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14

VS-4228 - Connecting the VS-4228

3. If shielded cable is used for an RS-485 connection, connect the shield to the

Ground PIN.

illustrates the RS-485 line that connects:



Between each

VS-4228

unit



To the PC via a Kramer Tools

VP-43xl

Interface Converter

(connect the PC’s 9-pin D-sub COM port to the “RS-232 in” 9-pin

D-sub (F) port on the

VP-43xl

. Next, connect the RS-485 port on

the

VP-43xl

to the RS-485 ports on the

VS-4228

units)

Figure 9: Cascading Units via the RS-485 Control Interface

Note

: When cascading multiple units using the RS-485 interface,

you must connect a 100Ω terminator between the + and – pins of
the last

VS-4228

on the line.

i

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Summary of Contents for VS-4228

Page 1: ...KRAMER ELECTRONICS LTD USER MANUAL MODEL VS 4228 8 Port RS 422 Matrix Switcher P N 2900 002033 Rev 5 ...

Page 2: ......

Page 3: ...s 12 5 Operating the VS 4228 15 6 Technical Specifications 17 7 Default Communication Parameters 18 8 Hex Codes 19 Figures Figure 1 VS 4228 8 Port RS 422 Matrix Switcher Front Panel 5 Figure 2 VS 4228 8 Port RS 422 Matrix Switcher Rear Panel 6 Figure 3 Bi directional Signals I 7 Figure 4 Bi directional Signals II 7 Figure 5 Connecting the VS 4228 8 Port RS 422 Matrix Switcher 10 Figure 6 Crossed C...

Page 4: ... clearly defined by function GROUP 1 Distribution Amplifiers GROUP 2 Switchers and Matrix Switchers GROUP 3 Control Systems GROUP 4 Format Standards Converters GROUP 5 Range Extenders and Repeaters GROUP 6 Specialty AV Products GROUP 7 Scan Converters and Scalers GROUP 8 Cables and Connectors GROUP 9 Room Connectivity GROUP 10 Accessories and Rack Adapters and GROUP 11 Sierra Products Congratulati...

Page 5: ...uality due to poor matching and elevated noise levels often associated with low quality cables Do not secure the cables in tight bundles or roll the slack into tight coils Avoid interference from neighboring electrical appliances that may adversely influence signal quality Position your Kramer VS 4228 away from moisture excessive sunlight and dust This equipment is to be used only inside a buildin...

Page 6: ...lected and recycled To comply with the WEEE Directive Kramer Electronics has made arrangements with the European Advanced Recycling Network EARN and will cover any costs of treatment recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility For details of Kramer s recycling arrangements in your particular country go to our recycling pages at http www kram...

Page 7: ...228 features Simple to connect automatic master slave configuration A bright LED display showing the status of the matrix switcher Recall of up to 8 configuration setups via the non volatile memory Control via the front panel buttons or remotely by RS 485 or RS 232 serial commands transmitted by a touch screen system PC or other serial controller 3 1 Defining the VS 4228 8 Port RS 422 Matrix Switc...

Page 8: ...ts the MASTER To disconnect all the SLAVE devices press the ALL button and then the OFF button 6 STO Button Pressing STO STORE followed by an SLAVE button stores the current setting 7 RCL Button Pressing the RCL RECALL button and the corresponding SLAVE key recalls a setup The stored status flashes Pressing a different SLAVE button lets you view another setup After making your choice pressing the ...

Page 9: ...s 1 8 11 CONTROL RS 485 Terminal Block Connector Connector for external RS 485 control PINOUT G 12 CONTROL RS 232 IN 9 pin D sub Connector Connect to the PC serial port 13 CONTROL RS 232 OUT 9 pin D sub Connector Connect to the RS 232 IN port of the next unit 14 Power Connector with Fuse AC connector enabling power supply to the unit 6 VS 4228 Overview ...

Page 10: ... regular In and Out switcher has separate input and output buttons on the front panel and separate ports for input and output connectors on the rear panel A master and slave control switcher has separate master and slave buttons on the front panel but shared master slave connectors on the rear panel 3 2 2 Bi directional Signals By using a pair of conductors each signal travels in both directions o...

Page 11: ...vice disconnects 3 2 3 Device Definition In many 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 means that the device talks via pins 2 and 7 and listens via pins 3 and 8 For example an edit ...

Page 12: ...duplication applications is more complicated If all the slaves were to respond simultaneously to a master command the system would lock up To avoid such a situation a special algorithm in the VS 4228 dictates that the master receives only the response from the highest priority slave the lowest numbered slave device with more than one slave device For example in a setup in which port 7 is the maste...

Page 13: ...t ports 1 through 8 to all master and slave devices using 9 pin D sub M connector cables Not all ports have to be connected The power cord is not shown in Figure 5 2 If RS 232 control is required connect a PC via the null modem adapter when using the Kramer Control software or other controller as described in Section 4 1 3 If RS 485 control is required connect a cable to the RS 485 terminal block ...

Page 14: ...not required for this unit In the rare case where a controller requires hardware flow control short pin 1 to 7 and 8 and pin 4 to 6 on the controller side Method B Figure 7 Connect the RS 232 9 pin D sub port on the unit via a straight flat cable to the null modem adapter and connect the null modem adapter to the RS 232 9 pin D sub port on the PC The straight cable usually contains all nine wires ...

Page 15: ...the RS 485 port on the rear panel of the VS 4228 Connect the G pin on the RS 485 port of the PC to the G pin on the RS 485 port on the rear panel of the VS 4228 4 3 Cascading Multiple Units You can cascade up to eight individual VS 4228 units to switch up to 64 master slave devices using either the RS 232 see Section 4 3 1 or RS 485 see Section 4 3 2 interfaces When cascading two or more devices y...

Page 16: ... pins 2 to 2 3 to 3 and 5 to 5 Figure 8 Cascading Units via the RS 232 Control Interface 4 3 2 Cascading Via the RS 485 Control Interface To connect an RS 485 connector on one VS 4228 unit to an RS 485 connector on another unit 1 Connect the PIN on the first VS 4228 unit to the PIN on the second VS 4228 unit 2 Connect the PIN on the first VS 4228 unit to the PIN on the second VS 4228 unit ...

Page 17: ...mer Tools VP 43xl Interface Converter connect the PC s 9 pin D sub COM port to the RS 232 in 9 pin D sub F port on the VP 43xl Next connect the RS 485 port on the VP 43xl to the RS 485 ports on the VS 4228 units Figure 9 Cascading Units via the RS 485 Control Interface Note When cascading multiple units using the RS 485 interface you must connect a 100Ω terminator between the and pins of the last ...

Page 18: ...deo Player 2 Port 8 Video Recorder The following examples show how to operate the VS 4228 1 To connect the PC to Video Player 2 Press SLAVE 4 then MASTER 1 The following status displays 2 To connect the VTR Serial Controller to Video Player 1 and PC to the Video Recorder Press SLAVE 3 MASTER 2 SLAVE 8 and MASTER 1 The following status displays 3 To connect the PC to all slaves Press ALL then MASTE...

Page 19: ...ating the VS 4228 4 To disconnect the PC from the Video Player 2 in the previous status Press SLAVE 4 and OFF The following status displays 5 To disconnect all masters Press ALL then OFF The following status displays ...

Page 20: ... STANDARDS COMPLIANCE TIA EIA 422 B and SMPTE 207M OPERATING TEMPERATURE 0 to 40 C 32 to 104 F STORAGE TEMPERATURE 40 to 70 C 40 to 158 F HUMIDITY 10 to 90 RHL non condensing DIMENSIONS 19 x 7 x 1U W D H rack mountable POWER CONSUMPTION 032V AC 50 60 Hz 115V AC U S A 10VA WEIGHT 2 2kg 4 88lbs approx INCLUDED ACCESSORIES Power cord Windows Control Software Specifications are subject to change witho...

Page 21: ...28 Default Communication Parameters 7 Default Communication Parameters RS 232 Protocol 2000 Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity None Command Format HEX Example Output 1 to Input 1 0x01 0x81 0x81 0x81 ...

Page 22: ... 20 10 13 10 20 10 18 10 20 10 18 10 20 10 18 10 20 10 18 10 20 10 11 10 M 3 20 13 10 10 20 13 10 10 20 13 18 10 20 13 18 10 20 13 18 10 20 13 18 10 20 13 11 10 M 4 20 18 10 10 20 18 10 10 20 18 13 10 20 18 18 10 20 18 18 10 20 18 18 10 20 18 11 10 M 5 20 18 10 10 20 18 10 10 20 18 13 10 20 18 18 10 20 18 18 10 20 18 18 10 20 18 11 10 M 6 20 18 10 10 20 18 10 10 20 18 13 10 20 18 18 10 20 18 18 10...

Page 23: ...20 VS 4228 Hex Codes ...

Page 24: ...isit our Web site where updates to this user manual may be found We welcome your questions comments and feedback Web site www kramerelectronics com E mail info kramerel com P N 2900 002033 Rev 5 SAFETY WARNING Disconnect the unit from the power supply before opening and servicing ...

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