiver front panel
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