User guide

INSTALLATION
4
CONFIGURATIONOPERATION
FURTHER
INFORMATION
INDEX
TIPS FOR ACHIEVING GOOD QUALITY LINKS
Due to the large volumes of data that must be transferred between the local and remote
modules, every AdderLink XD150 installation is highly dependent upon good quality
CATx cable links. Video performance is particularly reliant on high speed communication
channels. For this reason, the AdderLink XD150 units test the link quality to determine
which of two transfer modes can be supported: High rate or Long reach.
The main factors that affect link quality are:
• The length and type of CATx cable used,
• The number, length and type of intermediate patch connections,
• The quality of the cable terminations.
Patch cables
As mentioned above, patch links affect performance. For each additional break/patch
within a run, you will need to reduce the distance given above by roughly 5 meters.
For best results, patch cables should be of type CAT 7a and be less than 2 meters in
length. If patch cables are greater than 2 meters, then they must be CAT 7a.
Adder recommend the following CAT 7 shielded, foiled, twisted pair cables:
• Flexible patch cable Daetwyler 7702 (26AWG S/FTP)
• Bulk cable Daetwyler 7120 (23AWG S/FTP)
Long reach mode
•CAT7a,CAT6aorCAT5esolidcorebulkcable
•24AWG(Ø0.5106mm)orthickercores
•U/UTP,F/UTPorbetterscreening
•MaximumoftwoCAT7apatchconnections
Please see Appendix 2 - Link cable interference protection
for details about cable screening and shielding.
High rate mode
•CAT7asolidcorebulkcable
•23AWG(Ø0.574mm)orthickercores
•S/FTP,S/STPorPiMFscreening
•MaximumoftwoCAT7apatchconnections