USER MANUAL
Contents
1. RS 422 Ports 8 RS 422 bi directional connectors CONTROL RS 485 Connector Connector for external RS 485 control PINOUT G CONTROL RS 232 IN Connector Connect to the PC serial port CONTROL RS 232 OUT Connector Connect to the RS 232 IN port of the next unit O R w p t Power Connector with Fuse AC connector enabling power supply to the unit KRAMER Your Matrix Switcher 4 1 Connecting the VS 4228 Matrix Switcher To connect the VS 4228 connect the following to the rear panel ports e Power cord e DB 9M Connector cables from the Slave and the Master devices e A PC via the null modem adapter when using the Kramer Control software or other controller if control via RS 232 is required e RS 485 terminal block cable if control via RS 485 is required 4 1 1 Connecting a PC To connect a PC to the VS 4228 using the Null modem adapter provided with the machine recommended e Connect the RS 232 DB9 rear panel port on the VS 4228 unit to the Null modem adapter and connect the Null modem adapter with at least 3 straightforward wires pins 2 3 and 5 to the RS 232 DB9 port on your PC To connect a PC to the VS 4228 without using a Null modem adapter e Connect the RS 232 DB9 port on your PC to the RS 232 DB9 rear panel port on the VS 4228 unit as Figure 4 illustrates depending on whether the PC has a 9 pin or 25 pin connector PIN 5 Connected to PIN 5 Ground PIN2. More Than One Slave e Communication between one Master and one Slave is simple However communication between one Master and several Slaves for example in duplication applications is more complicated e If all the Slaves were to respond simultaneously to a Master command the system would grind to a halt To avoid such a situation a special algorithm in the VS 4228 dictates that the Master will receive only the response from the highest priority slave with more than one Slave device For example in a setup in which port 7 is the Master and ports 5 3 and 6 are Slaves the VS 4228 will only transmit to the Master the reply from port 3 and will discard all the other replies e Pay special attention in broadcast applications the most common reply message from a Slave is the TIMECODE data therefore with the above described algorithm the response will come from the lowest numbered Slave 1 The lowest numbered Slave device 4 KRAMER ELECTRONICS LTD Your Matrix Switcher 4 Your Matrix Switcher Figure 3 and Tables and 2 define the VS 4228 Or 5 2 OOOO Ce Power 7 uA p nogan 2 ga 77 o m a O O SELECTOR STATUS 45 a5 7 8 OFF sTo SLAVE CONTRE oL 8 S485 8 232 I
3. 3 Connected to PIN 2 PIN 2 Connected to PIN 3 PIN 7 Connected to PIN 5 Ground PIN 2 Connected to PIN 2 PIN 3 Connected to PIN 3 Female DB9 From PC Male DB9 To Switcher PIN 4 Connected to PIN 6 PINS 8 7 1 Connected together If a shielded cable is used connect the shield to PIN 5 Female DB25 From PC Male DB9 To Switcher PIN 20 Connected to PIN 6 PINS 8 5 4 Connected together lf a shielded cable is used connect the shield to PIN 7 DB25 and PIN 5 DB9 Figure 4 Connecting a PC without using a Null modem Adapter 1 Switch OFF the power on each device before connecting it to your VS 4228 After connecting your VS 4228 switch on its power and then switch on the power on each device 6 KRAMER ELECTRONICS LTD Technical Specifications 5 Technical Specifications Table 3 includes the technical specifications Table 3 Technical Specifications of the VS 4228 Matrix Switcher Connectors 8 in out RS 422 ports on DB 9 female connectors fully compliant to the TIA EIA 422 B standard RS 232 control via DB 9F connector RS 232 out on DB 9M connector RS 485 on terminal block assembly Control Manual with pushbuttons on front panel RS 485 and RS 232 serial interface Dimensions 19 inch W 7 inch D 1U H rack mountable Power Source 230 VAC 50 60 Hz 115VAC U S A 10VA Weight 2 2 kg 4 88 lb
4. 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 recommended interconnection cables to connect the machine to other components 8 KRAMER ELECTRONICS LTD 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 Safety Warning Disconnect the unit from the power s
5. broadcast equipment the protocol 3 1 3 Bi directional Signals e By using a pair of conductors each signal travels in both directions via a balanced line between Master Slave devices as Figure 1 illustrates PINS 3 and 8 PINS 3 and 8 apse QOO0000 e Fees OO000 P e t Fe MASTER _Wooooff wn cooo ff 2 SLAVE eve PINS 2 and 7 PINS 2 and 7 5 6 Figure 1 Bi directional Signals I e When a Master device changes position with a Slave device the pins 2 KRAMER ELECTRONICS LTD Overview automatically change as section 3 1 6 describes and as Figure 2 illustrates PINS 2 and 7 PINS 2 and 7 steers 00000 555 lloo000 h Free a ee e D H daa O PINS3and8 PINS 3 and 8 5 6 Figure 2 Bi directional Signals I 3 1 4 Communication Method via a DB9 Connector e The Master unit usually sends a command to the Slave device via pins 3 and 8 and the Slave device responds to the Master via pins 2 and 7 e Keep the communication path clear between the Master and Slave units in both directions as the Slave device must respond to a command transmitted by the Master e Ifthe Master receives no response from the Slave the Master will cancel the communication with the Slave machine and will sometimes flag a message no communication For example in video production when a special controller with play and rewind functionality is the Master device each command transmitted to
6. Kramer Electronics Ltd ah KRAMER USER MANUAL Model VS 4228 8 Port RS 422 Matrix Switcher Contents Contents 1 Introduction 2 Getting Started 3 Overview 3 1 About RS 422 3 1 1 Signal Terminology 3 1 2 Standards 3 1 3 Bi directional Signals 3 1 4 Communication Method via a DB9 Connector 3 1 5 Device Definition 3 1 6 Automatic Configuration 3 1 7 Port Definitions 3 1 8 More Than One Slave 4 Your Matrix Switcher 4 1 Connecting the VS 4228 Matrix Switcher 4 1 1 Connecting a PC 5 Technical Specifications 6 Communication Protocol Figures Figure 1 Bi directional Signals I Figure 2 Bi directional Signals II Figure 3 VS 4228 8 Port RS 422 Matrix Switcher Figure 4 Connecting a PC without using a Null modem Adapter Tables Table 1 Front Panel VS 4228 Matrix Switcher Features Table 2 Rear Panel VS 4228 Matrix Switcher Features Table 3 Technical Specifications of the VS 4228 Matrix Switcher Table 4 VS 4228 Matrix Switcher Hex Table NAN DA MN BWWWWNNNDN DANNWN NNUU KRAMER Introduction 1 Introduction Dedication by Kramer Electronics since 1981 to the development and manufacture of high quality video audio equipment makes the Kramer line an integral part of the finest production and presentation facilities in the world In recent years Kramer has redesigned and upgraded most of the line making the best even better The Kramer line of professional video audio el
7. N RS2920UT zove 0 1 2 olg 4 FUSE Figure 3 VS 4228 8 Port RS 422 Matrix Switcher Table 1 Front Panel VS 4228 Matrix Switcher Features Feature Function 1 Power Switch Illuminated switch supplying power to the unit 2 MASTER Buttons Select 1 8 to connect between a SLAVE device and a MASTER device 3 SLAVE Buttons Select 1 8 to connect between a MASTER device and a SLAVE device 4 ALL Button Pressing ALL before pressing a SLAVE button connects that SLAVE to all MASTER devices 5 OFF Button Pressing OFF after pressing a MASTER button disconnects that MASTER device from the SLAVE devices To disconnect all the MASTER devices press the ALL button and then the OFF button 6 STOButton Pressing STO STORE followed by an MASTER button stores the current setting 7 RCL Button Pressing the RCL RECALL button and the corresponding MASTER key recalls a setup The stored status blinks Pressing a different MASTER button lets you view another setup After making your choice pressing the RCL button again implements the new status 8 SLAVE STATUS Labels identify a cross point between each SLAVE to which the MASTER displayed below it is connected 9 MASTER STATUS 7 segment Display shows the selected MASTER switched to the SLAVE alongside the corresponding SLAVE label Table 2 Rear Panel VS 4228 Matrix Switcher Features Feature Function
8. ectronics 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 our high quality switchers and matrices we also offer excellent distribution amplifiers remote controllers processors interfaces and computer related products Congratulations on purchasing your Kramer VS 4228 8 Port RS 422 Matrix Switcher This product is ideal for the following typical applications e Remote control of video and audio production studios e Live broadcast remote control e CCTV and other remote control applications The package includes the following items e VS 4228 8 Port RS 422 Matrix Switcher e Power cord e Windows 95 98 NT Kramer control software e Null modem adapter 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 3 Overview The VS 4228 is an 8 port control matrix switcher that is RS 422 based and e Offers simple to connect automatic master slave configuration e Includes a bright LED display showing the status of the matrix switcher e Recalls up to 15 configuration setups via the non volatile memory e Is controllable via the front panel buttons or remotely by RS 485 or RS 232 serial commands transmitted by a touch screen system PC or other KRAMER Ove
9. f 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 I 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 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 cause 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 o
10. f 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 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 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 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
11. rview serial controller 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 appliances that may adversely influence signal quality and position your Kramer VS 4228 in a location free from moisture and away from excessive sunlight and dust 3 1 About RS 422 RS 422 control switchers differ substantially from video and audio switchers in both design and in operation as sections 3 1 1 to 3 1 8 describe 3 1 1 Signal Terminology e Connections are between Master and Slave or Controller and Controlled devices rather than the regular Jn and Out or Source and Destination devices The difference is not merely one of semantics but a vital distinction when trying to understand the concept of RS 422 technology e With a regular Jn and Out switcher not only does the front panel have separate In and Out buttons but the rear panel also has separate ports for input and output connectors e With a Master and Slave control switcher the front panel has separate Master and Slave buttons but the rear panel has shared Master Slave connectors 3 1 2 Standards RS 422 meets 2 specific standards e TIA EIA 422 B which defines the electrical specifications e SMPTE 207M which defines the rules of exchanging information for
12. s approx Accessories Power cord Windows 95 98 control software null modem adapter 6 Communication Protocol Table 4 includes the Protocol 2000 hexadecimal codes the protocol uses 4 bytes of information data is at 9600 baud no parity 8 data bits and one stop bit Full details are available at our web site www kramerelectronics com Table 4 VS 4228 Matrix Switcher Hex Table S1 S2 S3 S4 S5 S6 S7 S8 M1 01 01 01 01 01 01 01 81 81 81 81 81 81 81 82 83 84 85 86 87 88 81 81 81 81 81 81 81 M2 0 01 01 01 01 01 01 82 82 82 82 82 82 82 8 83 84 85 86 87 88 8 81 81 81 81 81 81 M3 0 01 01 01 01 01 01 83 83 83 83 83 83 83 8 82 84 85 86 87 88 8 81 81 81 81 81 81 M4 0 01 01 01 01 01 01 84 84 84 84 84 84 84 8 82 83 85 86 87 88 8 81 81 81 81 81 81 M5 0 01 01 01 01 01 01 85 85 85 85 85 85 85 8 82 83 84 86 87 88 8 81 81 81 81 81 81 M6 0 01 01 01 01 01 01 86 86 86 86 86 86 86 8 82 83 84 85 87 88 8 81 81 81 81 81 81 M7 0 01 01 01 01 01 01 87 87 87 87 87 87 87 8 82 83 84 85 86 88 8 81 81 81 81 81 81 M8 0 01 01 01 01 01 01 88 88 88 88 88 88 88 8 82 83 84 85 86 87 8 81 81 81 81 81 81 KRAMER 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 three years from the date o
13. the Slave device must reach that Slave device and that Slave device must respond otherwise the Master device will disconnect 3 1 5 Device Definition e Inmany broadcast applications different machines involved in production can be either Slaves or Masters Using a device as a Master means that the device talks via pins 3 and 8 and listens via pins 2 and 7 In another setup that uses the same device as a Slave this will mean that the device talks via pins 2 and 7 and listens via pins 3 and 8 e For example an edit controller always works as a Master During an editing session a VTR may be the Slave to the edit controller However in a duplication setup the VTR may become a Master for a second VTR 3 1 6 Automatic Configuration e After connecting the DB9 connectors and cables between the controlled units the VS 4228 automatically configures which pins to use in the DB9 connector according to the assignment of each machine 3 1 7 Port Definitions e Modern equipment usually has only one connector RS 422 which functions as a Master as well as a Slave e Some older broadcast equipment contains 3 RS 422 connectors RS 422 In RS 422 Out and RS 422 In Out You can only connect a Master to a RS 422 In port and you can only connect a RS 422 Out port to a Slave When connecting to a RS 422 In Out port the unit changes dynamically automatically KRAMER Overview reconfiguring the DB9 port pins to be either a Master or a Slave 3 1 8
14. upply before opening servicing Caution 9001 O 2 ge ia Institute of Quality amp Control Kramer Electronics Ltd Web site www kramerelectronics com E mail info kramerel com P N 2900 002033 REV 3A
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