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Controlling the Switcher 

 

12 

7.3  Adding Inputs 

Up to eight 

OMX-SW6x1B

 switchers can be interconnected to function as a 

12x1 or an 18x1 switcher, as follows: 

1.  Make sure that jumper J35 in at least one of the switchers is set to its factory 

located position. If necessary, carefully remove the covers of the switchers to 

do so. 

2.  Connect a straight, 9-wire flat cable from the "To Next" DB-9 connector on 

the first switcher to the "To Next" DB-9 connector on the second switcher, 

from the second to the third and so on, until all the required switchers are 

interconnected. Make sure that the interconnecting lengths of cable are as short 

as possible. 

3.  Interconnect the switchers via their RS-485 ports ("A" to "A", "B" to "B", and 

so on). 

4.  Assign a unique machine number to each of the switchers (see Table  ).  
5.  On all the units, set the Dipswitch "Reply" option to ON. 
6.  To feed the sync information from one of the units to all the others, 

interconnect the units via their "To Next" connectors using a flat cable. In this 

case, jumper J34 must be set in its factory located position in the unit with the 

Sync source, but in its alternate position in the others. 

7.  For RS-232 control of the system, connect the PC to the Master switcher via 

the null modem adapter. Each switcher in the configuration should be 

allocated a unique machine number and the "Reply" option should be to “ON” 

(see Table  ). The system may also be controlled via RS-485. 

8.  Connect the sources to the appropriate switcher inputs.  
9.  Connect the power cable of each switcher to the mains supply and turn ON the 

power on each switcher. 

10.  You now have a 12 or 18, input switcher complex, with one output. 

7.4  Video Component and YC Switching 

An important application for interconnected switchers is in professional 

component video switching, where smooth switching is required, free from 

transient effects. Four switchers of the same type are required for RGBS 

systems, three for RGB or YUV systems, and two for YC systems. The 

following describes how to set up the RGB video component application with 

five professional video sources, each with Red, Green and Blue (RGB) 

outputs (Sync on Green).  

Summary of Contents for OMX-SW6x1B

Page 1: ...OMX SW6x1B...

Page 2: ...Outputs 10 7 3 Adding Inputs 12 7 4 Video Component and YC Switching 12 7 5 Controlling Several Independent Switchers via a Single PC Port 13 8 Technical Specifications 14 9 Troubleshooting 14 9 1 Pow...

Page 3: ...rval Switcher Features 4 Table 2 Rear Panel OMX SW6x1B 6x1 Vertical Interval Switcher Features 4 Table 3 Recommended Ambient Temperature and Humidity Range 5 Table 4 Dipswitch Settings 8 Table 5 Techn...

Page 4: ...rval ensures glitch free switching when sources share a common reference sync In addition the OMX SW6x1B Has a bandwidth of 250MHz that ensures transparent performance even in the most critical produc...

Page 5: ...ertical Interval Switcher 2 4 Your OMX SW6x1B 6x1 Vertical Interval Switcher Figure 1 illustrates the front and rear panels of the OMX SW6x1B Tables 1 and 2 define the front and rear panels of the OMX...

Page 6: ...Your OMX SW6x1B 6x1 Vertical Interval Switcher 3 Figure 1 OMX SW6x1B 6x1 Vertical Interval Switcher...

Page 7: ...L IN 1 6 Terminal Block Connectors Connect the left stereo audio input signals from 1 to 6 8 OUT Left Terminal Block Connector Connect to the left channel audio output 9 RS 485 Terminal Block Port For...

Page 8: ...enough air will still flow around the machine 3 The machine is placed straight in the correct horizontal position 4 You do not overload the circuit s When connecting the machine to the supply circuit...

Page 9: ...s as follows The AUDIO L inputs2 AUDIO L IN 1 6 The OUT left audio output and the RS 485 OUT RS 485 BA The OUT right audio output OUT 4 Set the dipswitches see section 6 2 5 If required connect a PC t...

Page 10: ...modem adapter with a 9 wire flat cable to the RS 232 DB9 port on your PC To connect without using a Null modem adapter Connect the RS 232 DB9 port on your PC to the RS 232 DB9 rear panel port on the O...

Page 11: ...chine 7 Slave ON or OFF OFF OFF ON Machine 8 Slave ON or OFF OFF OFF OFF Note The Slave Reply settings are all ON or all OFF depending on the requirements of the system The Master Reply setting is alw...

Page 12: ...ideo source for all the switcher inputs so that Vertical Interval Switching can be assured The jumpers are factory located for an External Sync source If the sync of the video source on Input 1 is pre...

Page 13: ...re than 30 feet in length 6 If several machines are looped interconnect as described in the relevant sections from 7 2 to 7 5 7 Connect the power cable of each switcher to the mains and turn the power...

Page 14: ...rd switcher to obtain a 6x3 switcher and so on In such cases relocate to their alternate position all the input jumpers in all the switchers except the last so that all the lines are properly terminat...

Page 15: ...onnectors using a flat cable In this case jumper J34 must be set in its factory located position in the unit with the Sync source but in its alternate position in the others 7 For RS 232 control of th...

Page 16: ...ts J20 in the R and the B units and J21 in the B unit To synchronize using an external sync signal configure R and B as described above but this time daisy chaining from G s ext sync Connect the exter...

Page 17: ...s underside accessible trimmers for video gain 1 2 to 1 8dB Luma cable EQ 0 to 1 3dB RS 232 RS 485 IR remote dry keyboard extension SWITCHING Vertical interval NON LINEARITY 0 1 AUDIO THD NOISE 0 013...

Page 18: ...der Weak switcher input signals The switcher contains two internal trimmers accessed via two holes in the base of the switcher These allow if necessary to adjust switcher output signal level For examp...

Page 19: ...the control board from the audio board to the main board and from the switchboard to the main board are undamaged and properly connected NOTE Sometimes connectors work loose and have to be reinserted...

Page 20: ...something wrong with the source or cable assembly Check them The switcher turns ON but will not switch at all One of the two flat cables leading from the main board to the control board may be discon...

Page 21: ...101 N3N2N1N0 is the binary value of the input to be selected i e N3N2N1N0 0111 is equivalent to pressing switch 7 on the front panel Several special codes are also valid N3N2N1N0 1101 requests that t...

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