Lindy 39394 User Manual Download Page 20

English Manual 

 

LINDY KVM Extender C5 PRO-300 Installation and Use     

page 20 

5.7 Video compensation, Image controls - sharpness and brightness 
 

The Extender C5 incorporates special controls to compensate for losses incurred within long cable links. Using 
these controls you can adjust the picture sharpness and brightness to improve your remote picture quality. 
The need for image control adjustment is best discovered when viewing high contrast images with vertical 
edges, such as black lines on a white background. When doing so, if you notice that the screen image is ‘fuzzy’ 
or ‘dark’ then the image controls may be able to solve this condition. 
 
Note: If the high contrast images exhibit shadows with separate colours, then there may be a skew problem 
which requires a different image adjustment - see the ‘Skew adjustment’ section for details. 
 
 

To display a suitable high contrast image 
 

The best way to clearly view the effects of compensation is to display 
a high contrast image, with vertical edges, on the screen. 
 

 

Open a word processor, type the capital letter ‘H’, or ‘M’ and 

increase the point size to 72 or higher. For best results, the 
background should be white and the character should be black. 

 

A BLACK shadow on the right of the character indicates 

UNDER compensation. 

 

A WHITE shadow on the right of the character indicates OVER 

compensation. 

 

 

 
To use the image controls 

1.  Simultaneously, press the hotkeys (by default, <CTRL> and <SHIFT> along with <RETURN>) to enter 

configuration mode.  
The three keyboard indicators (‘Num Lock’, ‘Caps Lock’ and ‘Scroll Lock’) will now begin to flash in 
sequence. The speed of the sequence indicates the level of the sharpness adjustment currently applied: the 
slower the rate, the lower the level of sharpness being applied. 
 

2.  While viewing the displayed high contrast screen image, use the following keys to adjust the controls: 

 

Sharpness:

    

User 

CURSOR UP

 and 

DOWN

 for fine 

adjustment, and 

PAGE UP

 and 

DOWN

 for coarse 

adjustment. 
There are 255 sharpness levels (one coarse step 
jumps 10 levels). 
To autoset sharpness: Press 

<F> <2>

 

<RETURN> 

to make the module calculate and apply an 
automatic compensation level - you can use this 
as a starting point for your fine tuning.  
 
Note: If the monitor goes blank and switches off 
(due to oversetting the sharpness adjustment) 
press the 

<HOME>

 key to restore. 

Brightness:

  User 

CURSOR LEFT

 and 

RIGHT

 for adjustment.  

There are 255 brightness levels. 

 

3. When no shadows are visible and the displayed images have crisp edges, press <RETURN> to exit 

configuration mode and permanently save all settings. The new compensation setting will be stored, even 
when power is removed or if a complete reset is initiated. The setting should not require further changes 
unless the cabling arrangement is altered. 

 

 
 
 

Summary of Contents for 39394

Page 1: ...NDY ELECTRONICS LIMITED LINDY ELEKTRONIK GMBH FIRST EDITION September 2005 KVM Extender C5 PRO 300 User Manual English LINDY No 39394 www lindy com Tested to Comply with FCC Standards For Commercial U...

Page 2: ...es plugged into the wall outlet does not exceed the wall outlet s ampere rating Warranty information LINDY warrants that this product shall be free from defects in workmanship and materials for a peri...

Page 3: ...C5 module 10 3 Connections 11 Connections at the LOCAL module 11 3 1 KVM A multi cable connection 11 3 2 Serial cable connection 12 3 3 Twisted pair connection 12 Connections at the REMOTE module 13...

Page 4: ...Mouse restoration 18 5 7 Video compensation Image controls sharpness and brightness 20 5 8 The Skew Compensation Adjustment 22 5 9 Miscellaneous settings 23 6 Flash upgrade procedure 23 6 1 Getting th...

Page 5: ...e two modules is made via Category 5 or higher twisted pair cabling There is no particular advantage in using higher specification Category 6 cables On the contrary it may even result in unacceptable...

Page 6: ...English Manual LINDY KVM Extender C5 PRO 300 Installation and Use page 6 1 1 Supplied items Power and signal activity indicator Optional Power supply input Power and signal activity indicator...

Page 7: ...on and Use page 7 2 Installation The installation of the Extender C5 set is straightforward and can best be achieved in most cases by following these stages for each module Check or set the configurat...

Page 8: ...e mode This allows any pre configured passwords to be altered particularly useful when they have been lost or forgotten See section 5 5 Password override LOCAL Switch 2 OFF Normal operation ON Set tra...

Page 9: ...OFF positions and this will produce normal operation REMOTE Switches 2 and 3 Switches 2 and 3 determine which two keyboard keys when pressed in unison are to be designated as hotkeys Hotkeys signal to...

Page 10: ...the underside of the module s Rack mount Note The module switches are not accessible once it is inserted into the rack therefore check all settings before insertion 1 Place the rack securing plate av...

Page 11: ...module are made via the supplied multi cable This has a single connection to the module is two metres in length and splits out to the keyboard video mouse microphone and speaker ports of the system 1...

Page 12: ...e 2 Connect the other end of the serial link cable to the appropriate serial port of the computer system 3 3 Twisted pair connection The link between the LOCAL and REMOTE modules is made via twisted p...

Page 13: ...OTE module 3 Insert the keyboard lead into the green mini DIN socket on the REMOTE module 3 5 Twisted pair power and serial connections 1 Insert the connector from the twisted pair cable link into the...

Page 14: ...of this port LOCAL switch 3 OFF microphone LOCAL switch 3 ON stereo line in 1 Connect the microphone or stereo line input plug into the REMOTE module microphone socket Note Ensure that the setting of...

Page 15: ...me shadows to the right of high contrast screen characters This can be caused by an incorrectly selected sharpness setting and it may be necessary to make adjustments to correct this Please see Image...

Page 16: ...ion mode and you can affect the following settings Password setting allows you to lock the remote module to prevent unauthorized system access Mouse restoration and settings allows you to restore mous...

Page 17: ...ashing in sequence to show that the module is ready to receive a new command 2 Press RETURN The three indicators will return to their normal states 5 4 Password setting Password protection allows you...

Page 18: ...owever if this is not possible then you need to hot plug the Extender C5 modules while power is still applied to the system There is not normally a danger of damage to the system however when mouse co...

Page 19: ...a short distance and check for appropriate onscreen cursor movement If the mouse cursor darts erratically around the screen then cease moving the mouse This is an indication that the chosen restore f...

Page 20: ...A WHITE shadow on the right of the character indicates OVER compensation To use the image controls 1 Simultaneously press the hotkeys by default CTRL and SHIFT along with RETURN to enter configuratio...

Page 21: ...best results a test pattern is provided and this should be displayed when using skew adjustment To use skew adjustment 1 Insert the supplied Installation CD ROM into the CD player of the computer 2 W...

Page 22: ...ned 8 When all colours are correctly aligned press RETURN to exit configuration mode and permanently save all settings Note Once you have made a skew adjustment it may be necessary to re adjust the im...

Page 23: ...t Please contact the LINDY Support team in your country by email telephone or contact form from the LINDY website See www LINDY com for all LINDY offices and contact information world wide Decompress...

Page 24: ...e My Computer option copy the downloaded and decompressed files from your computer to the floppy diskette 6 3 Reconfigure the LOCAL connections and begin 1 On the computer from which you will run the...

Page 25: ...connect the mains lead to a nearby wall socket 5 Switch on the computer The upgrade process will start automatically and confirmation will be given on screen 6 Switch off the computer and disconnect...

Page 26: ...keys are pressed or the mouse is moved check that the indicators flicker if they do not then there could be a twisted pair link problem or a problem with one of the modules Check that the Category 5...

Page 27: ...The following related C5 Series items are available LINDY C5 Series Rack mount chassis Part No 39388 This 19 chassis allows multiple C5 Series modules to be neatly arranged within a standard cabinet...

Page 28: ...en the equipment is operated in a commercial environment Operation of this equipment in a residential area may cause interference in which case the user at his own expense will be required to take wha...

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