USER MANUAL - Audmax Broadcast
Contents
1. Maximum input level 6dBU 0909000 Nominal input leve 6dBu 090900 Frequency response 300Hz 5kHz Connectors balanced STEREO JACK CINCH Manual page 6 Impedance lt 2kOhm electronically balanced Common mode rejection gt 30dB Maximum output level 6dBU 09090900 Nominal output level 6dBU Bandwidth to telephone line 250Hz 4kHz 3dB ref 1 kHz Telephone line impedance Nominally 600 ohm Telephone line impedance 300 ohm to 1500 ohm range Connectors OOo balanced STEREO JACK CINCH DOS O ER GENERAL Distortion Less than 0 1 OdBu out Power supply From telephone line Power consumption Less than 5mA Dimensions 110x110x40mm Width x Depth x Height Weight 700 g net including packing o aeaonay bie SETTING UP PROCEDURE When all connections are made you can dial the caller to whom you want to talk If this connection is made you connect the caller to the mixing console by pushing the HOOK switch Now listen by means of a PFL CUE switch on your mixer to the caller and adjust while talking the Side tone trimmer so that the outgoing signal your voice is best attenuated Note the line balancing to your own telephone station has to be performed one time only when no changes are made to the telephone system in your place The maximum attenuation will be between 20 to 26 dB Note This also depends upon the characteristics of the telephone line system on location2. Hook The function of the HOOK switch is to connect the hybrid to the telephone line instead of the phone itself which can be switched off depending upon the jumper J7 8 setting inside the TelCom unit Default factory setting is that the Phone is not switched off The green led indicates that a connection has been made Manual page 7 Call When a call is coming in this LED lights up indicating a call is coming in When the Ringer is not switched off this can be done by a small screwdriver pushing down the hidden switch underneath the hole labeled Ringer off you will hear a ringer melody coming from the TelCom unit until the moment the Hook switch is pushed Now the caller is connected to the TelCom unit Ringer off Behinf this small hole you will find switch that can switch off the internal ringer small speaker This can be done by a small screwdriver pushing down the hidden switch underneath the hole labeled Ringer off Send Behind this small hole in the front panel there is a trimmer that adjust the outgoing level to the caller coming from the mixer Adjustment has to be performed once in cooperation with a caller that can give feedback about the level she he hears Receive Behind this small hole in the front panel there is a trimmer that adjust the incoming level from the caller going to the mixer Adjustment has to be performed once in cooperation with a caller that can give feedback about the level she he talks
3. into the phone This adjustment has to be a balance between receive level on the TelCom unit and input gain of the connected mixer Sidetone This hidden trimmer needs to adjusted to a position where the outgoing level is minimally heard in the receive level coming from the caller Manual page 8 Conformity declaration according ISO IEC 22 and EN 45014 Name Manufacturer D amp R Electronica Weesp b v Address Manufacturer Rijnkade 15B 1382 GS Weesp The Netherlands declares that the product Name product TELEPHONE HYBRID Model nummer TELCOM Product options All Complies with the following product specifications Security EN 60950 1988 A1 A2 EMC CISPR 22 1985 EN 55022 1988 klasse B EN 50082 1 1992 IEC 801 2 1991 prEN 55024 2 1992 3kV CD 8kV AD IEC 801 3 1984 prEN 55024 3 1991 3 V m IEC 801 4 1988 prEN 55024 4 1992 0 5kV signal cables 1 kV power cables Additional info The product complies herewith to the following rules Low voltage 73 23 EEG EMC rules 89 336 EEG The product has been tested in normal users conditions Manual page 9 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
4. 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 10 Ta Com SERVICE MANUAL Upon request
5. Most of the other units are supplied to communication operations allowing extremely effective conversion between 4 wire audio circuits and standard telephone lines Specs AUDIO PROGRAM IN AND OUT Connectors Jack stereo 6 3mm and Cinch connectors Input impedance 5kOhm transformer balanced Output level 40 up to 6 dBu Output impedance 2kOhm transformer balanced Noise on Receive output less than 82dB A weighted GENERAL DATA Power supply Powered by telephone line Dimensions Front 240x44mm Depth 110mm Weight 725grams LINE INTERFACE Connector RJ11 Nominal input level 6dBu Nominal output level 6dBu Compensation Mode fully electronic Impedance 600 Ohm Depends on telephone line characteristics Manual page 3 Front panel lay out Hook Line connect switch to connect and disconnect calls from the telephone line At the same time a LED lights up Call LED 0 LED When a call is coming in this LED When a call is coming in this LED lights up indicating a call is coming in up indicating a call is coming in Ringer off This hidden switch allows you to turn the internal buzzer off by inserting a small screwdriver Send This trimmer adjust the level of the audio sent to the telephone caller which is connected to the SEND jack cinch connector on the rear panel This trimmer adjust the level of the audio coming in from the telephone Receive caller which is connected to the RECEIVE jack cin
6. Ta Com USER MANUAL Dear Customer Thank you for choosing the TelCom Telephone Hybrid 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 TelCom for many years to come and wish you a lot of success in your application With kind regards Duco de Rijk President D amp R 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 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 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 D8R hybrids are used in radio and television broadcasting applications allowing external callers to be connected to the studio mixing console
7. back An Aux output will do or in broadcast mixers a clean feed is the best The TelCom stereo jack or Cinch connector labeled SEND has to be connected to a line level input of your mixing console NOTE The output of the Hybrid can be connected balanced via the jack connector or unbalanced via the Cinch connectors Please be aware that the jack interrupts the Cinch connection Manual page 5 WIRING SCHEME PHONE RJ 11 connector to connect with a handset LINE wall RJ 11 connector to connect with the public telephone network Balanced Stereo jack or unbalance Cinch output to be connected to SEND A a line level input of the mixer RECEIVE Balanced Stereo jack or unbalanced input to be connected to Mix Minus Clean feed N 1 or Aux output of the mixer CONNECTION WIRING OF BOTH PHONE AND LINE RJ 11 CONNECTORS PHONE WALL RJ 11 FUNCTION CONNECTION ts Pini a Pin2 A telephone line Infoutt 00909000 Pin3 B telephone line sf Infout 00909000 Ping a mea WIRING OF AUDIO IN AND OUTPUTS STEREO JACK TO LINE TYPE CONNECTION INPUT TO CLEANFEED OUTPUT Screen Screen ground Audio ground Ring Non phase cold Audio Tip Phase hot Audio MONO CINCH TO LINE INPUT TO CLEANFEED OUTPUT Screen Non phase cold ground Audio ground Tip Phase hot Audio SPECIFICATIONS Audio Inputs RECEIVE a Impedance 5k Ohm electronically balanced j Common mode rejection gt 20dB
8. ch connector on the rear panel Side tone tone With this trimmer you can With this trimmer you can adjust the side tone to a minimum gt the side tone to a minimum Manual page 4 Back panel lay out RECEIVE Balanced Stereo jack Cinch output to be connected to line input of a mixer SEND Balanced Stereo jack Cinch input to be connected to Mix Minus Clean feed N 1 or Aux output of the mixer PHONE RJ 11 connector to connect with a telephone set LINE wall RJ 11 connector to connect with the public telephone network USER MANUAL The D amp R TelCom telephone Hybrid is designed to create an easy connection between the public telephone line and your studio equipment The Hybrid has to be inserted between your telephone and the telephone line Connect the two wires of the telephone line s wall unit to the RJ 11 connector labeled LINE wall and connect the telephone appliance itself to the Hybrid s phone output on the RJ 11 connector labeled PHONE This can be done with standard available cable assemblies from your local phone shop 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 labeled RECEIVE to a preferable balanced output of around 4dBu This output has to be the mix of all signals except the signal coming from the hybrid itself to avoid feed
9. 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 current 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
10. 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 Current will flow when there is a difference in ground potential between equipment 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 difference 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 equipment 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
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