Telex TR-16 Satellite Radio User Manual
Contents
1. Qucstion Is the system more sensitive in any one particular direction Awer No the transmitter s antenna radiates equally in all directions but the signal is attenuated by your body walls or other surrounding objects The receiving antenna is essentially sensitive in all directions as well Oestion Can the receiver receive other transmis sions when the transmitter is turned off Aa Yes it can Telex systems operate in the VHF Band between 64 68 MHz However it is not susceptible to radio wave skip CB ers or standard FM radio transmissions It is on TV Broadcast chan nels 3 and 4 So it is best to use the channels in your system that are not on the TV broadcast chan nel in your area See Table 1 The frequency your system operates on is computer selected for least interference but there is no such thing as a 100 clear channel all the time If the system is going to be used in a permanent fixed location it should operate interference free un til such a time or date when someone else begins using the same frequency If the system is going to be moving among various locations you may run into occasional frequency conflicts Whenever the system is in use the transmitter should be left on to prevent the receiver from pick ing up outside interference Oe What is E D R Awer E D R stands for enhanced Dynamic Range companded audio E D R improves the sig nal to noise ratio providing much better aud2. Telex Operating Instructions Radiocom Wireless IFB TT 16 16 Channel Transmitter TR 16 16 Channel Receiver TELEX INTRODUCTION WHAT IS THE TELEX WIRELESS IFB SYSTEM Transmitter The transmitter generates and ampli fies a RF Radio Frequency carrier signal modu lates this carrier with the microphone signal and radiates the modulated RF carrier Receiver The FM VHF receiver is tuned to the fre quency of the transmitter The receiver picks up the radiated RF signal from the transmitter through the antenna and converts the RF signal into audio volt ages for use with an earphone headphone button receiver neckloop etc The receiver frequency must be matched to the transmitter frequency SOUND SOURCE RF CARRIER SIGNAL WHAT FREQUENCY BAND DOES THE TELEX SYSTEM OPERATE IN The Telex Systems feature a synthesized transmitter and a synthesized receiver operating in the VHF Band between 64 68 MHz See Table 1 for standard frequencies available Each transmitter channel can be utilized by any number of receivers in any given area Up to five si multaneous systems can be used in a given area EARPHONE Figure 1 Block Diagram of Typical Wireless IFB System OFTEN ASKED QUESTIONS O iiesticn Can more than one system be used si multaneously Aver Yes but never on the same frequency You will need to have different frequencies for every re ceiver transmitter combination
3. Turn the Monitor volume control all the way down counterclockwise After the audio input levels have been adjusted Stereo headphones with a 3 5 mm or 4 in plug can be plugged into the Monitor jack If you wish to monitor the audio program ma terial turn up the monitor volume control to the desired level The monitor control does not affect the transmitted audio level MULTIPLE SYSTEM INSTALLATIONS As with any radio device interference can occur at any time The frequencies offered are shared with other legitimate users The severity of interference varies with the distance to the interfering station Multiple systems further complicate installations The follow ing steps are suggested in order to achieve best re sults in your installation 1 In order to determine whether your selected fre quencies have minimum interference Telex rec ommends that you first temporarily install the receivers in your proposed setting and monitor the channel for interference To do this with fresh batteries installed turn on your receiver but DO NOT turn on any other receiver or trans mitter at this time If audible interference is pres ent this may indicate another user on the channel Monitoring should be repeated for each channel that you propose to use DO NOT use channels that have interference Set your transmitter s to channels with no or minimum interference Each transmitter must be set to a separate frequency For best res
4. Connector Accepts bal anced two wire Telex RTS channel 1 or RTS channel 2 NOTE RTS channel 2 1s compatible with Balanced Clear Com Intercom Systems Audio a PINS RadioCom amp Antenna 1 4 RTS 2 Uipadianiced Unbalanced Audio 14 Input Con WIRELESS IFB TRANSMITTER FCC ID B5DM524 nector IC 1321A TT16 S N XXXXXX Telex Communications Inc Made in USA P N 804182 Antenna Jack Accepts telescoping antenna supplied Power Input Jack Accepts any source of 12 15 VAC DC 300 mA minimum Figure 4b Operating Features TT 16 Rear Panel RF POWER HIGH CHANNEL 8 f UNBALANCED 10 5 0 3 6 AUDIO LEVEL 804B d 0 2 ca BALANCED AUDIO LEVEL 36dB AUDIO LEVEL RTS 1 RTS2 TELEX FREQ 65 9 MHz EDR 3 4 8 2 Ea Channel Indicator 6 Unbalanced Audio Level Audio Input Meter 7 Balanced Audio Level Frequency Indicator 8 Balanced Input Selection for RTS 1 RTS 2 Telex 9 Lock Out Indicator RF Transmit Power High when lit Norm when not Figure 5 LCD Display Functions Clear Com is a registered trademark of Clear Com Intercom Systems Inc TT 16 Specifications Audio Input Female XLR RTS 1 Selected RTS 2 Selected Telex Selected Line impedance 200 Q Level adjustable Line impedance 200 Q Level adjustable Line impedance 300 Q Level adjustable Unbalanced Audio Input 10K Q input impedance 10 mV 1 0 VRMS input range 5
5. audio input will not be used with the Unbalanced Audio Level flashing use the DOWN button to set the level to OFF and press set to go to Balance Input Selection If the Unbalanced input will be used connect the in put now and apply audio content With the audio content playing and Unbalanced Audio Level flashing watch the audio meter The peak signal should not go above the 0 dB segment use the UP and DOWN buttons to adjust the input level so that the loudest input lights up the O dB segment When the level is set press the SET button and one of the input options will flash Balanced Intercom Input and Level Adjustment With the Balanced Intercom Input selection flashing RTS1 RTS2 or TELEX Use the UP and DOWN buttons to scroll to the correct input With the cor rect input displayed press SET and the Balanced Audio Level indicator will flash If the intercom audio input will not be used with one of the Balanced Input options flashing press SET so the Balanced Audio Level is flashing Use the DOWN button to set the level to OFF and press SET to end the setup session When OFF is selected Balanced Audio Level will not be dis played on the screen If the Balanced Input Selection will be used then connect the input and apply audio content With the audio content playing and Balanced Audio Level flashing watch the audio meter The peak signal should not go above the 0 dB segment use the UP and DOWN buttons to ad
6. 0mW in Hr approx 5mW in Low RF Power Switch AGC Range Signal to noise Ratio Normal EDR Enabled Pre Emphasis Maximum Deviation ccccccccscsccccccececececccccscccecs Frequency Control Crystal Available Frequencies Max Transmitter Output Power Power Requirements Dimensions E EAA A E E 25 kHz 12 15V AC or DC 300 mA 7 YVa W x 1 3 4 H x 6 7 8 D B5DM524 EQUIPMENT SET UP AND OPERATION TT 16 SYNTHESIZED TRANSMITTER UNPACKING Unpack your Wireless IFB system If there are any damages or shortages refer to the War ranty Service Information card TT 16 TRANSMITTER LOCATION Select a suit able location for the TT 16 Transmitter Try to keep a clear unobstructed path between the transmitter and receiver and allow plenty of free space around the transmitter antenna ANTENNA CONNECTIONS Connect the tele scoping antenna to the rear panel ANTENNA jack For best results the antenna should be vertically aligned Tighten the knurled ring to hold the antenna in place and extend the antenna to full length _6 REAR PANEL Figure 6 Antenna Connection POWER CONNECTION Plug the AC power adapter into an electrical outlet Plug the other end of the cord into the power input jack on the rear panel of the TT 16 Figure 7 Connecting Power SYSTEM SET UP All of the channel and input selection functions are accessed from the front panel Press SET button once to be
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8. ed at medium to high input levels Reduce audio gain on transmitter by adjusting the gain controls HISS System seems to produce a hiss which is undesirable Check the gain settings on the transmitter and the volume control on the receiver They may be too low DROPOUTS When moving around the area in which you will be using the system there seem to be locations where the signal swooshes or completely disappears Make sure the antenna is connected and fully extended Follow the location suggestions on page 15 Change the location of the transmitter antenna or avoid the bad area with the receivers INTERFERENCE System picks up signals other than the TT 16 Transmitter Make sure the Telex TT 16 is turned on this will usually eliminate the interference signal If problem persist with the transmitter ON try changing to another channel REDUCED DISTANCE System doesn t oper ate as far as it once did System doesn t operate as well as you think it should Receiver Battery is possibly in need of replace ment Transmitter antenna possible located in correctly Receiver not tuned properly BATTERIES DON T LAST If using throw away batteries make sure they are alkaline If using nickel cadmium or nickel metal hydride batteries make sure they were fully charged when yo are using them and fully drained when you are done before recharging them HUM Audio System emits hum or buzz thru spea
9. em in the battery compart ment as illustrated in Figure 9 BELT CLIP For additional information refer to the Battery In formation Section NOTE If the unit is to be stored for any length of time make sure you remove the batteries from the unit BATTERY ORIENTATION BATTERY COMPARTMENT COVER Figure 9 Battery Installation TR 16 BATTERY INFORMATION General Alkaline Batteries Improper battery selection use installation and care Alkaline batteries such as Mallory s DURACELL are the cause of numerous wireless system failures or Eveready s ENERGIZER provide the most reli able operation in wireless transmitters and receivers The use of low cost carbon zinc batteries is NOT RECOMMENDED ENERGIZER is a registered trademark of Union Carbide Corporation DURACELL is a registered trademark of Duracell Inc ANTENNA INFORMATION Antenna Alignment Antenna Placement Proper antenna placement probably has the most ef fect on your TELEX Wireless System s overall per formance Following the suggestions that follow should result in dropout free performance Figure 10 Antenna Alignment Good and Bad Figure 11 Distance Between Transmitter and Receiver Keep the distance between the transmitter and the receiver s as short as possible The greater the dis tance the weaker the signal sii Make sure the signal path bet
10. epts a 0 140 inch 3 5 mm diameter miniature plug A va riety of earsets or headphones can be plugged into this jack for listening Belt Clip The belt clip supplied is detachable by spreading the wire apart at the tops and removing one side of the clip form the case and then the other BATTERY COMPARTMENT BELT CLIR BATTERY ORIENTATION BATTERY COMPARTMENT COVER Figure 3 Operating Features TR 16 SPECIFICATIONS TR 16 16 Channel Synthesized Receiver Temperature Range 32 to 122 degrees F O to 50 degrees C Supply Voltage 2 3 Volts 2 AA Batteries Battery Life 20 Hrs Alkaline 16 Hrs NimH 8 Hrs NiCad Frequency Response Sensitivity 12 dB SINAD 66 1 MHz Distortion Audio Output 10 Distortion Voltage Controls and Connections Volume OFF ON Switch Treble Control Switch Channel Selection Switch Audio Output Jack TT 16 SYNTHESIZED TRANSMITTER General Description The Telex TT 16 is a base station transmitter which operates in the 64 68 MHz band and accepts a wide range of audio input levels Operating Features TT 16 Front Panel 1 Power Button Must be held in for 1 second to turn off Headphone volume adjustment Headphone Monitoring Jack SET Button Back Lit LCD Display UP and DOWN Adjustment Buttons NN Nr A W N Figure 4a Operating Features TT 16 Front Panel _4 nA A WO N e Enhanced Dynamic Range Indicator TT 16 Rear Panel 1 XLR Input
11. gin System Setup Whenever a function is flashing the UP and DOWN buttons can be used to adjust it Once set the next function will start to flash To access a specific function press SET until the function is flashing the features are accessed in the following order Channel RF Power Output Unbalanced Level Adjust Balanced Input RTS1I RTS2 Telex Balanced Level Adjust Channel Selection Turn the TT 16 on by touching the POWER button The TT 16 is designed to return to on if power is disconnected while the unit is on This is so the unit can be switched on and off with a power strip or rack power The LCD display will light up and show the Chan nel Audio Meter Frequency and E D R if it has been enabled Press the SET button once and Chan nel letter will flash Use the UP and DOWN Arrow buttons to select the desired channel 1 9 and A H Press SET when the desired channel is displayed and the channel is set The channel letter will stop flashing and the RF Power indicator will flash RF Power Selection While the RF Power indicator is flashing press the UP ARROW for HIGH and DOWN for NORM the RF Power line will flash quickly and will disappear when SET is pressed NORM power _7 should be used for small to medium sized venues and whenever multiple systems are being used Press SET when the power is set and the Unbalanced In put level will flash Unbalanced Input And Level Adjustment If the unbalanced
12. io qual ity iion Can the TT 16 and TR 16 be used with existing TR 34 and TT 44 products Anvet Yes as long as the E D R feature is dis abled on the TT 16 and TR 16 AVAILABLE FREQUENCIES Channel Freq in MHz Broadcast TV Channel 64 5 64 7 64 9 65 1 65 3 65 5 65 7 65 9 66 1 66 3 66 5 66 7 66 9 67 1 67 3 w GR ee a ta eee ate ce ae BS PGS Oe ee BS SBS BS BS SS B S BS GS Glao S SD DE G po 67 5 Table 1 Frequencies Available TR 16 SYNTHESIZED RECEIVER General Description TR 16 The Telex TR 16 Receiver is a component of a sys tem which operates on sixteen 16 user selectable channels in the 64 to 68 MHz frequency band The receivers are designed to be used with the Telex TT 16 Transmitter Operating Features Volume OFF ON Control This thumbwheel con trol serves as both an off on switch and as a volume control The receiver is turned off when the control is in the extreme counter clockwise position when viewed from the rear and the volume is loudest when the control is in the extreme clockwise posi tion SET SWITCH BUTTON HEADPHONE JACK VOLUME OFF ON CONTROL TREBLE CONTROL Treble Control A push button treble control is pro vided to enhance higher frequency audio when the button is engaged indicated by 6 Headphone Jack The receiver jack acc
13. just the input level so that the loudest input lights up the 0 dB segment When the level is set press the SET button and the Setup Session will end NOTE The TT 16 will operate with both Unbal anced and Balanced inputs active at the same time Enhanced Dynamic Range E D R Operation The Telex TT 16 Transmitter is equipped with E D R Enhanced Dynamic Range companded au dio This mode greatly improves the Audio Signal to Noise Ratio when used with the Telex Model TR 16 receiver The E D R mode must be selected on both the transmitter and receiver to be effective If using the TT 16 with TR 34 IFB units E D R must be turned off 1 To engage the E D R function turn the TT 16 off with the power switch The power switch must be held for 1 second to turn unit off 2 Press and hold the SET button while you turn the TT 16 back on The E D R symbol will be dis played in the lower right corner to indicate the mode is active 3 Repeat the procedure to disable the E D R func tion Lock Out The TT 16 SET button can be locked to prevent E D R activation and unintended channel changes 1 To engage the Lock Out Feature press the UP and DOWN buttons at the same time and hold them down for two seconds 2 The padlock symbol will appear and the set but ton is disabled 3 To unlock the system press the UP and DOWN buttons and hold them for two seconds or until the padlock symbol disappears Audio Monitor
14. kers and sound enhancement receiver Locate Transmitter away from the audio equip ment Transmission sounds compressed on TR 16 E D R function may be engaged on the TT 16 See setting E D R function on page 9 The E D R feature can only be used with the TR 16 and must be active on both transmitter and re ceiver to be effective SET button does not work cannot change chan nel Lock Out is engaged press and hold UP and DOWN buttons until the padlock symbol disap pears ee FCC INFORMATION The Telex TR 16 receiver is authorized under part 15 of the FCC Regulations Changes or modifica tions to this equipment could void the user s authority to operate the equipment The Telex Model TT 16 transmitter is authorized under Federal Communications Commission and Industry Canada Rules Licensing of the Transmitter if required is the users responsibility and licensability depends upon the users classification and frequency selected CAUTION Changes or modifications made by the user could void the user s authority to operate the equipment Operation is subject to the following two conditions 1 This device may not cause interference and 2 This device must accept any interference including interference that may cause undesired opera tion of the device ACCESSORIES CES Z complete TeleThin Announcer Earset axe ue ania aes 8003 18000 Gancluces TRV 04 125 ohm TeleThin Receiver CMT 98
15. ned off 1 To engage the E D R function turn the TR 16 off with the volume control thumb wheel 2 Press and hold the SET button while you turn the TR 16 back on The E D R symbol will be dis played in the lower right corner to indicate the mode is active 3 Repeat the procedure to disable the E D R func tion Lock Out The TR 16 SET button can be locked to prevent E D R activation and unintended channel changes The High Frequency Emphasis button will remain active at all times for the convenience of the user 1 To engage the Lock Out Feature press the SET and buttons at the same time and hold them down for 5 seconds 2 The padlock symbol will appear and the set but ton is disabled 3 To unlock the system press the SET and but tons and hold them for 5 seconds or until the padlock symbol disappears SET SWITCH BUTTON HEADPHONE JACK TREBLE CONTROL VOLUME OFF ON CONTROL Low Battery Indication 1 When there is approximately 10 of the battery life left an animated battery symbol will flash al ternately with the channel letter in the LCD dis play 2 When there is only 5 battery life left the bat tery symbol will constantly flash in the display Low Battery Display BATTERY REPLACEMENT The TR 16 Receiver uses two 2 AA batteries When the batteries are low the sound will be dis torted Replace weak batteries with two fresh AA batteries and position th
16. ults when using multiple transmitters each transmitter should be installed separately as far as possible from the others 3 Turn on the transmitter s with an active audio input Test walk a receiver through the expected listening area to verify coverage The system should now be ready for use TR 16 SYNTHESIZED RECEIVER Keep a clear unobstructed path between the trans mitter and receiver antennas for a clear transmis sion 1 2 1 Channel Display 1 9 through A H and low battery indicator 2 Lock Indicator see Change Lock Out 3 High Frequency Emphasis Indicator on when symbol is showing 4 Enhanced Dynamic Range Indicator Figure 8 TR 16 Display Channel Selection 1 Turn the receiver on A channel letter will show in the display 2 Press the SET button once and the Channel indi cator will flash 3 Press the button and the Channel will scroll up match the channel to the transmitter channel being used TT 16 TT 44 4 Press SET the channel indicator will stop flash ing and the channel is set Enhanced Dynamic Range E D R Operation The Telex TT 16 transmitter is equipped with E D R Enhanced Dynamic Range companded au dio This mode greatly improves the Audio Signal to Noise Ratio when used with the Telex Model TR 16 receiver The E D R mode must be selected on both the transmitter and receiver to be effective If using the TR 16 with a TT 44 IFB Transmitter E D R must be tur
17. ween the transmitter and receiver s 1s unobstructed You should always be able to visually locate the antenna of the trans mitter at all times SIGNAL REACHES ANTENNA AT FULL STRENGTH WITH NO OB STRUCTIONS Figure 12 Keeping Site Clear to Antenna Attempting to operate the sound enhancement sys tem through or around walls ceilings metal objects etc will reduce system range and performance SIGNAL REFLECTION OFF A METAL OBSTRUCTION CAUSES REDUCED SIGNAL AND MULTIPATH Figure 13 Operating Through Obstruction _ 12 DO NOT Mount the transmitter on or next to metal such as beams walls with metal studs etc This will detune the transmitter antenna which can result in loss of signal at the receiver LOCATION 7 IS OK DE OWO OOJ LOCATION IS BAD 2 peba Go titan Ru E boas So Figure 14 Transmitter Antenna Placement TROUBLESHOOTING Reread the sections of this manual to make sure you have completed system set up properly If you are unable to solve the problem contact the dealer from whom you purchased the system for as sistance PROBLEM SOLUTION DISTORTION System s audio quality seems distort
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