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Troubleshooting 

 

16 

9.3   Audio Signal 

Problem 

Remedy  

No audio at the output 

device, regardless of 

input selected 

1.  Confirm that your sources and output device are powered on and 

connected properly. Audio signals connected to the input of your 

switcher should be properly wired to the output of your source. Audio 

signals connected to output of your switcher should be properly wired 

to the input of your switcher or recorder.  

2.  Confirm that any other switchers in the signal path have the proper 

input and/or output selected. Pay special attention to input switchers 

that may be built into your switcher or recording device. 

Audio level is too low 

1.  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.  

2.  Check level controls located on your source input device or output 

display or recorder. 

The switcher switches 

the video but does not 

switch the audio. 

One of the audio cables leading to the main board is disconnected and 

cannot transfer the switch command to the video. 

The switcher will not 

switch via the RS-485 

control 

The RS-485 control is fed by a flat-cable from the upper audio board to a 

socket on the main board. One of its connectors may be disconnected. 
Turn OFF the mains switch, remove the power cord from the mains socket 

and carefully remove the cover of the switcher. Verify that all the flat cables 

from the main board to 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. 

(Perform this firmly but with care). 

9.4  Control 

Problem 

Remedy  

No control of switcher  

1.  Confirm that the connecting cable is wired for pins 1-9 straight 

through. 

2.  Confirm that all dipswitches on the switcher have been set properly. 

Keep in mind that if you are only controlling one switcher on a 

specific port, that switcher must be assigned the ID of  “1”. 

3.  If controlling more than one switcher on a single port, all switchers 

must be of the same type and power to all switchers must be on. 

No control of switcher 

from PC software 

1.  Confirm the wiring of the connecting cable. Cable length should not 

exceed 25 feet. 

2.  Confirm that all dipswitches on the switcher have been set properly. 

Keep in mind that if you are only controlling one switcher on a 

specific port, that switcher must be assigned the ID of  “1”. 

3.  If controlling more than one switcher on a single port, all switchers 

must be of the same type and power to all switchers must be on. 

4.  Confirm that the baud rate of your computer COM port is set to the 

same as that of your switcher (9600-Baud). Confirm that the proper 

COM port is selected in the control software. 

5.  Confirm that bi-directional communication is enabled on all switchers. 
6.  With custom software, do not send multiple commands at the same 

time. The switcher must complete one command before receiving 

another. 

7.  Confirm that the computer you are using supports true RS-232C 

protocol. Computers, such as the Apple Macintosh do not! 

 

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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