USER MANUAL - Audmax Broadcast
Contents
1. Impedance 10k Ohm electronically balanced Common mode rejection gt 40dB Maximum input level 26dBu Nominal input level 4 dBu Frequency response 20Hz 15kHz 3dB variable via HC and LC filters Connectors XLR type 3 pin female Gain range receive control 40dB Manual page 7 RECEIVE Impedance lt 50 Ohm electronically balanced Common mode rejection gt 40dB Maximum output level 26dBu Nominal output level 4 dBu Bandwidth to telephone line 250Hz 4kHz 3dB ref 1 kHz Telephone line impedance Nominally 600 ohm Telephone line impedance range 300 ohm to 1500 ohm Connectors XLR type 3 pin male Gain range send control 6dB to 20dB IO GENERAL Power supply 115v 230 v AC 50 60Hz factory set NOT do this yourself Power consumption 10VA Maximum Dimensions 1 HE front panel 482x44mm Frame 430x41x175mm width x height x depth Weight 2 2 kg net excl packing Manual page 8 INSTALLATION Ce ee Alia PAG J KA LINE OUTLET PHONE jE PHONE APPLIANCE CONTROL SIGNALS AUDIO MIXER Manual page 9 DECLARATION OF CONFORMITY Manufacturers Name DER Electronica Weesp b v Manufacturers Address Rijnkade 15B 1382 GS Weesp The Netherlands declares thatthe product TELEPHONE HYBRID 2 Which refers to this declaration is in accordance with the following standards or standardized documents EN 50081 1 EN 55013 A 12 EN 50082 1 EN 55022 EN 60065 EN 61000 3 2 EN 55020 EN 61000 3 32. SETTING UP PROCEDURE D r CONNECT Le ne NECENVE seno 3 ome Efa A DR o 3 on come calles ce Connect the two wires of the telephone line s wall unit to the RJ 11 connector labeled LINE and connect the telephone appliance itself to the Hybrid s RJ 11 connector labeled PHONE Note that to originate calls a local phone must be connected to the system Now the hybrid is interfaced fully balanced between your telephone appliance and its connection to the outside world The hybrid can now split the send and return signals Now connect the hybrid s balanced audio input SEND on XLR male to a preferable balanced mixer output of around 4dBu This output has to be the mix of all signals except the signal coming from the hybrid itself to avoid feedback An Aux output will do or in broadcast mixers a clean feed is the best The balanced RECEIVE output of the Hybrid has to be connected to a line input of the mixing console Note that this signal is NOT to be send to the output where the Hybrid s input is connected to So in case of use of an Aux send this local channel Aux send needs to be turned off In case of use of a clean feed buss this input channel needs to be disconnected from the clean feed buss Turn the LC control fully counter clockwise and the HC control fully clockwise Position RECEIVE and SEND controls in their mid position If a local phone is connected originate a call to a remote side If no local phone is present
3. Supplementary Information The products herewith complies with the reguirements of the EMC Directive 89 336 EWG and 73 23 EWG as amended by the CE Marking Directive 93 68 EEC 1993 Duco de Rijk August 2003 president D amp R Electronica Weesp b v Rijnkade 15 B 1382 GS WEESP The Netherlands Manual page 10 PRODUCT SAFETY This product is manufactured with the highest standards and is double checked in our quality control department for reliability in the HIGH VOLTAGE section CAUTION Never remove any panels or open this equipment No user serviceable parts inside Equipment power supply must be grounded at all times Only use this product as described in user manual or brochure Do not operate this equipment in high humidity or expose it to water or other liquids Check the AC power supply cable to assure secure contact Have your equipment checked yearly by a qualified dealer service center Hazardous electrical shock can be avoided by carefully following the above rules PLEASE READ THE FOLLOWING INFORMATION Especially in sound equipment on stage the following information is essential to know An electrical shock is caused by voltage and current actually it is the current that causes the shock In practice the higher the voltage the higher the current will be and the higher the shock But there is another thing to consider and it is resistance When the resistance in Ohms is high between two poles the cur
4. down a single telephone line Each hybrid has a telephone line connection a handset connection and separate connectors for audio input and output from a broadcast mixer or other professional audio source A large proportion of D amp R hybrids are used in radio and television broadcasting applications allowing external callers to be connected to the studio mixing console Most of the other units are supplied to communication operations allowing extremely effective conversion between 4 wire audio circuits and Standard telephone lines Front panel lay out 551 CONNECT uc mo receive SENO BD TELEPHONE wy de wg ty HYBRID Ir s 9 gt 9 9 DR gt i SAE gt 2 a Line connect switch to connect and disconnect calls from the telephone line AET BUTTON It can be remotely driven by connecting a switch to the GPIO sub D connector LC Variable Low Cut filter to filter out unwanted low frequency noise HC Variable High Cut filter to filter out unwanted high freguency noise Ducking Indicates when caller s signal is reduced RECEIVE Level control for incoming signal from caller SEND Level control for outgoing signal to caller Manual page 3 Back panel lay out Power Power Cord LINE PHONE C BALANCE R BALANCE GPI AUDIO GPIO RECEIVE SEND SYSTEM DESCRIPTION a an Te mm Des al mains power switch The unitis powered by a removable IEC type power cord An internal switch is provided for 115 230V
5. someone ata remote site must call you When a call comes in the large ring BUTTON on the left side of the unit lights up green in the rhythm of the ring When the line is picked up by pushing the button it turns into red When it Starts blinking red the line connection is lost If you are at the originating side pres the CONNECT button to connect the Telephone Hybrid 2 to the phone line after the call has been established The phone will be disconnected now The caller will now hear the Signal send to the Hybrid and the output of the Hybrid will present the callers signal only with the send Signal heavily attenuated To achieve the optimum attenuation you need to adjust the C and R balance first This is how it is performed 1 Check if the telephone connection is established and all connections to the mixing console are correctly wired Now activate a CUE PFL SOLO button of the mixing console channel where the return signal of the Hybrid is connected to Y ou will faintly hear the send signal coming out of the mixing console Adjust the R Balance for minimum feed through of the mixers send signal Listen now which mini dip switch gives a further reduction of the return signal Maybe it is good to re adjust the R balance after having selected another dip switch Repeat steps 3 and 4 until no further improvement are achieved Manual page 5 DUCKING The Hybrid has an automatic gain adjustment of the incoming signal from the caller when th
6. TELEPHONE HYBRID 2 USER MANUAL Dear Customer Thank you for choosing the Telephone Hybrid 2 This time you are not faced with a huge manual because it is simply not necessary because of the natural recognition of all functions on the user interface All functions are self explanatory and you will certainly appreciate the ergonomics of this design We are confident that you will be using the Telephone Hybrid for many years to come and wish you a lot of success with your operation With kind regards Duco de Rijk PRESIDENT DER ELECTRONICA WEESP B V Rijnkade 15B 1382 GS WEESP HOLLAND The Netherlands Phone 0294 418 014 Fax 0294 416 987 Website http www d r nl E mail info d r nl Manual page 2 D amp R s newest Telephone Hybrid 2 is the active version of the well known passive one successfully sold over the last 5 years Its concept originates from many demands for a more sophisticated hybrid with more features The Telephone Hybrid 2 is an analogue unit with digital control and features like ducking making intelligibility a lot better in broadcast What is a telephone hybrid Telephone hybrids provide the interface between professional audio equipment and the public telephone network They provide protection for your equipment and the public telephone lines allowing for varying line signals and line conditions Automatically canceling out the unwanted signal they also facilitate two way communication
7. e presenter speaks This feature both improves the side tone reduction and gives the presenter a level advantage over the caller when he interrupts the caller When both parties are speaking the caller s signal is reduced then INPUTS OUTPUTS SEND to caller XLR FEMALE TYPE CONNECTION Pin 1 Screen Audio ground Pin 2 Phase Audio input Pin 3 Non phase Audio input RECEIVE from caller XLR MALE TYPE CONNECTION Pin 1 Screen Audio ground Pin 2 Phase Audio output Pin 3 Non phase Audio output SUB D 9 AUDIO GPIO GPIO SEND RECEIVE FUNCTION CONNECTION Pin 1 Receive from caller Audio output Pin 6 Receive from caller Audio output Pin 2 Receive from caller Audio ground Pin 7 Send to caller Audio input Pin 3 Send to caller Audio input Pin8 Send to caller Audio ground Pin 4 Logic ground 47 Ohm to ground Pin 9 GPI 5volt TTL input Pin 5 GPO Open collector to ground Manual page 6 GPI GPI FUNCTION CONNECTION Tip Pull down 47 ohm to ground Ring Pull up 5 volt via 10kohm Sleeve No Not connected PHONE PHONE RJ 12 FUNCTION CONNECTION Pin 1 n c Pin 2 A telephone line In out Pin 3 B telephone line In out Pin 4 n c LINE LINE RJ 12 FUNCTION CONNECTION Pin 1 n c Pin 2 A telephone line In out Pin 3 B telephone line In out Pin 4 n c SPECIFICATIONS Audio Inputs SEND
8. ence of above 10 volts is not unusual in improperly wired buildings it can possibly be as high as 240 volts Although removing the ground wire sometimes cures a system hum it will create a very hazardous situation for the performing musician Always earth all your eguipment by the grounding pin in your mains plug Hum loops should be only cured by proper wiring and isolation input output transformers Replace fuses always with the same type and rating after the equipment has been turned off and unplugged If the fuse blows again you have an equipment failure do not use it again and return it to your dealer for repair And last but not least be careful not to touch a person being shocked as you yourself could also be shocked Once removed from the shock have someone send for medical help immediately Always keep the above mentioned information in mind when using electrically powered equipment Manual page 12 TELEPHONE HYBRID 2 SERVICE MANUAL
9. rent will be low and vice versa All three of these voltage current and resistance are important in determining the effect of an electrical shock However the severity of a shock primarily determined by the amount of current flowing through a person A person can feel a shock because the muscles in a body respond to electrical current and because the heart is a muscle it can affect when the current is high enough Current can also be fatal when it causes the chest muscles to contract and stop breathing At what potential is current dangerous Well the first feeling of current is a tingle at 0 001 Amp of current The current between 0 1 Amp and 0 2 Amp is fatal Imagine that your home fuses of 20 Amp can handle 200 times more current than is necessary to kill How does resistance affect the shock a person feels A typical resistance between one hand to the other in dry condition could well over 100 000 Ohm If you are playing on stage your body is perspiring extensively and your body resistance is lowered by more than 50 This is a situation in which current can easily flow Manual page 11 Current will flow when there is a difference in ground potential between eguipment on stage and in the P A system Please do check if there is any potential between the housing of the mikes and the guitar synth amps which will be linked by your body on stage Imagine a guitar in your hand and your lips close to the mike A ground potential differ
10. selection RJ 12 connector to connect with the public telephone network RJ 12 connector to connect with a handset 8 pole mini dip switch to select the optimum side tone attenuation Internal potentiometer to adjust for optimum side tone attenuation J ack connector for remote control 1 1 for DER s Scorpius console A combination of audio in outputs and logic for DGR s Lyra console Male XLR to be connected to input of the mixer Female XLR input to be connected to Mix Minus Clean feed N 1 output of the mixer A large ring button enables you to pick up the line from the unit itself or from your mixer when connected via its GPIO to the telephone Hybrid When a call comes in it lights up green in the rhythm of the ring When the line is picked up by pushing the button it turns into red When it starts blinking red the line connection is lost Both levels of receive and send can be adjusted to suit your requirements Incoming signals can be tailored by the variable high and low cut signal while talking to people calling the station A ducking system reduces the incoming signal while talking to people calling the station to provide for an improved intelligibility HIGH LIGHTS Auto Ducking Active balanced interfacing Variable high and low cut filters Industry standard connectors Superb audio separation Externally adjustable R and C balance Remotely controllable GPIO interfacing with mixing consoles Manual page 4
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