It's just how Trango designed the Giga. As I mentioned in an off list email, the "modem" that calculates the Giga's RSSI is located in the IDU and not the ODU. This is why the IF cable is so critical with the Giga. There were/are reasons why Trango designed the Giga this way (regarding future product enhancements utilizing multiple "modems" in the IDU for greater throughput capacity), but it would be best that you take it up with Trango if you are interested in that.
You need to know what your expected RSSI for the path is supposed to be. That doesn't mean the link will always end up there, but it gives you a starting point. For example we have a link that one end is behind a metal based glass. That link is about 10db off from expected RSSI due to the glass attenuation. Once we accounted for this by adjusting our target rssi we have a much more solid link. The bottom line is, while it may be frustrating for the first time Giga user to get their initial Giga up and running the Giga has proven itself as a solid product. We have several deployed, continue to order them and have been pleased with their performance. Yes, the Apex is an all ODU design and while we haven't deployed an Apex yet, I understand the configuration is a bit more simple. We expect to have a couple Apex's on hand in the next week or two and I'll know a lot more about the Apex once we have them hung. Best, Brad -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Gino Villarini Sent: Saturday, April 04, 2009 2:30 PM To: WISPA General List Subject: Re: [WISPA] Trango Giga Problem That's why I asked, it doesn't completely explain how it works, for example Rssi on end 1 is -39 , mse is -30 targetrssi is -39 Why in the heck if I change the target rssi to -35, the "real rssi changes too??? To -35 ...?!?!?! MSE still is -30 I have not changed the power on the other end and atpc is off ...wtf? BTW: The Apex being an all outdoor unit, it's the same? Got the Apex user manual handy? Gino A. Villarini g...@aeronetpr.com Aeronet Wireless Broadband Corp. tel 787.273.4143 fax 787.273.4145 -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Brad Belton Sent: Saturday, April 04, 2009 11:03 AM To: 'WISPA General List' Subject: Re: [WISPA] Trango Giga Problem MSE concept explained on Page 18 of the manual or page 20 of this pdf... How is the link looking now after adjusting power, target rssi and cable loss settings? Best, Brad -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Gino Villarini Sent: Saturday, April 04, 2009 8:39 AM To: WISPA General List Subject: Re: [WISPA] Trango Giga Problem How the mse would show interference? Gino A. Villarini g...@aeronetpr.com Aeronet Wireless Broadband Corp. tel 787.273.4143 fax 787.273.4145 -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Tom DeReggi Sent: Friday, April 03, 2009 7:41 PM To: WISPA General List Subject: Re: [WISPA] Trango Giga Problem Also, don't assume its not interference. Licensed gets interference to. If your MSE is showing Interference its very possible that is exactly what you are having. You may need to briefly/temporarilly change channels to verifiy. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Brad Belton" <b...@belwave.com> To: "'WISPA General List'" <wireless@wispa.org> Sent: Friday, April 03, 2009 2:47 PM Subject: Re: [WISPA] Trango Giga Problem > Going to need lots more info to be able to help. > > Cable run length and type of cable used. > What is your expected RSSI per your path analysis What is your > targetrssi set to What are your cableloss settings What is your power > set to Run a link 10 command from both sides and provide results What > version software are you running on both sides > > Maybe the best thing to do is run a sysinfo command on both ends and send > me > the results off list. > > Best, > > > Brad > > > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Gino Villarini > Sent: Friday, April 03, 2009 1:38 PM > To: WISPA General List > Subject: [WISPA] Trango Giga Problem > > I have a 2 mile 18 ghz link using Trango Giga, Im starting to drop > packets, auto rate has dropped speed to qpsk, still MSE and BER is being > affected sometimes on one end or both ...ATPC is on, rssi is -35 on both > ends > > anyway to tell where the problem is? > > > Gino A. 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