Hey AF, Yes, correct there are no FSK RF changes, just an accidental Frame Calculator Web Page change. I have found the bug and this will be fixed in 13.4.1. Sorry about this accidental change.
For those that want more information: The AP starts actually receiving immediately before the “Max Range” time is allocated in the frame, for SMs that are at the max distance away. Even though the data from the SM’s won’t appear until later in the frame, this allows the AP to receive registration requests from SM’s that don’t know how far away they are. In 13.3/13.4 the frame calculator page was accidentally changed to show this time. In 13.4.1 it will go back to the old time and be “AP Receive Data Start”. This extra time that was included in 13.3/13.4 does not need to be sync’d, so the bigger number can be used. So use a 13.1.3 frame calculator page in the meantime. George, you were exactly right. Craig, Thanks for pointing this out. Sorry for the delay, but I wanted to find the bug before I could answer with 100% certainty. Ken, to answer your question I was in there changing code in 13.3 to be able to sync 5 ms frame with PMP 320 product. I enhanced the Frame Calculator Tool for OFDM to show what the times are for the antenna port of the radio, so more exact synchronizing could be done. There’s good parts and bad parts to having a common code base, and this is one of the bad parts. ☺ I would turn around and say where was our beta testers?!? We had a beta open for months! ☺ 13.4.1 beta anyone? ☺ Apologies again and we appreciate you guys and we appreciate your feedback. Enjoy your day, Charlie Galik Principle Staff Software Engineer Cambium Networks Community Forum<http://community.cambiumnetworks.com/> From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Thursday, July 16, 2015 8:49 AM To: af@afmug.com Subject: Re: [AFMUG] pmp100 pmp450 sync calculator issues Can you tell I was a HW engineer? And then a PHB*? Software was just a SMOP**. Everything is easy when someone else has to do it. And mistakes are obvious once someone has pointed them out. ---------- * Pointy Haired Boss ** Small Matter Of Programming From: Matt Mangriotis<mailto:matt.mangrio...@cambiumnetworks.com> Sent: Thursday, July 16, 2015 7:01 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] pmp100 pmp450 sync calculator issues Oh Ken… you think this is so easy. ☺ From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Wednesday, July 15, 2015 8:43 PM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] pmp100 pmp450 sync calculator issues Why was someone even in there changing code? And whatever happened to automated regression testing? From: George Skorup<mailto:geo...@cbcast.com> Sent: Wednesday, July 15, 2015 8:21 PM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] pmp100 pmp450 sync calculator issues I updated a 900 AP. Looking at /engineering.cgi on this 13.4 AP and a 13.1.3 AP, the current frame configuration matches. The frame calculator is definitely broken. I see what the difference is now. The new calculator shows max range air delay as one-way, while the previous calculator shows round-trip air delay. Somebody forgot to do math somewhere. So the new calculator needs one-way air delay added to the AP's Rx Start value. Not the end of the world, but yes, confusing. On 7/15/2015 5:04 PM, George Skorup wrote: My guess is it's just the calculator page code that got mucked up, not the actual running RF operation/framing. Go to one AP that is on 13.1.3 and another that's on 13.4. Log in and change the URL to /engineering.cgi and look at the "Current Frame Configuration" on both radios. They should match. If they don't then... uh oh. I don't have enough stuff updated yet to do this myself. On 7/15/2015 3:47 PM, Craig Schmaderer wrote: This case has now been sent up to upper level engineers.� I guess this might be a huge bug, no one can still tell me what calculator is the correct value or if the new software is even running the right time when you upgrade.� I would be careful upgrading radios if you need to time your 100 and 450 together until this gets resolved.�� � Craig R. Schmaderer CEO | Skywave Wireless, Inc. Ph: 402-372-1975 | Fax: 402-372-1058 Direct: 402-372-1052 � From: Af [mailto:af-boun...@afmug.com] On Behalf Of George Skorup Sent: Thursday, July 09, 2015 6:13 PM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] pmp100 pmp450 sync calculator issues � WTF. So is it the new one or the old one that's wrong? I just ran your dimensions on a 450 AP running 13.2.1. I got the same as your FSK on 13.1.3. Apparently something changed after 13.2/.1. On 7/9/2015 2:34 PM, Craig Schmaderer wrote: So I have a ticket open with cambium on this issue.� Have you guys noticed the fsk calculator on pmp100 radios with software 13.1.3 and lower give you different results than the fsk calculator on a 450 radio running 13.3? I can�t believe cambium never caught this but the tech acts like wow, that�s weird?�� Really?�� So I am trying to figure out if it is an error, or if it matters the software version, that said if people start upgrading to 13.4 on 100 your calculators will change, at least with my settings, so be careful to check your settings again after the upgrade.� I will post my findings with support.� Here is a screen shot of the same radio with 13.1.3 and than with 13.4, you will notice that the difference in software changes the ap start receive time by more than 600.� I would assume that you really don�t want to be off that much.� Any insight on this would be great! � [X] � � [X] � Craig R. Schmaderer CEO | Skywave Wireless, Inc. Ph: 402-372-1975 | Fax: 402-372-1058 Direct: 402-372-1052 � �
