SSM Manual - Lectrosonics.com
Contents
1. esses 11 6 ACCESS OMICS 12 AUDIO Button Specifications 13 FREQ Buttons Service and Repair ee 14 e Returning Units for 14 UP and DOWN Arrow Buttons Connectors and USB Port esee Attaching and Removing the Microphone 7 Operating 8 Powering On in Operating MOde 8 Powering On in Standby 8 terii rr eren eta Setup Screens Screens Used in Normal 8 SOUP Steps tiinas M Y 8 FCC Notices For body worn operation this transmitter model has been tested and meets the FCC RF exposure guidelines when used with the Lectrosonics accessories supplied or designated for this product Use of other accessories may not ensure compliance with FCC RF exposure guidelines Contact Lectrosonics if you have any questions or need more information about RF exposure using this product This device complies with FCC radiation exposure limits as set forth for an uncontrolled en2. that the RF output of the transmitter is turned off F OFF In this Standby Mode the frequency can be browsed to make adjustments without the risk of interfering with other wireless systems nearby After adjustments are made press the power button again to turn the unit off Powering Off Holding the Power Button O in and waiting for the completion of the countdown from 3 to 1 will turn the power off 39U0FFE If the power button is released before the countdown is completed the unit will remain turned on and the LCD will return to the same screen or menu that was dis played previously Setup Screens Two different setup menus are accessed by holding ei ther the UP or DOWN arrow button while powering the unit on See the opposite page for a listing of the menu items and descriptions Screens Used in Normal Operation When the transmitter is turned on with the RF output on the LCD will display the frequency audio gain or LF roll off point Audio gain is expressed in dB Hud 3c Frequency is displayed in one of two ways 5 i Frequency expressed in MHz cie Lo 15 sd AN Standard Frequency Offset in frequency in hex MHz 75 block 22 code C8 LF roll off is expressed in Hz AN L LJ To make changes to the settings press either button to display the desired screen then use the UP and DOWN arrows to select the value The changes take effect im mediately when you release th
3. capped with a translucent dome material to broaden the reception angle The input jack is a rugged 3 pin LEMO connector with a threaded locking sleeve The opposite end of the transmitter contains the battery door latches and release tabs and the USB port which is used for firmware updates Battery door release tabs Removable belt clip Battery door latch USB port The battery door itself is made of stainless steel to allow a thin wall thickness but retain the strength to withstand heavy use Rio Rancho NM Attaching and Removing the Microphone Align the ridges on the plug with the grooves in the jack and insert the plug Grooves in the jack must align with ridges on the plug Slide the threaded sleeve onto the jack and rotate it clockwise to tighten it Tighten the sleeve to secure the connection SSM Operating Instructions Powering On in Operating Mode Press and hold the Power Button for several seconds until a counter on the LCD progresses from 1 through 3 followed by a display of the model firmware version freguency block and compatibility mode n un tan When you release the button the unit will be operation al with the RF output turned on and the Main Window displayed Powering On in Standby Mode A brief press of the Power Button releasing it before the counter has reached 3 will turn the unit on with the RF output turned off The LCD will display a reminder
4. factory the various controls and trimmers do not drift with age or vibration and never require readjustment There are no adjustments inside that will make a malfunctioning unit start working LECTROSONICS Service Department is eguipped and staffed to guickly repair your eguipment In warranty repairs are made at no charge in accordance with the terms of the warranty Out of warranty repairs are charged at a modest flat rate plus parts and shipping Since it takes almost as much time and effort to determine what is wrong as it does to make the repair there is a charge for an exact guotation We will be happy to guote approximate charges by phone for out of warranty repairs Returning Units for Repair For timely service please follow the steps below A DO return equipment to the factory for repair without first contacting us by e mail or by phone We need to know the nature of the problem the model number and the serial number of the eguipment We also need a phone number where you can be reached 8 A M to 4 P M U S Mountain Standard Time After receiving your request we will issue you a return authorization number R A This number will help speed your repair through our receiving and repair departments The return authorization number must be clearly shown on the outside of the shipping container Pack the equipment carefully and ship to us shipping costs prepaid If necessary we can provide you with the proper packing
5. in a two character designation such as B8 5C AD 74 etc The first character indicates the position of the left hand switch and the second charac ter indicates the position of the right hand switch This designator is commonly called a hex code FREQUENCY 1 6MHz 100kHz On older transmitter models the left hand switch makes steps in 1 6 MHz increments the right hand switch in 100 kHz increments Each block spans a 25 6 MHz band A simple formula is used to name the blocks according to the lowest fre guency in each one For example the block starting at 512 MHz is named Block 20 since 512 divided by 25 6 eguals 20 Special blocks were created later in differ ent freguency bands using the lowest freguency in the block as the designator US Patent 7 225 135 All wireless links suffer from channel noise to some degree and all wireless microphone systems seek to minimize the impact of that noise on the desired signal Conventional analog systems use compandors for enhanced dynamic range at the cost of subtle artifacts known as pumping and breathing Wholly digital systems defeat the noise by sending the audio informa tion in digital form however it is often at the cost of one or more issues regarding power bandwidth operating range and resistance to interference The Lectrosonics Digital Hybrid Wireless system over comes channel noise in a dramatically new way digitally encoding the audio in the transmit
6. materials UPS or FEDEX is usually the best way to ship the units Heavy units should be dou ble boxed for safe transport D We also strongly recommend that you insure the equipment since we cannot be responsible for loss of or dam age to equipment that you ship Of course we insure the equipment when we ship it back to you Lectrosonics USA Mailing address Shipping address Telephone Lectrosonics Inc Lectrosonics Inc 1 505 892 4501 PO Box 15900 561 Laser Rd Suite 102 800 821 1121 Toll free US and Canada Rio Rancho NM 87174 Rio Rancho NM 87124 Fax 1 505 892 6243 USA USA Web E mail www lectrosonics com service repair lectrosonics com sales lectrosonics com Lectrosonics Canada Mailing Address Telephone E mail 720 Spadina Avenue 1 416 596 2202 Sales colinb lectrosonics com Suite 600 877 753 2876 Toll free Canada Service joeb lectrosonics com Toronto Ontario M5S 2T9 877 7LECTRO Fax 416 596 6648 74 LECTROSONICS INC Micro Body Pack Transmitter Rio Rancho NM 15 NNAM LIMITED ONE YEAR WARRANTY The eguipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer This warranty does not cover eguipment which has been abused or damaged by careless handling or shipping This warranty does not apply to used or demonstrator eguipment N Z MR N Should any defect develop Lectro
7. or visit the FCC s wireless microphone website at www fcc gov cgb wirelessmicrophones To operate wireless microphone systems at power greater than 50mW you must qualify as a Part 74 user and be licensed If you qualify and wish to apply for a license go to http www fcc gov Forms Form601 601 htmi Rio Rancho NM 3 SSM Introduction Three Block Tuning Range About Digital Hybrid Wireless The SSM transmitter tunes across a range of over 76 MHz This tuning range covers three standard Lectro sonics freguency blocks lt TUNING RANGE Four bands are available covering standard blocks as follows Band Blocks Covered Freg MHz 470 19 20 470 1 537 5 21 22 23 537 6 614 3 24 25 26 614 4 691 1 27 28 29 691 2 767 9 Export Only To simplify backward compatibility with earlier Digital Hybrid Wireless equipment block numbers are pre sented along with frequencies in LCD screens About Frequency Blocks A 25 6 MHz band of frequencies referred to as a Block came about with the design of the first frequency tunable Lectrosonics wireless products These prod ucts provided two 16 position rotary switches to select frequencies as shown in the illustration below A logical method of identifying the switch positions was using 16 character hexadecimal numbering This naming and numbering convention is still used today The 16 switch positions are numbered 0 zero through F presented
8. 0 Note The dual envelope soft NORMAL 107 0 111 5 limiter provides exceptionally good handling of transients using variable FULL 108 5 113 0 attack and release time constants Once activated the limiter compresses 30 dB of transmitter input range into 4 5 dB of receiver output range thus reducing the measured figure for SNR without limiting by 4 5 dB Controls Side panel membrane switches with LCD interface for power on off and all setup and configuration controls Audio Input Jack LEMO 00 Series 3 pin Antenna Galvanized steel flexible wire Battery Lithium ion 3 7 V 1000 mAH NP50 battery pack Battery Life 6 hours per charge Weight 2 3 ounces 65 2 grams including lithium battery Dimensions housing 2 3 x 1 5 x 56 in 58 4 x 38 x 14 2 mm Emission Designator 180KF3E Rio Rancho NM 13 SSM Service and Repair If your system malfunctions you should attempt to correct or isolate the trouble before concluding that the eguipment needs repair Make sure you have followed the setup procedure and operating instructions Check the interconnect ing cables We strongly recommend that you do not try to repair the eguipment yourself and do not have the local repair shop attempt anything other than the simplest repair If the repair is more complicated than a broken wire or loose connec tion send the uniit to the factory for repair and service Don t attempt to adjust any controls inside the units Once set at the
9. INSTRUGTION MANUAL SSM Micro Bodypack Transmitter Quick Start Steps 1 Install a good battery and turn power on see pages 5 and 8 2 Set the compatibility mode to match the receiver see page 9 3 Connect the signal source and adjust input gain for optimum modulation level see page 10 4 Set Step Size and frequency to match receiver see pages 8 and 9 Also refer to the receiver manual for the RF scanning procedure to find a clear operating frequency 5 Turn on the receiver and verify that solid RF and audio signals are present See receiver manual Serial Number LECTROSONICS Purchase Date NE Rio Rancho NM USA www lectrosonics com SSM LECTROSONICS INC Micro Body Pack Transmitter Table of Contents Introduction Setup Three Block Tuning Range DOWN Button Menu T About Frequency Blocks eene UP Button Menu ecce eor About Digital Hybrid Wireless 4 Adjusting the Input 10 Battery Charging Input Jack Configuration Battery Installation ee 5 Locking the nine nananana naan 10 Controls and Functions 6 Remote Control 10 Modulation LEDs IR infrared SYNC 11 LOD SCreeti eene ee eus Removable Belt Clip
10. d the gain is too low In the table below 0 dB indicates full modulation Signal Level 20 LED 10 LED Less than 20 dB O Off O Off 20 dB to 10 dB O Green O Off 10 dB to 0 dB O Green O Green 0 dB to 10 dB O Red O Green Greater than 10 db O Red O Red LCD Screen The LCD is a numeric type Liguid Crystal Display with screens for adjusting output power freguency audio level low freguency audio roll off and various modes and options The transmitter can be powered up with or without the RF output turned on A brief press on the power button turns the unit on in a Standby Mode with the output turned off to allow adjustments to be made without interfering with other wireless systems in the vicinity BATT LED This LED glows green when the battery is good The color changes to red when there is only a few minutes of operation left The LED will blink briefly just before the unit powers down The exact point at which the LED turns red will vary with battery brand and condition temperature and cur rent drain The LED is intended to simply catch your attention not to be an exact indicator of remaining time AUDIO Button The AUDIO button is used to adjust the audio output level and low frequency roll off Each press of the button will toggle between the two settings FREQ Button The FREQ Button displays the selected operating frequency and toggles the LCD between displaying the actual operating frequ
11. e slots is pin 1 ground Pin 2 is used for the Sanken COS 11 microphone only Pin 3 is the audio bias con nection for two wire microphones and line inputs Pin 1 Guide slots Pin Pin 3 Sanken COS 11 Pin 1 ground shield Pin 2 2k source load to ground white wire Two wire microphones Pin 1 Ground shield Pin 3 Audio and Bias Pin 3 servo input black wire Voltages phase impedance and line level for all signal sources are selected by menus The Sanken CUB 01 is not supported Menu selections include presets for popular micro phones and a sub menu for manual setup Refer to the section entitled Setup Screens on the previous page for details Locking the Controls The keypad can be locked to prevent inadvertent changes to be made to the transmitter Press and hold both the UP and DOWN arrow buttons for several seconds until a countdown is completed on the LCD The display will show unloc 3 2 1 and then Loc will appear Remove the battery to unlock the controls Remote Control Remote control signals dweedle tones may be used to control the transmitter The tones are played back into the microphone to avoid the need to reach and handle the transmitter when making changes to the following adjustments and settings e Input Gain Sleep Unsleep e Lock Unlock e Tx power output e Frequency A smart phone app is available in the App Store and in Google Play to implement this con
12. e buttons Setup Steps The setup menus are accessed by holding either the UP or DOWN arrow while powering the unit on Refer to Setup Screens on the previous page for details of each setup parameter The following list outlines the steps necessary to set up the transmitter for normal use 1 Install a charged battery 2 Setthe compatibility mode to match the receiver to be used 3 Adjust the step size and frequency to match the receiver The frequency is normally determined us ing the receiver to identify one within clear operat ing spectrum Refer to the receiver instructions for details on using features such as scanning NOTE Some Lectrosonics receivers include an IR infrared port to transfer settings from the receiver to the transmitter Refer to the section on IR infrared Sync for details 4 Connect the microphone or audio source to be used Select the correct input configuration 5 Adjust the input gain Refer to Adjusting the Input Gain on the following page for details 6 Turn on the receiver and verify that solid RF and audio signals are present see receiver manual LECTROSONICS INC Micro Body Pack Transmitter Setup Screens DOWN Button Menu Hold the DOWN button while powering up the unit Then press the AUDIO button repeatedly to scroll through the following settings Use the UP and DOWN arrows to select the available options under each setting e rc remote control operation selec
13. ency in MHz and a two digit hexadecimal number that corresponds to the equivalent Lectrosonics Frequency Switch Setting Power Button Turns the unit on and off A brief press turns power on in a Standby Mode to make settings without interfering with other wireless systems in the vicinity Pressing and holding the button until a counter on the LCD completes a sequence turns the power on with the RF output turned on Pressing and holding for the duration of a countdown turns the unit off UP and DOWN Arrow Buttons The Up and Down arrow buttons are used to select the values on the various setup screens and to lock out the control panel Press and hold both buttons until a countdown is completed to lock the keypad Remove the battery to unlock the keypad These arrow keys also turn the LEDs on and off With no other button pressed the UP arrow turns the LEDs on and the DOWN arrow turns them off When the LEDs are tuned off the LCD with display a reminder every few seconds See Operating Instructions and Setup Screens for compete information LECTROSONICS INC Micro Body Pack Transmitter Connectors and USB Port The housing is machined out of a solid aluminum billet for a rugged lightweight assembly IR infrared port Galvanized steel flexible whip antenna The antenna is a flexible whip made of galvanized steel permanently attached to the transmitter to prevent damage from heavy use The IR port is
14. nges yet prevent the per charge Battery life can be monitored from the timer door from being opened accidentally function built into current Lectrosonics receivers Sgueeze tabs inward to release door catch The factory supplied battery charger provides a folding NEMA 2 prong plug and will operate from 100 240 VAC sources The LED glows red during charging and turns green when the battery is fully charged Battery contacts Battery charger Lectrosonics part number 40100 Insert battery contact end first CAUTION Use only the factory supplied battery and battery charger Press opposite end of battery into compartment If the battery is inserted incorrectly the door will close but the unit will not operate Rio Rancho NM 5 SSM Controls and Functions Modulation LEDs BATT LED 7 O Qs dyes Power Button Modulation LEDs Proper input gain adjustment is critical to ensure the best audio quality Two bicolor LEDs will glow either red or green to accurately indicate modulation levels The input circuitry includes a wide range DSP controlled limiter to prevent distortion at high input levels It is important to set the gain audio level high enough to achieve full modulation during louder peaks in the audio The limiter can handle over 30 dB of level above full modulation so with an optimum setting the LEDs will flash red during use If the LEDs never flash re
15. o audio will en ter the sound system or recorder during adjustment 1 With a charged battery in the transmitter power the unit on in the standby mode see previous section Powering On in Standby Mode 2 Press and hold the AUDIO button with Aud and a numeral on the display e g Aud 22 3 Prepare the signal source Position a microphone the way it will be used in actual operation and have the user speak or sing at the loudest level that oc cur during use or set the output level of the instru ment or audio device to the maximum level that will be used 4 Use the and amp arrow buttons to adjust the gain until the 10 dB glows green and the 20 dB LED starts to flicker red during the loudest peaks in the audio 5 Once the audio gain has been set the signal can be sent through the sound system for overall level adjustments monitor settings etc 6 If the audio output level of the receiver is too high or low use only the controls on the receiver to make adjustments Unless the microphone or its position changes or a different instrument is being used leave the transmitter gain adjustment set accord ing to these instructions Use the audio output level control on the receiver to make adjustments for the desired level being delivered to the connected mixer recorder etc 10 Input Jack Configuration Looking into the 3 pin Lemo mic connector from the out side of the transmitter the pin centered in the two guid
16. ries Rechargeable battery P N 40098 3 7V lithium ion battery pack Battery charger P N 40100 charger for Lectrosonics P N 40098 lithium ion battery Replacement belt clip P N 26995 slide on belt clip for SSM transmitter 12 LECTROSONICS INC Micro Body Pack Transmitter Specifications Operating Freguencies Band A1 470 100 537 575 Band B1 537 600 614 375 Band C1 614 400 691 175 Band D1 691 200 767 975 export only Frequency Selection Steps Selectable 100 kHz or 25 kHz RF Power output Selectable 25 or 50 mW Pilot tone 25 to 32 kHz 5 kHz deviation Digital Hybrid mode Frequency Stability 0 002 Deviation 75 kHz max Digital Hybrid mode Spurious radiation 60 dB below carrier Equivalent input noise 120 dBV A weighted Input level Nominal 2 mV to 300 mV before limiting Greater than 1V maximum with limiting Input impedance Mic 300 or 4 5 k ohm selectable Line greater than 100 k ohm Input limiter DSP controlled dual envelope soft limiter with greater than 30 dB range Gain control range 44 dB digital control Modulation indicators Dual bicolor LEDs indicate modulation of 20 10 0 and 10 dB referenced to full modulation Audio Performance Digital Hybrid mode Frequency Response 70 Hz to 20 kHz 1dB Low frequency roll off 12 dB octave 70 Hz THD 0 2 typical SNR at receiver output SmartNR No Limiting w Limiting OFF 103 5 108
17. sonics Inc will at our option repair or replace any defective parts without charge for either parts or labor If Lectrosonics Inc cannot correct the defect in your equipment it will be replaced at no charge with a similar new item Lectrosonics Inc will pay for the cost of returning your equipment to you This warranty applies only to items returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of Lectrosonics Inc and the entire remedy of the purchaser for any breach of warranty as outlined above NEITHER LECTROSONICS INC NOR ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT SHALL BE LIABLE FOR ANY INDIRECT SPECIAL PUNITIVE CONSEQUENTIAL OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS EQUIPMENT EVEN IF LECTROSONICS INC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF LECTROSONICS INC EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE EQUIPMENT This warranty gives you specific legal rights You may have additional legal rights which vary from state to state NU N YU Y N LECTROSONICS 581 Laser Road NE Rio Rancho NM 87124 USA www lectrosonics com 505 892 4501 800 821 1121 fax 505 892 6243 sales lectrosonics com 18 November 2015
18. t for explicit control over bias voltage input resistance and audio polarity Press the AUDIO button to select the following parameters then use the UP and DOWN arrows for each item to set the values blAS bias voltage on the input selections 0 2 or 4 rES input impedance selections 0 300 ohms Lo approx 4 k ohms or HI approx 100 k ohms AP audio polarity aka phase selections P for positive n for negative reversed NOTE When you press AUDIO after setting the polarity the screen will leave this submenu and return to the In menu To return to this submenu press AUDIO repeatedly and scroll through the list again Frequency tuning step size in kHz selections 25 kHz or 100 kHz Rio Rancho NM S SSM Adjusting the Input Gain The two bicolor Modulation LEDs on the control panel provide a visual indication of the audio signal level entering the transmitter The LEDs will glow either red or green to indicate modulation levels as shown in the following table Signal Level 20 LED 10 LED Less than 20 dB 20 dB to 10 dB O Green 10 dB to 0 dB O Green O Green 0 dB to 10 dB O Red O Green Greater than 10 dB O Red O Red NOTE Full modulation is achieved at O dB when the 20 LED first turns red The limiter can cleanly handle peaks up to 30 dB above this point It is best to go through the following procedure with the transmitter in the standby mode so that n
19. ter and decoding it in the receiver yet still sending the encoded informa tion via an analog FM wireless link This proprietary algorithm is not a digital implementation of an analog compandor but a technique which can be accomplished only in the digital domain Since the RF link between transmitter and receiver is FM channel noise will increase gradually with in creased operating range and weak signal conditions however the Digital Hybrid Wireless system handles this situation elegantly with rarely audible audio artifacts as the receiver approaches its squelch threshold In contrast a purely digital system tends to drop the audio suddenly during brief dropouts and weak signal conditions The Digital Hybrid Wireless system simply encodes the signal to use a noisy channel as efficiently and robustly as possible yielding audio performance that rivals that of purely digital systems without the power noise and bandwidth problems inherent in digital transmission Because it uses an analog FM link Digital Hybrid Wireless enjoys all the benefits of conventional FM wireless systems such as excellent range efficient use of RF spectrum and long battery life LECTROSONICS INC Micro Body Pack Transmitter Battery Charging Battery Installation The transmitter operates from a 3 7 V rechargeable The battery compartment and door catch are designed battery that will provide about four hours of operation for simple and guick battery cha
20. tions on OFF PbAc power back on after power loss selections 0 stay turned off 1 turn back on bL back light duration selections 5 minutes 30 seconds on always on UP Button Menu Hold the UP button while powering up the unit Then press the AUDIO button repeatedly to scroll through and se lect the following settings bulleted Use the UP and DOWN arrows to select the available options under each setting e CP compatibility mode press the UP and DOWN arrows to select one of the following CP 400 CP CP 200 CP 100 CP 7 6 CP IFb In dYn In CoS In b6 In dPA In L In In otH In SEt StP 400 Series Digital Hybrid mode Mode 3 contact the factory for details 200 Series mode receivers such as UCR200 201 205D 210 211 100 Series mode UCR100 receiver Mode 7 contact the factory for details Mode 6 contact the factory for details IFB Series mode IFBR1 1a receivers Pr RF power output selections 25 50 In Input configuration press the UP and DOWN arrows to select one of the following no bias lo Z use for dynamic microphones 4v bias lo Z phase reversed use for Sanken COS 11 M152 and similar mics 2v bias lo Z use for Countryman B6 and similar mics 4v bias mid Z use for DPA lavaliere and similar mics no bias hi Z use for line level input 4v bias lo Z same as CoS but audio phase is not reversed for various mics Press the AUDIO button for manual setup of inpu
21. trol Search for the title LectroRM LECTROSONICS INC Micro Body Pack Transmitter IR infrared Sync An IR infrared link between an associated receiver and the transmitter can be used to shorten setup time and ensure that the correct settings in the transmitter are made The dome on the side panel of the transmit ter is the port used for the IR link The receiver is nor mally used to identify a clear operating freguency Once step size freguency and compatibility mode are set in the receiver the settings can be sent to the transmitter via this IR link IR port Place the transmitter close to the IR enabled receiver with the ports facing each other within a foot or two apart Send the settings with the trigger on the receiver If the settings are successfully transferred a confirma tion message will appear on the transmitter LCD m NOTE If a mismatch exists between the receiver and transmitter an error message will appear on the transmitter LCD stating what the problem is Rio Rancho NM Removable Belt Clip The belt clip may be removed by rotating it as shown and sliding it off the retaining tabs on the battery door Retaining When mounting the belt clip onto the battery door care fully align the openings with the retaining tabs on the door If they are not precisely aligned the door may not close and latch properly Align the openings and tabs precisely 44 SSM Accesso
22. vironment This device should be installed and operated so that its antenna s are not co located or operating in conjunction with any other antenna or transmitter Industry Canada Notices Per RSS 210 This device operates on a no protection no interference basis Should the user seek to obtain protection from other radio services operating in the same TV bands a radio licence is required Please consult Industry Canada s document CPC 2 1 28 Optional Licensing for Low Power Radio Apparatus in the TV Bands for details Per RSS Gen This device complies with Industry Canada s lecence exempt RSSs Operation is subject to the following two conditions 1 This device may not cause interference 2 This device must accept any interference including interference that may cause undesired operation of the device Consumer Alert for US Users FCC Order DA 10 92 Most users do not need a license to operate this wireless microphone system Nevertheless operating this micro phone system without a license is subject to certain restrictions the system may not cause harmful interference it must operate at a low power level not in excess of 50 milliwatts and it has no protection from interference received from any other device Purchasers should also be aware that the FCC is currently evaluating use of wireless mi crophone systems and these rules are subject to change For more information call the FCC at 1 888 CALL FCC TTY 1 888 TELL FCO
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