USER MANUAL - Kramer Electronics Japan Homepage
Contents
1. 0 78VA 12VDC 40mA KRAMER ELECTRONICS LTD SPECIFICATIONS continued Configuration 1 5 VM 50YC 1 5 1 5 Input Type 1 stereo audio 1 s video looping 1 video looping Input Connections 6 5 mm stereo phone sockets 4P connectors with a termination switch BNC connector with termination switch Input Level 1Vpp 50kohm 1Vpp 75ohm Y 0 3Vpp 75ohm C 1Vpp 750hm Output Type 5 stereo audio 5 s video looping 5 video Output Connector 6 5 mm stereo phone sockets AP connectors BNC connectors Output Level 250mW 80hm 1Vpp 750hm Y 0 3Vpp 750hm C 1Vpp 750hm Output Coupling AC AC AC S N Ratio Better than 78dB 80 5dB 73db Audio Bandwidth 20 100 000 Hz 3dB NA NA Video Bandwidth NA 280 MHz 3dB Y 480MHz 3dB Max audio Output 8Vpp NA NA Max video Output 2Vpp Y 2Vpp Differential Gain 0 05 0 05 Differential Phase 0 05Deg 0 12Deg Audio THD N Less than 0 08 100mW NA NA K Factor NA lt 0 1 lt 0 05 Level Controls 5 stereo output level controls front 1 mono switch rear Y control Range 1 6 to 3 3db C Control 1 6 to 3 3db Gain Range 0 8 to 1 9db EQ control 0 to 3 2db Gain Range 70db 60db to 10db 1 6 to 3 3dB 0 8 to 1 9dB Dimensions W D H 16 5cm x 122. 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 NOTICE 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 gt Any user who makes changes or modifications to the unit without the express approval of the manufacturer will void user authority to operate the equipment gt Use the supplied AC power cord to supply power to the switcher and controllers gt Please use recommended interconnect cables to connect the switcher to controllers and other components For the latest information on our products and a list of Kramer distributors visit our Web site www kramerelectronics com Updates to this user manual may be found at http www kramerelectronics com manuals html We welcome your questions comments and feedback c UL us LISTED L T E E226674 Kramer Electronics Ltd Web site www kramerelectronics com E mail info kramerel c
3. video up to 21V 50kohm audio Looping 4dbm 50kohm Output Type 2 video 2 stereo audio balanced mono 5 video composite single component or serial digital 5 stereo audio balanced mono 5 stereo audio Output Connector BNC connector video RCA connector audio BNC connector video RCA connector audio RCA connectors Output Level 1Vpp 75 video 1Vpp 75ohm video 4dBm 1000hm 4dBm 500hm audio up to 21V 2200hm audio Output Coupling DC video DC AC internally selectable AC AC audio S N Ratio Better than 85dB audio gt 82dB 1V audio 83db unweighted 75dB video 75dB video Audio Bandwidth gt 100KHz 0 1db points 100 kHz 50khz 3db Video Bandwidth Exceeding 400 MHz Exceeding 350 MHz NA Max audio Output gt 24dBm 20dBm 25Vpp Max video Output 1 5Vpp 1 7Vpp NA Differential Gain 0 05 0 05 NA Differential Phase 0 1Deg 0 1Deg NA Audio THD N 0 017 0 009 lt 0 018 Second harmonic 0 002 1KHz 0 001 1KHz 0 003 K Factor lt 0 05 lt 0 05 NA SDI eff Range Up to 50 meters Up to 70 meters NA Dimensions W D H 16 5cm x 12cm x 4 5cm 6 5 x 4 72 x 1 77 22cm x 18cm x 4 5cm 8 66 x 7 08 x 1 77 16 5cm x 12cm x 4 5cm 6 5 x 4 72 x 1 77 Weight Power Source 0 620Kg 1 3lbs Approx 1 40Kg 3 3lbs Approx 0 62Kg 1 4lbs Approx 230VAC 50Hz 115V USA 3 5VA 230VAC 50Hz 115V USA
4. VM 50V Front Rear Panel Features J2 Internal Jumper Location Installing a VM Amplifier In a Mixed AC DC Video Audio System Locating The Internal Fuses List Of Tables VM 2N Front Rear Panel Features VM S5S Front Rear Panel Features VM 50A Front Rear Panel Features VM 50H Front Panel Features VM 50H Rear Panel Features VM 50YC Front Rear Panel Features VM 50V Front Rear Panel Features Page 0D ON AA A AAN H th th hhh th hhh hhh hh ON AAA UU PP PW uy ww tw y nn Ra Page 10 11 12 14 15 18 11 11 12 13 KRAMER ELECTRONICS LTD 1 1 1 1 2 INTRODUCTION Congratulations on your purchase of this Kramer Electronics amplifier Since 1981 Kramer has been dedicated to the development and manufacture of high quality video audio equipment The Kramer line has become an integral part of many of the best production and presentation facilities around the world In recent years Kramer has redesigned and upgraded most of the line making the best even better Kramer s line of professional video audio electronics is one of the most versatile and complete available and is a true leader in terms of quality workmanship price performance ratio and innovation In addition to the Kramer line of high quality amplifiers such as the one you have just purchased Kramer also offers a full line of high quality switchers processors interfaces controllers and computer related products This manual includes configuration operatio
5. cons cone TT comi J iS e ici y ea m cons L c15 cra a lt en g 7 z E B POG A BAS GO OS El D2 2 ja ui OD TT AE La 0 T O a gs E Fr ys q r 4 E allte art 3 00 a Re E NY 5 VM 50A fuse i a e al C nO Raz i LL a Y nes O yes r fd I al le 102 IF a ii ICT z E 2 2 E RAE RTTE ms T 2 Sra eC Reo Ra T VM50A REV 1 0809982 0 es cr a O c22 R34 OPAT orar MA DOL O L l E E J E CON1 a SW1 2 8 g cona ca CONS c24 cone c23 CONS ce 5 VM 50H fuse Laag aC AC 1B OROLOLOQ OS nae Coes CO O 2 0107 10 10 10 010005 er 2 ENE mE eN 2 AL A VM5OH REV 1 S Ja AHD OAD ON AR 0 3 a ice ica ica c2 ict ES FE a O e E T TET E aT Pa Tan i BE S i 8 i Sn 8 Dg Hi Ja oo Ni E E Sok 2 d AAA o 0 cas cso C38 a7 ce 0306991 0 COCO GOO COO GOGO OOo x K KRAMER POT1 2 POTS 10 POT7 8 POT5 6 POT3 4 VM 50V fuse 0 VM 50YC fuse lo e 5 Y cY c Y Cc Y Cc Y G Y Cc Y e COJ COJ COJ co col fone CONT R21 O Oa ee er E Bag fa E
6. for looping purposes and splits the incoming signal to enable connection of an additional machine gt Termination Plug Used to terminate the line to 750hm for proper matching gt SP 40 video audio Processor Serially connected between the video audio source and the VM amplifier for video and audio processing The machine is a high quality processor used for video control and correction in duplication and production studios camera control luminance and white balance correction The SP 40 is capable of Composite to Y C conversion and bi directional transcoding The machine allows video gain control down to full fade definition control contrast control color saturation control black level control audio mix control for mixing between the selected source and an audio AUX source and a screen splitter control for before after comparison The unique limiter switch in the SP 40 allows true signal limiting and special effects gt SP 11 video audio Processor can be serially connected between the video audio source and the VM amplifier for video and audio control correction The machine provides camera control and luminance white balance correction The SP 11 is also capable of performing composite to Y C conversion and bi directional transcoding The machine allows full control over the video signal video gain down to full fade log or linear definition control log or linear contrast control color saturation control black level co
7. AMER ELECTRONICS LTD 16 11 2 Audio Signal VM 2N VM 5S VM 50A VM 50H Only No audio at the Output Device Regardless of Input Selected Audio level is too low Confirm that your sources and output device are powered on and connected properly Audio signals connected to the input of your amplifier should be properly wired to the output of your source Audio signals connected to the output of your amplifier should be properly wired to the input of your amplifier or recorder Confirm that any other amplifiers in the signal path have the proper input and or output selected Pay special attention to input amplifiers that may be built into your amplifier or recording device Confirm that the connecting cables are of high quality and properly built Take special care in noting the wiring configuration of balanced to unbalanced cables Check level controls located on your source input device or output device KRAMER ELECTRONICS LTD 17 me E CON7 cone TT cons TT coma TT
8. Amplifier The KRAMER VM 5S an upgrade of the VM 6NS is an ultra high bandwidth video stereo audio Distribution Amplifier designed for analog and digital studio applications The VM 5S splits a single input source composite single component or Serial Digital video into five identical outputs video output signals can be AC or DC coupled factory default is DC and inputs can be looped through using an external termination switch The audio can be either unbalanced stereo or balanced mono The machine is housed in a half 19 wide enclosure and two machines may be mounted side by side in a 1U 19 rack space using an optional adapter Front Rear panel features of the VM 5S are described in Figure 2 and Table 2 NOTE For operation instructions refer to sections 9 1 9 2 KRAMER ELECTRONICS LTD has 16 d ee a a IN 750 y gt KIN AN AN GNI PS 4 f 2 O Y ji Je Cl OVO Son gy X wv Roady H SF LEFT RIGHT 230 vac L VIDEO IN TERM OUT1 OUT2 OUT3 OUT4 ouTSs_ AUDIO IN 50 60 Hz p AR DOS AA I N 3 4 5 7 jc MES A A Figure 2 VM 5S Front Rear Panel Features Table 2 VM 5S Front Rear Panel Features Illuminated power switch on Supplies power to the unit front panel V 2 VIDEO IN BNC connector TERM pushbutton Selects 750hm or HI z impedance pressed 750hm For looping select
9. DC feed connector A DC connector that allows power to be supplied to the unit An internal fuse holder houses the appropriate fuse see location of fuse in Figure 9 KRAMER ELECTRONICS LTD 12 6 9 1 9 2 INSTALLATION The amplifier is provided with four rubber feet packed in a separate bag Fit the feet to the unit place it on the table remote from heat generating sources and make the required connections Use a rack adapter in case a rack installation is required see section 4 1 Rack Adapters in which case do not attach the feet CONNECTING TO VIDEO DEVICES Video sources and output devices such as amplifiers or recorders may be connected to the amplifier through the BNC connectors VM 2N VM 5S and VM 50V models or 4p type connectors VM 50YC model located at the back of the machine Please keep in mind that the output signal format will match that of the input signal format All signal connections that use more than one cable interconnecting between devices should be of equal length CONNECTING TO AUDIO DEVICES Audio sources and output devices such as amplifiers or recorders may be connected to the amplifier through the RCA type connectors VM 2N VM 5S and through 6 5mm phone sockets VM 50H located at the back of the machines USING THE VM VIDEO AUDIO AMPLIFIERS Powering On The Amplifier NOTES 1 Amplifier should only be powered on after all connections are completed and all source devices have
10. Hi z L 7 2 3 OUT 1 OUT 5 BNC connectors 5 amplified and buffered video outputs 5 io i 6 AUDIO IN RCA connectors audio input LEFT RIGHT OUT 1 OUT 5 RCA connectors 5 amplified and buffered audio outputs L R Me Power connector A 3 prong AC connector allows power to be supplied to the unit Directly underneath this connector a fuse holder houses the appropriate fuse 5 3 Getting To Know Your VM 50A Amplifier The KRAMER VM 50A is a high quality state of the art stereo audio Distribution Amplifier designed for studios shops showrooms and other demanding applications The VM 50A splits a single stereo input source into five identical outputs The VM 50A uses an external 12V DC power source and therefore is suitable for fieldwork as well The machine has unique built in circuitry which allows high signal level processing even while using a 12VDC power source The VM 50A machine is a perfect match to the VM 50V 50YC video s video DAs Front Rear panel features of the VM 50A are described in Figure 3 and Table 3 NOTE For operation instructions refer to sections 9 1 9 2 KRAMER ELECTRONICS LTD 1 5 Audio Distributor VM 50A Figure 3 VM 50A Front Rear Panel Features Table 3 VM 50A Front Rear Panel Features CN ee O Illuminated power switch on Supplies power to the unit front panel IN L R RCA connectors Audio input E LOOP in RCA connectors Provides audio looping
11. KRAMER ELECTRONICS Ltd USER MANUAL Video Audio Distribution Amplifiers Models VM 2N VM SS VM 50A VM 50H VM 50V VM 50YC IMPORTANT Before proceeding please read paragraph entitled Unpacking and Contents KRAMER ELECTRONICS LTD P N 2900 001003 Section 1 1 1 1 2 2 3 4 4 1 5 5 1 5 2 5 3 5 4 5 5 5 6 6 7 8 9 9 1 9 2 9 3 9 4 9 5 9 6 10 11 11 1 11 2 11 3 Figure WOON A UARWN Fe Table NYDN uno Table Of Contents Name INTRODUCTION A Word On Distribution Amplifiers Factors Affecting Quality of Results Specifications How Do I Get Started Unpacking and Contents Optional Accessories VM Series Amplifiers Getting To Know Your VM 2N Getting To Know Your VM 5S Amplifier Getting To Know Your VM 50A Amplifier Getting To Know Your VM 50H Amplifier Getting To Know Your VM 50YC Amplifier Getting To Know Your VM 50V Amplifier INSTALLATION Connecting To VIDEO Devices Connecting To audio Devices Using The VM VIDEO AUDIO AMPLIFIERS Powering On The Amplifier Looping Coupling Coupling Selection Audio Level Control Installing a VM Amplifier In a Mixed AC DC Video Audio System Taking Care Of Your Amplifier TROUBLESHOOTING Power And Indicators Audio Signal Video Signal List Of Illustrations VM 2N Front Rear Panel Features VM S5S Front Rear Panel Features VM 50A Front Rear Panel Features VM 50H Front Rear Panel Features VM 50YC Front Rear Panel Features
12. S ra Baan o 2 A YOS g EIA pm k 0809981 0 0 Sg aE VM50YC REV 1 A fl dE alt j E 102 E O 3 2332 8 E os R12 Ria coe oa E OR d K Sw gt E i l J J i T T T T T T T lo 2 iS 8 CON7 CON4 CONS CON2 CONT j CONS py CONS a ees iii z pe a E E gt OI mo ce KO a ps mo HP ma E 102 0309981 0 KRAMER ie En FUSER he St VM50V O REV 1 g o OS KRAMER ELECTRONICS LTD a ake Figure 9 Locating The Internal Fuses KRAMER ELECTRONICS LTD 18 11 3 Video Signal VM 2N VM 5S VM 50V and VM 50YC only No video at the Confirm that your sources and output device are powered on and output device connected properly Video signals connected to the input of your regardless of input amplifier should be of an identical signal format at the output of your selected source Video signals at the output of your amplifier should be of an identical signal format as at the input of your display or recorder Confirm that any other amplifiers in the signal path have the proper input and or output selected Use the video Tester to test the video path leading to from your amplifier see section 4 1 video Tester Video level is too The amplifiers in this manual except for the VM 2N have high or too low termination switches on each input Verify that the video line is well interfaced through 750hm impedance otherwise it results in a video level that is too high or too low Check if looping is used and
13. TED 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 2 Any product on which the serial number has been defaced modified or removed 3 Damage deterioration or malfunction resulting from a Accident misuse abuse neglect fire water lightning or other acts of nature unauthorized b Product modification or failure to follow instructions supplied with the product c Repair or attempted repair by anyone not authorized by Kramer d Any shipment of the product claims must be presented to the carrier e Removal or installation of the product f Any other cause which does not relate to a product defect g 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 Th
14. a real problem To prevent this phenomenon a VM 9S amplifier is installed adjacent to the video audio source gt VM 4E A Precision Mechanical 4x4 video audio Switcher Several video audio sources may be connected to its inputs for switching The machine may be used in every application where easy and fast video and audio source selection is needed and for high isolation between inputs All unselected inputs are internally terminated with 75 Ohm resistors The VM 4E switches video SDI and any other high frequency signals The VM 4E is housed in a small enclosure occupying very little desk space gt VM 8IAV A Precision Mechanical 8x1 video stereo audio Switcher Several video audio sources may be connected to its inputs for switching The machine offers fast and easy video audio source and acceptor selection The VM 81AV provides high isolation between inputs and outputs and all unselected video inputs are internally terminated with 75 Ohm resistors The VM 81AV is housed in a professional 19 rack mountable enclosure gt VS 801xl 8 1 Composite Single Component video amp Unbalanced audio Switcher Several video audio sources may be connected to its inputs for switching The machine provides truly effortless switching between eight video and unbalanced audio inputs and one output Switching is done during vertical interval either of source no 1 or of the video available on the external sync socket The switcher may be controlled by tou
15. acceptors directly and connect the AC coupled acceptors via back to back connected 1000uF 25V capacitors See Figure 8 A useful tip The capacitor may be stitched on the coaxial cable directly by carefully separating the shield from the signal leading conductor cutting this conductor and connecting the capacitor serially Video Audio Distributor DC coupled distributor e O O a at Jo e 230 VAC VIDEO IN TERM OUT1 OUT2 OUT3 OUT4 OUTS o IN 50 60 Hz FUSE Video source DC coupled video acceptor DC coupled 1000F 1000F pH F0 U Capacitor Capacitor AC coupled video acceptor 1000uF pea gt Je Capacitor Capacitor AC coupled video acceptor Figure 8 Installing a VM Amplifier In a Mixed AC DC Video Audio System KRAMER ELECTRONICS LTD 15 10 TAKING CARE OF YOUR AMPLIFIER Do not locate your amplifier in an environment where it is susceptible to dust or moisture These may damage the electronics and cause erratic operation or failure Do not locate your amplifier where temperature and humidity may be excessive Do not clean your amplifier with abrasives or strong cleaners Doing so may remove or damage the finish or may allow moisture to build up Take care not to allow dust or particles to build up inside unused or open connectors 11 TROUBLESHOOTING NOTES 1 Please note that if the output signal i
16. been powered on Do not attempt to connect or disconnect any video audio or control signals to the amplifier while it is powered on 2 The socket outlet should be near the equipment and should be easily accessible To fully disconnect equipment remove power cord from its socket 1 Press the toggle switch on the far left front panel to the up position In the up position the toggle switch glows and the active input button illuminates as well 2 Operate the acceptors Looping The looping function enables the operator to extend the number of outputs per input The following example describes looping performed by using 3 amplifiers with one input and 5 outputs each A video signal reaches input of amplifier No 1 From looping connector of amplifier No 1 a cable is connected to input socket of amplifier No 2 The loop output of amplifier No 2 is connected to the input socket of amplifier No 3 In this way the input signal is divided into 15 separate output signals The operator must always switch to Hi z the termination switch of all the amplifiers but the last The last amplifier s termination switch should always be at 750hm to maintain well matched video line of 750hm impedance from first to last amplifier Note that if looping function is not used the termination switch should be set to 75 ohm KRAMER ELECTRONICS LTD 13 A 9 3 Coupling The coupling function enables the operator to determine whether the incomin
17. buffered video outputs connectors 12VDC feed connector A DC connector that allows power to be supplied to the unit An internal fuse holder houses the appropriate fuse see location of fuse in Figure 9 KRAMER ELECTRONICS LTD 11 5 6 Getting To Know Your VM 50V Amplifier The KRAMER VM 50V is a high quality state of the art video Distribution Amplifier designed for studios shops showrooms and other demanding applications The VM 50V splits a single input source into five identical outputs The VM 50V uses an external 12VDC power source and therefore is suitable for fieldwork as well Dozens of copies of videotapes can be made at the same time using several VM 50V units chained through the looping inputs Front Rear panel features of the VM 50V are described in Figure 6 and Table 7 NOTE For operation instructions refer to sections 9 1 9 2 POWER 9 1 5 Video Distributor vm sov INPUT 7590 IN LOOP Figure 6 VM 50V Front Rear Panel Features Table 7 VM 50V Front Rear Panel Features ENE power switch Supplies power to the unit on front panel Hi Z 75 Ohms switch Selects 750hm or HI z impedance pressed 750hm For looping select Hi z 3 INPUT BNC connector video input o O video input o O Ba LOOP BNC connector Provides audio looping capability to increase number of outputs OUTPUTS 1 5 BNC 5 amplified and buffered video outputs connectors 12V
18. capability to increase number of outputs OUTPUTS 1 5 RCA 5 amplified and buffered audio outputs connectors 12VDC feed connector A DC connector that allows power to be supplied to the unit An internal fuse holder houses the appropriate fuse see location of fuse in Figure 9 5 4 Getting To Know Your VM 50H Amplifier The KRAMER VM 50H is a high quality state of the art stereo Headphone Distribution Amplifier designed for studios shops showrooms museums and audio fieldwork The VM 50H splits a single stereo input source into five identical outputs each output level is individually controllable The VM 50H uses an external 12VDC power source and therefore is suitable for fieldwork as well The VM 50H can drive low impedance headphones or 5 stereo sets of small loudspeakers The machine has a mono switch and thus can deliver 10 identical mono outputs instead of 5 stereo outputs Front Rear panel features of the VM 50H are described in Figure 4 Table 4 and Table 5 NOTE For operation instructions refer to sections 9 1and 9 5 KRAMER ELECTRONICS LTD EVELEONTROE CUE Out2 OutS Out4 Outs Headphone Distributor VM 50H Mpi Lea Sa a Cua oO ua 1 o g ji it PR r 2 3 14 SR Figure 4 VM 50H Front Rear Panel Features Table 4 VM 50H Front Panel Features Ml e a front a Out5 knobs Table 5 VM 50H Rear Panel Features no Fess i Retin Lo Input 6 5mm
19. ch buttons or by contact closure via a remote socket on the back of the machine video signal bandwidth is 225 MHz typical allowing the machine to be used in the most demanding applications gt TP 1 video Line Transmitter If a DA output is sent over a long distance 100 meter or more it is necessary to convert the signal to twisted pair type The TP 1 sends a color video signal over long distances using telephone wire or any other twisted pair wire thus extending the range of operation of a DA The TP 1 maintains the bandwidth of an industrial color video signal up to several hundred meters and of broadcast quality up to 12 MHz signals up to 100 meters At shorter distances as in a studio bandwidth of 30MHz is easily achieved By using the KRAMER TP 1 together with the TP 2 video Line Receiver coax wiring in a studio for example can be completely eliminated The TP 1 can also be used for KRAMER ELECTRONICS LTD 5 5 1 simplification of security and CCTV installations and for teleconferencing in offices and hospitals using existing intercom or telephone wiring VA 11AV video audio Combiner Used to distribute video audio signals The machine can be inserted in front of a DA allowing the DA to distribute a video signal and two audio signals simultaneously It sends a color video signal and a stereo audio signal using only one standard coax cable in real time The machine maintains the bandwidth of an industrial color vi
20. cm x 4 5cm 6 5 x 4 72 x 1 77 16 5cm x 12cm x 4 5cm 6 5 x 4 72 x 1 77 16 5cm x 12cm x 4 5cm 6 5 x 4 72 x 1 77 Weight 0 68Kg 1 5lbs Power Source 12VDC 1 154 0 58Kg 1 3lbs 0 6VA 12VDC 50mA 0 62Kg 1 4lbs 0 48VA 12VDC 40mA KRAMER ELECTRONICS LTD 3 HOW DO I GET STARTED The fastest way to get started is to take your time and do everything right the first time Taking 15 minutes to read the manual may save you a few hours later You don t even have to read the whole manual At the beginning of each section you ll find an overview of the section So if the section doesn t apply to you you don t have to spend your time reading it 4 UNPACKING AND CONTENTS The items contained in your Kramer VM amplifier package are listed below Please save the original box and packaging materials for possible future transportation and shipment of the amplifier gt Desktop size amplifier gt AC power cable where applicable gt User s Manual gt Rubber feet gt Kramer concise product catalog For additional information regarding optional cables and additional accessories contact your Kramer dealer 4 1 Optional Accessories The following Kramer accessories can enhance implementation of your amplifier gt Rack Adapter Used to adapt non standard size machines to a standard 1U rack One or more machines may be installed on each adapter gt BNC Y Connector Used
21. deo signal and the output signal may be viewed and recorded as a normal video signal By using the VA 11AV together with the VA 12AV video audio Separator the audio stereo signal may be recovered so audio signals may be sent in a hidden mode to be recovered only by the VA 12AV The VA 11AV can be used for simplification of security and CCTV installations using existing video coax wiring for video and audio transmissions 611T 611R 611T Fiber Optic Transmitter and 611R Fiber Optic Receiver Part of the KRAMER TOOLS series and designed for studio and other demanding applications these machines in combination may be used to send one of the distributed channels to distances of 5 25Km The full bandwidth 611T and matching 611R use state of the art fiber optic circuitry and allow the user via rear panel trimmers to adjust input and output video levels and high frequency peaking to achieve best performance VIDEO TESTER A new unique patented indispensable tool for the video professional the video Tester is used to test a video path leading to from an amplifier By pressing only one touch switch it can trace missing signals distinguish between good and jittery VCR sourced signals and identify the presence of good signals Whenever a video signal is missing because of bad connections cable breaks or faulty sources the video Tester is all you need VM SERIES AMPLIFIERS This section describes all the controls and connections of your a
22. ese 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 2 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 Kramer s liability for any defective products is limited to the repair or replacement of the product at our option Kramer shall not be liable for 1 Damage to other property 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
23. g video signal is DC or AC coupled When DC coupling is selected and proper standard video signal is applied to the amplifier s input the output signal is equal to the input signal When AC coupling is selected DC components of the incoming signal are removed DC coupling is always preferable since AC coupling might cause some linearity distortions in low and high frequencies due to non ideal behavior of capacitors A problem may arise when the incoming signal is riding on a DC offset especially when the acceptors are highly effected by deviation of DC offsets A to D converters for example which in turn results in a distorted picture 9 4 Coupling Selection VM 5S Only The VM 5S comes with a DC coupling from the factory Selecting AC Coupling is performed by removing J2 internal jumper To remove jumper perform the following steps 1 Using a Philips screwdriver remove the Philips head screws from the cover and remove the cover 2 Locate J2 internal jumper on the internal printed board see Figure 7 and remove it 3 Reinstall the cover J2 INTERNAL JUMPER aH aH 3H 3H ABWaNOO3S 505 oro d AVN sn 8l Figure 7 J2 Internal Jumper Location 9 5 Audio Level Control VM 50H Only To enable stereo audio control verify that the Mo
24. if termination switch is in the proper position for this state Confirm that the connecting cables are of high quality properly built and terminated with 750hm BNC connectors Check level controls located on your source input device or output device Noise bars roll up Hum bars ground loop are caused by a difference in the ground or down in the potential of any two or more devices connected to your signal path This output image difference is compensated by passing that voltage difference through or any available interconnection including your video cables Low frequency hum in the output signal WARNING Do not disconnect the ground from any piece of video equipment in your signal path Check the following to remove hum bars Confirm that all interconnected equipment is connected to the same phase of power Remove equipment connected to this phase that may be introducing noise such as motors generators etc Disconnect all cables and reconnect them one at a time until ground loop reappears Disconnect the affected cable and replace or insert an isolation device opto isolator or transformer in the signal path KRAMER ELECTRONICS LTD 19 LIMITED WARRANTY Kramer Electronics hereafter Kramer warrants this product to be free from defects in material and workmanship under the following terms HOW LONG IS THE WARRANTY Labor and parts are warranted for three year from the date of the first customer purchase WHO IS PROTEC
25. istance is the target Sockets and connectors also must match the required impedance 75 ohms in video Cheap low quality connectors tend to rust thus causing flaws in the signal path Amplifying circuitry Must have quality performance when the desired end result is high linearity low distortion and low noise operation Distance between sources and acceptors Plays a major role in the final result For long distances over 15 meters between sources and acceptors special measures should be taken in order to avoid cable losses These include using higher quality cables or adding line amplifiers Interference from neighboring electrical appliances These can have an adverse effect on signal quality Balanced audio lines are less prone to interference but unbalanced audio should be installed far from any mains power cables electric motors transmitters etc even when the cables are shielded KRAMER ELECTRONICS LTD SPECIFICATIONS Configuration VM 2N 1 2 VM 5S 1 5 VM 50A 1 5 Input Type 1 Composite single component video 1 stereo audio balanced mono 1 video internally selected looping composite single component or serial digital 1 stereo audio balanced mono 1 stereo audio Input Connections BNC connector video RCA connector audio BNC connector with rear termination switch video RCA connector audio RCA Input Level 1Vpp 75ohm video 4dBm 50kohm audio 1Vpp 75ohm on
26. mplifier Understanding all of the controls and connections helps you realize its full power Getting To Know Your VM 2N The KRAMER VM 2N is an ultra high bandwidth state of the art video stereo audio Distribution Amplifier designed for analog and digital studio applications The VM 2N splits a single input source be it composite single component or Serial Digital video into two identical outputs with no discernible signal degradation video output signals are DC coupled The audio can be either unbalanced stereo or balanced mono as the audio performance and levels of the VM 2N are appropriate for use in the most demanding applications Front Rear panel features of the VM 2N are described in Figure 1 and Table 1 NOTE For operation instructions refer to section 9 1 KRAMER ELECTRONICS LTD Video Audio Distributor VM 2N f k 18 230 VAC 50 60Hz Figure 1 VM 2N Front Rear Panel Features Table 1 VM 2N Front Rear Panel Features l Illuminated power switch on Supplies power to the unit front panel VIDEO IN BNC connector OUT 1 OUT 2 BNC connectors 2 amplified and buffered video outputs L R 5 OUT 1 OUT 2 RCA audio 2 amplified and buffered audio outputs connectors L R to the unit Directly underneath this connector a fuse holder houses the appropriate fuse B Power connector A 3 prong AC connector allows power to be supplied 5 2 Getting To Know Your VM 5S
27. n and option information for the following products from the Kramer VM line of distribution amplifiers All these VM amplifiers are similar in operation and features VM 2N 1 2 Video Audio Distributor VM 5S 1 5 Video Audio Distributor VM 50A 1 5 Audio Distributor VM 50H 1 5 Headphone Distributor VM 50V 1 5 Video Distributor VM 50YC 1 5 s Video Distributor VVVVVV A Word On Distribution Amplifiers Distribution amplifiers are used to distribute one source to several acceptors for simultaneous recording or monitoring of one source with no discernible signal degradation They vary in the number of inputs looping capability programming capability number of outputs operating format bandwidth and input output coupling A good quality distribution amplifier amplifies the incoming signal pre compensates the signal for potential losses resulting from the use of long cables noisy source etc and generates several identical buffered and amplified outputs Factors Affecting Quality of Results There are many factors affecting the quality of results when signals are transmitted from a source to an acceptor Connection cables Low quality cables are susceptible to interference they degrade signal quality due to poor matching and cause elevated noise levels They should therefore be of the best quality Sockets and connectors of the sources and acceptors So often ignored they should be of highest quality since Zero Ohm connection res
28. no button is released Then gently adjust the LEVEL CONTROL Gain knobs to control the appropriate output audio gain to achieve satisfactory audio level To enable mono audio level control select Mono position by pressing the Mono pushbutton Then using the LEVEL CONTROL Gain knobs adjust gently the audio stereo level to achieve satisfactory audio level KRAMER ELECTRONICS LTD 14 9 6 Installing a VM Amplifier In a Mixed AC DC Video Audio System Video accessories use two basic forms of connection to sources and acceptors AC coupled or DC coupled Each form has its own advantages and downbacks DC coupling provides a non distorted signal transferring accurately the DC contents of input signals to the outputs AC coupling suffers from problems related to bad quality low frequency response and the breathing effect However AC coupling isolates the acceptors from an erroneous DC level sometimes found in video sources If a video acceptor is too sensitive to the DC content transferred to it via the DA from the source AC coupling is preferred AC coupling may be initiated by either using a AC DC coupling switch available on some of the video DAs or adding DC removing components externally Perform the following steps if necessary 1 Connect the video source to the DA 2 Add external coupling capacitors to each output of the DA that needs AC coupling 3 Connect the acceptors to the outputs of the DA Connect the DC coupled
29. ntrol red green and blue controls and a screen splitter control for before after comparison The Input switch control is audio follow video KRAMER ELECTRONICS LTD gt 104L video Line Amplifier Serially connected between the video source and the VM amplifier for video processing the machine is used for video line amplification and cable compensation video field work and SDI signal distribution Signal loss and the resulting depreciation in picture quality is a real problem in any video setup requiring considerable distance between video source and acceptors The KRAMER 104L video Line Amplifier one of the KRAMER TOOLS is a high quality amplifier which prevents video signal losses over long cables For best results the 104L amplifier is installed adjacent to the video source The 104L is housed in the compact KRAMER TOOLS enclosure and is fed by a 12VDC source High bandwidth and front accessible controls make it suitable for the most demanding analog and SDI studio applications gt VM 9YC video audio Line Amplifier Serially connected between the video audio source and the VM amplifier for video and audio processing the machine is a high quality video stereo amplifier which compensates for video and audio signal losses when long cables are used In any video audio setup requiring considerable distances between video audio source and acceptors signal loss and thus depreciation in the quality of both picture and sound is
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31. s disturbed or interrupted by very strong external electromagnetic interference it should return and stabilize when such interference ends If not turn the power switch off and on again to reset the machine 2 If the recommended actions still do not result in satisfactory operation please consult your KRAMER Dealer 11 1 Power And Indicators Problem No Power Confirm that the rocker switch is in the ON position and that the red LAMP LED is illuminated Confirm that power connections are secured at the amplifier and at the receptacle Make sure the receptacle is active outputting the proper mains voltage gt For models VM 50A VM 50H VN 50V VM 50YC perform the following Using a Philips screwdriver remove screws attaching the machine s cover Locate fuse holder located inside your amplifier see Figure 9 Confirm that the fuse is good by looking for the wire connected between the ends of the fuse If this wire is broken replace fuse with another with the same rating Install cover by tightening the Philips screws gt For models VM 2N 5S perform the following Remove power cord from AC outlet and the machine and then using a flat head screwdriver remove fuse holder located directly below the power connector on your amplifier Confirm that the fuse is good by looking for the wire connected between the ends of the fuse If the wire is broken replace the fuse with another with the same rating KR
32. socket Mono pushbutton Converts 5 stereo audio outputs to 10 mono outputs when pressed Out 1 Out 5 6 5mm socket 5 amplified and buffered audio outputs 12VDC feed connector A DC connector that allows power to be supplied to the unit An internal fuse holder houses the appropriate fuse see location of fuse in Figure 9 KRAMER ELECTRONICS LTD 10 5 5 Getting To Know Your VM 50YC Amplifier The KRAMER VM 50YC is a high quality state of the art s video Distribution Amplifier designed for studios shops showrooms and other demanding applications The VM 50YC splits a single input source into five identical outputs The VM 50YC uses an external 12VDC power source and therefore is suitable for fieldwork as well Dozens of copies of videotapes can be made at the same time using several VM 50YC units chained through the looping inputs Front Rear panel features of the VM 50YC are described in Figure 5 and Table 6 NOTE For operation instructions refer to sections 9 1 9 2 Figure 5 VM 50YC Front Rear Panel Features Table 6 VM 50YC Front Rear Panel Features Illuminated power switch on Supplies power to the unit front panel Hi Z 75 Ohms switch Selects 750hm or HI z impedance pressed 750hm For looping select Hi z Input 4p connector video input LOOP 4p connector Provides video looping capability to increase number of outputs OUTPUTS 1 5 4p 5 amplified and
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