We have a point to point link currently using RB532 with SR5 cards. The link will sync up within 10 seconds after the radios are rebooted. However, when we try and use an XR5 card it takes over 2 minutes before the signal actually becomes stable. The first two minutes the signal comes up, and then dies, and then comes up, and then dies over and over. After two minutes, the signal finally comes up and stays up.
We tested this on our test bench and saw the same results.
AS Bill mentioned, you have to throttle back the XR series cards.
I ran into this kind of problem using an XR2, try setting your TX to 7db and work from that point to attain the best throughput and reliability.
The XR5 spec sheet says it has a 10db offset in Mikrotik. It is currently running at 18db, which that sheet shows as the maximum. Why would I have to throttle it back?
OK if your TX power is set to 18db right now… according to the XR specs really its ouput is 28db
When you set it to 7db you really are attaining 17db of output.
You don’t want to drive the full power of the cards to begin with, by the time you couple the 28db of the card with what-ever db rating is on your AP antenna you may well be over the legal limit.
Too much of anything is bad power, sex, drugs, politics, etc,.
You must turn the power down to establish a reliable connection initially between your AP and SU, once you have established a connection run throughput test to see what setting provides the best throughput.
Select Card Rates, then set the value to 7db on the AP and 14db on your SU, this should enable a connection between the two devices.
