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1. but not all areas the sum of the RENs should not exceed 5 0 To be certain of the number of devices that may be connected to the line as determined by the total RENs contact the local telephone company 3 Repair Instructions If it is determined that your telephone equipment is malfunctioning the FCC reguires that it not be used and that it be unplugged from the modular outlet until the problem has been corrected Repairs to this telephone equipment can only be made by the manufacturer or its authorized agents or by others who may be authorized by the FCC For repair procedures follow the instructions outlined under the warranty section of the manual 4 Rights of the telephone company If telephone equipment is causing harm to the network the telephone company may temporarily discontinue your telephone service If possible they ll notify you before they interrupt service If advanced notice isn t practical you ll be notified as soon as possible You ll be given the opportunity to correct the problem and you ll be informed of your right to file a complaint with the FCC Your telephone company may make changes in its facilities eguipment operations or procedures that could affect the proper functioning of your JK Audio product If such changes are planned you ll be notified by your telephone company 11 AutoHybrid is covered by a 2 year warranty to be free from defective workmanship and materials In the event that the AutoHy
2. AutoHybrid Auto Answer Hybrid t u JK Audio OH AutoHybrid User Guide JK Audio Introduction The JK Audio AutoHybrid is a simple passive auto answer disconnect telephone line hybrid AutoHybrid allows simul taneous send and receive audio through analog telephone lines Not just another half duplex auto coupler this is a full duplex AutoHybrid Perfect for remote monitoring IFB feeds and many simple studio conferencing and PA telephone interface applications AutoHybrid s dual transformer hybrid circuit provides a nomi nal 20 dB separation of send and receive audio This means that the level of your send audio on the caller output jack will be approximately 20 dB less than your transmit level Balanced XLR input and output jacks provide easy connec tion to your professional audio equipment and the detach able screw terminal block provides easy access to remote features Features This small desktop unit easily converts to a rack mount unit using the optional RA4 Rack Panel The RA4 holds four AutoHybrids in a 1U rack space Features continued Call Drop Auto JK Audio E o OH Null AutoHybrid JK Audio AutoHybrid Line Phone mwwjkaudio c com Wy Caller Send Features continued 1 Call Button Press this button to answer or place a tele phone call takes the line off hook OH LED Lit when you are on line with a call Off Hook Drop Button Press this button t
3. brid needs repair you must call us to get an authorization and then carefully pack and ship it to us You will pay for shipping to us and we will pay for return back to you UPS ground No free repairs will be made if the defect was caused by misuse weather conditions or other cause except for defective workmanship or materials THERE ARE NO EXPRESSED OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE WARRANTY HERE MADE 06 06 JK Audio Inc 1311 E 6th Street Sandwich IL 60548 USA Voice 815 786 2929 Toll Free 800 JK Audio Fax 815 786 8502 Info jkaudio com www jkaudio com Copyright 2006 JK Audio Inc All Rights Reserved
4. inal is pro tected by a 220 ohm series resistor You can light a remote LED by simply connecting your LED from 5 VDC to pin 3 Screw Terminal Pinout Pin 1 Call Pin 2 Drop Pin 3 OH LED Pin 4 Ground Operation continued Null Adjust The Null Adjust is a 15 turn pot used to determine how much of your Send audio is delivered to the Caller output jack Use a small flatblade screwdriver to make adjust ments to this control To find the absolute null for any telephone line follow this procedure 1 Place a call to a quiet location 2 Send a signal into the AutoHybrid Send jack at a mod erate level A test signal or tone works best 3 Connect the Caller output jack to a meter or scope or listen to this signal through your external audio eguip ment 4 Try to remember the position of the adjustment screw driver blade and the number of turns you are making as you first adjust clockwise then back to the original position then counter clockwise When the level of this signal is at a minimum you have achieved the maximum null for the phone line The maxi mum null you can achieve is approximately 20 dB Does AutoHybrid work with Vonage IP telephony Yes however customers have reported one glitch in the Vonage system If the AutoHybrid is set to auto answer or if the call is manually answered on the first ring there will be a considerable amount of noise on the call This can be avoided by initiating the cal
5. l from your location or manually answering after the second ring If auto answer is an integral part of your application you may contact Vonage directly to downgrade to a previous version of their firmware This information is valid as of January 23 2006 We have no direct connection with Vonage and therefore will not Know when this particular problem is resolved Specifications Input Transmit XLR Insertion Loss Output Receive XLR Phone Line Connector Aux Phone Connector Screw Terminals Off Hook Control Release Control OH LED Signal CPC Disconnect Size Weight Balanced Female XLR 800 ohms 1 volt RMS 4 dBv max 11dB Send XLR to Phone Line Maximum transmit level at Phone Line 3 dBm Balanced Male XLR 600 ohms 200 mV RMS 15 dBm nom RJ11C 1500 VAC Isolation 0 8B REN RJ11C 5 VDC momentary 5 VDC momentary Pulled to ground on OH 300 ms minimum 4 x 5 x 1 5 10 5 x 13 x 4 cm 11 ounces FCC Part 15 Compliance This eguipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the eguipment is operated in a commercial environment This eguipment generates uses and can radiate radio freguency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio commu
6. nications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be reguired to correct the interference at his own expense Changes or modifications not expressly approved by JK Audio can void the user s authority to operate the eguipment 10 FCC Registration Your new JK Audio product has been registered with the Federal Communications Commission FCC This product complies with the standards in Part 68 of the FCC rules 1 Connection and use with the nationwide telephone network The FCC requires that you connect this telephone equipment to the national telephone network through a USOC RJ 11C modular telephone jack This eguipment may not be used with Party Line Service or Coin Telephone Lines This eguipment is hearing aid compatible 2 Information for the telephone company Upon reguest from your local telephone company you are reguired to provide the following information a The line to which you will connect the telephone eguipment that is your telephone number and b The telephone equipment s FCC registration number This can be found on the bottom of your telephone eguipment and c The ringer eguivalence number REN for this eguipment The REN is used to determine the guantity of devices which will be connected to the telephone line Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call In most
7. o drop hang up a call Auto Answer Press this switch to enable the AutoHy brid to automatically answer an incoming call and then disconnect after the caller hangs up Auto answer will occur on the first ring Null Adjust Used to adjust the level of Send audio that is present on the Caller output jack Line Jack Connect to a standard single line analog telephone line Phone Jack Connect a single line analog telephone for call setup and dialing Remote Screw Terminals Call Momentary 5 VDC to seize phone line Drop Momentary 5 VDC to release phone line OH pulled to ground for OH LED Caller Output Male balanced line level XLR output contains audio from the phone line Send Input Female balanced line level XLR input for signals going into the phone line Connection Connecting Cables Phone Line Connect the supplied RJ 11 phone line cable between the jack marked Line and your wall jack Be sure this phone line can support standard analog telephone opera tion Send Audio Connect audio you wish to send into the phone line to the balanced line level XLR Send jack Caller Audio Connect the balanced line level Caller XLR jack to a line level input on your audio eguipment The Caller out put contains audio coming from the phone line This audio sig nal will contain the caller s voice and any audio you send into the phone line at approximately 20 dB less than your transmit level Auxiliar
8. y Telephone Connect an auxiliary telephone to this jack to dial calls After connecting a call press the Call button on the AutoHybrid and you may then hang up the telephone When you are finished with the call press the Drop button to release the phone line place the line on hook Please note When you drop a call any audio delivered to the Send jack of AutoHybrid will still appear on the Caller output jack AutoHybrid does not mute your Send audio when the phone line is On Hook Auto Answer When the Auto Answer button is in the in position AutoHy brid will answer on the first ring AutoHybrid will look for a CPC disconnect signal from the phone company to determine when a call has disconnected This will generally take only several seconds but can take up to a minute If you are using a simulated analog phone line provided by a PBX system the system must be configured to send a disconnect signal for the AutoHybrid s auto disconnect function to operate The CPC disconnect signal must be set at 300 ms minimum Detachable Remote Screw Terminal The detachable remote control screw terminal block on the back of the AutoHybrid provides connection to switch contacts for remote operation A momentary 5 VDC applied to Pin 1 takes the phone line off hook Another momentary 5 VDC applied to Pin 2 will drop the call Pin 3 is an open collector opto isolator terminal that is pulled to ground while AutoHybrid is off hook This term

AutoHybrid

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