Black Box AC504A-WP Benutzerhandbuch

 

 

3. Troubleshooting 

 

1.  Fuzzy, blurry, or ghosting image at remote location 
 
If you have a stable image but it looks blurry (object or character edges 
are smearing), adjust the compensation on the receiver. If you still have 
a fuzzy image, try reducing the refresh rate and/or the resolution setting 
of the video. For Best results use either low-skew cable (such as 
Belden Brilliance® VideoTwist), or Cat5 (instead of Cat6). 

2.  Shaking image or periodically blanking monitor 
 
A strong electromagnetic noise field can cause instability in the signal. 
Usual sources of this form of noise coupling are high current AC lines 
or other high-density data and/or control cables that run adjacent to and 
parallel with a substantial length of the CAT5 cable.   

To eliminate this, separate the Cat 5 cable of Mini-CAT5 Extender 
from the interfering source or use shielded CAT5 cables. Usually 
separating the CAT5 cable from the interfering source by a few inches 
is sufficient to eliminate this problem. 

If the length of Cat5 run exceeds 300 feet you may need an additional 
power supply at the receiver.  

If you determine that your extender is malfunctioning, do not attempt 
to repair the unit. Contact Black Box at 724-746-5500. Before you do, 
make a record of the problem. We will be able to provide more 
efficient and accurate assistance if you have a complete description. 

If you need to transport or ship your extender: 

• Package it carefully. Use the original container if possible. 
• Before you shipping the unit, contact us to get a Return 

Authorization (RA) number.