Kramer Electronics TR-1A
Contents
1. ACCESSORIES Mounting brackets 1 Specifications are subject to change without notice 12 KRAMER SIMPLE CREATIVE TECHNOLOGY LIMITED WARRANTY Kramer Electronics hereafter Kramer warrants this product free from defects in material and workmanship under the following terms HOW LONG IS THE WARRANTY Labor and parts are warranted for seven years from the date of the first customer purchase WHO IS PROTECTED Only the first purchase customer may enforce this warranty WHAT IS COVERED AND WHAT IS NOT COVERED Except as below this warranty covers all defects in material or workmanship in this product The following are not covered by the warranty 1 Any product which is not distributed by Kramer or which is not purchased from an authorized Kramer dealer If you are uncertain as to whether a dealer is authorized please contact Kramer at one of the agents listed in the web site www kramerelectronics com Ze Any product on which the serial number has been defaced modified or removed 35 Damage deterioration or malfunction resulting from i Accident misuse abuse neglect fire water lightning or other acts of nature ii Product modification or failure to follow instructions supplied with the product iii Repair or attempted repair by anyone not authorized by Kramer iv Any shipment of the product claims must be presented to the carrier v Removal or installation of the product vi Any other cause2. which does not relate to a product defect vii Cartons equipment enclosures cables or accessories used in conjunction with the product WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR We will pay labor and material expenses for covered items We will not pay for the following 1 Removal or installations charges 2 Costs of initial technical adjustments set up including adjustment of user controls or programming These costs are the responsibility of the Kramer dealer from whom the product was purchased 3 Shipping charges HOW YOU CAN GET WARRANTY SERVICE 1 To obtain service on you product you must take or ship it prepaid to any authorized Kramer service center Ze Whenever warranty service is required the original dated invoice or a copy must be presented as proof of warranty coverage and should be included in any shipment of the product Please also include in any mailing a contact name company address and a description of the problem s 3 For the name of the nearest Kramer authorized service center consult your authorized dealer LIMITATION OF IMPLIED WARRANTIES All implied warranties including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty EXCLUSION OF DAMAGES The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option Kramer shall not be liable for 1 Damage to other p
3. TR 2A Two audio channels stereo TR 3 One video channel and two audio channels Stereo To achieve the best performance e Connect only good quality connection cables thus avoiding interference deterioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables e Avoid interference from neighboring electrical and magnetic appliances that may adversely influence signal quality and position your Kramer Isolation Transformer away from moisture excessive sunlight and dust 1 May show as a dark or light horizontal bar which slowly scrolls up or down the screen 2 Differences in ground potential 2 KRAMER SIMPLE CREATIVE TECHNOLOGY Y our Isolation Transformers Your Isolation Transformers This section defines each of the Isolation Transformer units e Figure 1 and Table 2 define the TR 1 Video Isolation Transformer e Figure 2 and Table 3 define the TR 1A Audio Isolation Transformer e Figure 3 and Table 4 define the TR 2A Audio Isolation Transformers e Figure 4 and Table 5 define the TR 3 Video Audio Isolation Transformers VIDEO OUT VIDEO IN Video Isolation Transformer Figure 1 TR 1 Video Isolation Transformer Table 2 Features and Functions of the TR 1 Video Isolation Transformer Feature Function 1 VIDEO OUT BNC Connector Connects to the video output VIDEO IN BNC Connector Connects to the video input 3 Ground In the case that you want to conn
4. 6 Dipswitches for AUDIO L Left Y Dipswitches for AUDIO R Right iaa 1 An unbalanced audio can also be used Y our Isolation Transformers Video Audio Isolation Transformers AUDIO L Out G AUDIO RING AUDIO LING Aubio R Out G ViDEO ING 2 7 T Figure 4 TR 3 Video Audio Isolation Transformers Table 5 Features and Functions of the TR 3 Video Audio Isolation Transformers Feature Function 1 Ground In the case that you want to connect the unit to an external ground 2 AUDIO RIGHT Terminal N Connects to the right balanced audio input 3 Block Connector OUT Connects to the right balanced audio output 4 VIDEO IN BNC Connector Connects to the video input 5 VIDEO OUT BNC Connector Connects to the video output 6 AUDIO LEFT Terminal IN Connects to the left balanced audio input 7 Block Connector OUT Connects to the left balanced audio output 8 Dipswitches for AUDIO L Left 9 Dipswitches for AUDIO R Right ARSS 1 An unbalanced audio can also be used KRAMER SIMPLE CREATIVE TECHNOLOGY Using the Isolation Transformer 5 1 Using the Isolation Transformer The Isolation Transformers are used for video signals TR 1 video and balanced stereo audio signals TR 3 balanced mono audio signals TR 1A and balanced stereo audio signals TR 2A There are no general rules as to how and where to connect the Isolation Tran
5. DIO RIGHT OUT and the AUDIO LEFT OUT terminal block connectors to a balanced audio stereo acceptor for example a power amplifier 5 Turn the power ON on the audio video sources and acceptors 1 An unbalanced audio signal can also be used 2 You do not need to connect all the inputs and outputs 3 Or an unbalanced audio signal 7 Using the Isolation Transformer 6 Set the dipswitches for optimum performance see section 5 2 The same principles apply to the TR 1 TR 1A and TR 2A Simply connect the units anywhere between the sources and acceptors as Table 6 defines Table 6 Connecting the TR 1 TR 1A and TR 2A Connect the Source Connect the Acceptor TR 1 A video signal for example a composite video A composite video acceptor for example a player composite video display TR 1A A balanced audio signal for example a A balanced audio acceptor for example a balanced mono microphone power amplifier TR 2A A balanced stereo audio signal for example a A balanced stereo audio acceptor for balanced stereo audio player example a power amplifier e Composite Video Player Video Balanced A Unbalanced Stereo Audio Player Figure 5 Connecting the TR 3 Video Audio Isolation Transformer 1 The TR 1 includes internal jumpers instead of dipswitches 2 Or unbalanced audio 8 KRAMER SIMPLE CREATIVE TECHNOLOGY Using the Isolation Transforme
6. Kramer Electronics Ltd ah KRAMER USER MANUAL Models TR 1 Video Isolation Transformer TR 1A Audio Isolation Transformer TR 2A Audio Isolation Transformers TR 3 Video Audio Isolation Transformers Contents Contents 1 Introduction 2 Getting Started 3 Overview 4 Your Isolation Transformers 5 Using the Isolation Transformer 5 1 Connecting the Isolation Transformer 5 2 Setting the dipswitches 5 2 1 Audio Dipswitches 5 2 2 Video Dipswitches 6 Technical Specifications Figures Figure 1 TR 1 Video Isolation Transformer Figure 2 TR 1A Audio Isolation Transformer Figure 3 TR 2A Audio Isolation Transformers Figure 4 TR 3 Video Audio Isolation Transformers Figure 5 Connecting the TR 3 Video Audio Isolation Transformer Figure 6 Dipswitch Settings for TR 3 TR 2A and TR 1A Figure 7 IN and OUT Grounding Options Figure 8 Balanced Audio Grounding Schematics Figure 9 Unbalanced Audio Grounding Schematics Figure 10 Video Grounding Schematics Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 TR 1 TR 1A TR 2A and TR 3 Characteristics Features and Functions of the TR 1 Video Isolation Transformer Features and Functions of the TR 1A Audio Isolation Transformer Features and Functions of the TR 2A Audio Isolation Transformers Features and Functions of the TR 3 Video Audio Isolation Transformers Connecting the TR 1 TR 1A and TR 2A Dipswitch Sett
7. commended interconnection cables to connect the machine to other components 13 For the latest information on our products and a list of Kramer distributors visit our Web site www kramerelectronics com where updates to this user manual may be found We welcome your questions comments and feedback Institute of Quality amp Control Q KA Y Quality ay Kramer Electronics Ltd Web site www kramerelectronics com E mail info kramerel com P N 2900 000142 REV 1
8. ect the unit to an external ground Y our Isolation Transformers E GG O W or T Audio Isolation Transformer Aupio N G Aubio OuT G 5 2 a F Hanan Figure 2 TR 1A Audio Isolation Transformer Table 3 Features and Functions of the TR 1A Audio Isolation Transformer H Feature Function 1 Ground In the case that you want to connect the unit to an external ground 2 AUDIO Terminal IN Connects to the balanced audio input 3 Block Connector OUT Connects to the balanced audio output 4 Dipswitches See section 5 2 1 An unbalanced audio can also be used 4 KRAMER SIMPLE CREATIVE TECHNOLOGY Y our Isolation Transformers KRAMER TO Audio Isolation Transformers zile T ocooo Aupio L OUT G AuDIO R IN G Aupio L IN G Aubio R Out G ali N U N U Figure 3 TR 2A Audio Isolation Transformers Table 4 Features and Functions of the TR 2A Audio Isolation Transformers Feature Function 1 Ground In the case that you want to connect the unit to an external ground 2 AUDIO RIGHT Terminal IN Connects to the right balanced audio input 3 Block Connector OUT Connects to the right balanced audio output 4 AUDIO LEFT Terminal IN Connects to the left balanced audio input 5 Block Connector OUT Connects to the left balanced audio output
9. ings Audio Dipswitch Settings Video Dipswitch Settings Table 10 Technical Specifications of the Isolation Transformers OSCARA 10 11 11 OVwNO0dQau uN 11 12 Introduction 1 Introduction Welcome to Kramer Electronics since 1981 a world of unique creative and affordable solutions to the infinite range of problems that confront the video audio and presentation professional on a daily basis In recent years we have redesigned and upgraded most of our line making the best even better Our 500 plus different models now appear in 8 Groups which are clearly defined by function Congratulations on purchasing your Kramer TR 1 Video Isolation Transformer TR 1A Audio Isolation Transformer TR 2A Audio Isolation Transformers or TR 3 Video Audio Isolation Transformers This product is ideal for e Broadcast and production audio video studios e Audio video duplication studios e Staging and fieldwork The package includes the following items e TR 1 or TR 1A or TR 2A or TR 3 e This user manual 2 Getting Started We recommend that you e Unpack the equipment carefully and save the original box and packaging materials for possible future shipment e Review the contents of this user manual 1 GROUP 1 Distribution Amplifiers GROUP 2 Video and Audio Switchers Matrix Switchers and Controllers GROUP 3 Video Audio VGA XGA Processors GROUP 4 Interfaces and Sync Processors GROUP 5 Twisted Pa
10. ir Interfaces GROUP 6 Accessories and Rack Adapters GROUP 7 Scan Converters and Scalers and GROUP 8 Cables and Connectors 2 Mono 3 Stereo 4 Download up to date Kramer user manuals from our Web site at http www kramerelectronics com 1 Overview 3 Overview In many applications the connection between video and or audio sources and acceptors induces 50Hz or 60Hz ground loops with an undesirable effect such as hum bars and audio hum The Kramer Isolation Transformers break the ground connection in audio video transmission lines eliminating the hum caused by ground loops The high performance Kramer Isolation Transformers are designed for applications in which interference problems due to improper grounding and different ground potentials affect the quality of the audio video signal It can also be used to remove DC potentials as well as for removal of common mode noise for example induced on long cable runs The Isolation Transformers are purely passive units and are ideal for fieldwork The Isolation Transformers e Include a video bandwidth of 5 8MHz and an audio bandwidth from 20Hz to 20kHz e Have excellent linearity e Offer total galvanic isolation between input and output Table 1 describes the unique characteristics of each unit Table 1 TR 1 TR 1A TR 2A and TR 3 Characteristics Machine Name Isolates and Transforms TR 1 One video channel TR 1A One audio channel mono
11. nding Schematics Technical Specifications 6 Technical Specifications Table 10 Technical Specifications of the Isolation Transformers INPUTS TR 3 1 composite video 1Vpp 75Q on a BNC connector 2 balanced audio 4dBu 600Q on detachable terminal blocks TR 2A 2 balanced audio 4dBu 600Q on detachable terminal blocks TR 1A 1 balanced audio 4dBu 600Q on a detachable terminal block TR 1 1 composite video 1Vpp 75Q on a BNC connector OUTPUTS TR 3 1 composite video 1Vpp 75Q on a BNC connector 2 balanced audio 4dBu 600Q on detachable terminal blocks TR 2A 2 balanced audio 4dBu 600Q on detachable terminal blocks TR 1A 1 balanced audio 4dBu 600Q on a detachable terminal block TR 1 1 composite video 1Vpp 75Q on a BNC connector MAX OUTPUT LEVEL VIDEO 4Vpp 75Q AUDIO 26dBu BANDWIDTH 3dB VIDEO lt 10Hz to 5 8MHz 3dB AUDIO 20Hz to 20kHz DIFF GAIN 0 05 DIFF PHASE 0 05 Deg K FACTOR lt 1 2 S N RATIO VIDEO 73dB AUDIO 83dBu 4dBu 1000Hz CONTROLS Dipswitches to connect to chassis VIDEO TILT 0 1 Pulse amp Bar VIDEO NON LINEARITY 0 1 COUPLING VIDEO Transformer AUDIO Transformer AUDIO THD NOISE lt 0 025 4dBu 1000Hz DIMENSIONS TR 3 TR 2A TR 1A 12 1cm x 7 2cm x 3cm 4 77 x 2 85 x 1 2 W D H TR 1 12cm x 7 3cm x 3cm 4 7 x 2 88 x 1 2 W D H WEIGHT 0 34 kg 0 75lbs approx
12. r 5 2 Setting the dipswitches Figure 6 and Table 7 define the factory default dipswitches Aubio L Out G Aubio R IN G Aubio L In G Aubio R Out G VIDEO OUT G VIDEO N G 1 ma cc FR T T Aubio L Out G Aunio R IN G HE ie LING Aupio R Out G Pp lt E NU 1 N I I cc Aubio ING Aubio Out G a lt 37 EL RP Figure 6 Dipswitch Settings for TR 3 TR 2A and TR 1A Table 7 Dipswitch Settings DIPS Name Description 1 Chassis ground 2 fe 2 AUDIO L OUT G_ The output audio signal ground 4 f3 AUDIO L ING The input audio signal ground 4 VIDEO OUT G Sk 1 VIDEO IN G a 3 2 AUDIO ROUTG The output audio signal ground x 3 AUDIO R ING The input audio signal ground 4 Chassis ground 1 For TR 3 Table 7 is fully applicable For TR 2A the audio dipswitches in Table 7 are applicable For TR 1A the AUDIO RIGHT dipswitches not including the video dipswitch in Table 7 are applicable Using the Isolation Transformer The grounding conditions are set by trial and error Check all the options to work out which option best suits your needs 5 2 1 Audio Dipswitches The dipswitches let you set the grounding conditions as illustrated in Figure 7 and defined in Table 8 for the audio channels AUDIO RIGHT AUDIO LEFT IN_ Our VIDEO IN VIDEO OUT IN_ Our ay i Figure 7 IN and OUT Grounding Options Table 8 A
13. roperty caused by defects in this product damages based upon inconvenience loss of use of the product loss of time commercial loss or 2 Any other damages whether incidental consequential or otherwise Some countries may not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations and exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from place to place NOTE All products returned to Kramer for service must have prior approval This may be obtained from your dealer This equipment has been tested to determine compliance with the requirements of EN 50081 Electromagnetic compatibility EMC generic emission standard Part 1 Residential commercial and light industry EN 50082 Electromagnetic compatibility EMC generic immunity standard Part 1 Residential commercial and light industry environment CFR 47 FCC Rules and Regulations Part 15 Radio frequency devices Subpart B Unintentional radiators CAUTION B Servicing the machines can only be done by an authorized Kramer technician Any user who makes changes or modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the equipment B Use the supplied DC power supply to feed power to the machine B Please use re
14. sformers This depends on many factors which relate to the setup of the studio improper grounding and so on The best method is to disconnect all the equipment and then connect it one by one checking for hum as each piece of equipment is connected When hum is detected the appropriate Isolation Transformer is connected at that point to break the ground loop The Isolation Transformers also provide different grounding combinations which are set via the dipswitches for optimum operation This section describes how to connect an Isolation Transformer see section 5 1 and set the dipswitches for optimum performance see section 5 2 Connecting the Isolation Transformer When installing an Isolation Transformer you just connect it somewhere on the line between the source and the acceptor The particular example in Figure 5 shows how to connect the TR 3 Video Audio Isolation Transformers However this is not a specific recommendation as there are many different configuration options To connect the TR 3 do the following 1 Connect a video source for example a composite video player to the VIDEO IN BNC connector 2 Connect the VIDEO OUT BNC connector to a video acceptor for example a composite video display 3 Connect a balanced audio stereo signal source for example a balanced stereo audio player to the AUDIO RIGHT IN terminal block connector and the AUDIO LEFT IN terminal block connector 4 Connect the AU
15. udio Dipswitch Settings AUDIO LEFT Description AUDIO RIGHT 1 2 3 2 3 4 ON ON ON Audio IN and OUT are grounded to the chassis ON ON ON ON ON OFF Audio OUT shield is connected to the common ground ON OFF ON audio IN shield is left open ON OFF ON Audio IN is connected to chassis audio OUT is grounded OFF ON ON to the shield OFF ON ON Audio IN and OUT are both grounded to the shield ON ON OFF Figure 8 and Figure 9 show the balanced and unbalanced audio grounding schematics respectively Figure 8 Balanced Audio Grounding Schematics 1 In most applications the ground is not connected 2 Only these combinations are applicable Other dipswitch settings are insignificant 10 KRAMER SIMPLE CREATIVE TECHNOLOGY Using the Isolation Transformer 5 2 2 Table 9 defines the video ground conditions that are set by DIP 4 on the left Video Dipswitches and DIP 1 on the right Figure 9 Unbalanced Audio Grounding Schematics Table 9 Video Dipswitch Settings VIDEO OUT VIDEO IN G Description G DIP 4 DIP 1 ON ON Video IN and OUT are grounded to the chassis ON OFF Video OUT is grounded to the chassis video IN is not OFF ON Video IN is grounded to the chassis video OUT is not OFF OFF Video IN and OUT are not grounded to the chassis Figure 10 illustrates the video grounding schematics IN th OUT oh Figure 10 Video Grou
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