I’m in agreement with Jack (as stated below). KISS: Keep It Simple, Sir!
And for the record.....
We have two aPPOs doing a 17.9 mile backhaul link with the plain ol’ standard issue _12v_ PowerShot on both.
One run of Ethernet cable is 175 feet; the other is 163 feet and both units have been working for almost 3 months without any problems with the PowerShot/power supply (however, the config. on the radios is a different story, but we are not addressing that in this e-mail).
The point is....getting “power” to the radio has never been an issue with the standard/supplied Power Shot from our perspective. I guess we have been fortunate (knocking on wood).
-George M. Walden
on 6/12/03 9:49 AM, Jack Berridge at [EMAIL PROTECTED] wrote:
Sounds interesting....and scary. I'm not an EE but when you start talking about an "intelligent powershot" that is capable of making decision based on "sensing the cabling length" it scares me. This scares me because "intelligent devices" tend to die (fail) more often than a good old dumb device that's only purpose is to provide a specific (designed/engineered) amount of power. To me, I see an intelligent device as another point of failure just waiting to happen. Whereas, if we had a straight 18v power supply (powershot) it's either working.....or not. No intelligence, no extra features or sensors to worry about failing --- just good old power source that is capable of supplying 18v as designed/engineered. Why do you feel the need to have an intelligent powershot versus one single straight 18v that works for short and/or long Ethernet cable runs?
Thanks.
Jack
At 12:10 AM 6/12/2003 +0800, you wrote:
This is going to change. As I mentioned earlier, we are working to have higher power voltage adaptor and with intelligent powershot that can dynamically adjust the power supply based on cable length sensed. So it will be one universal AC power adaptor.-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Berridge Sent: Wednesday, June 11, 2003 9:37 PM To: '[EMAIL PROTECTED]' Subject: RE: [smartBridges] POE, voltage range
Alex
sB Tech Support
Curious. If you highly recommend using smartBridges power supply for smartBridges devices, why doesn't smartBridges have a power supply and PoE solution that works to the maximum Ethernet cable specs (~300 feet)? Why even have the 12v power supply? Why not have an 18v power supply that will work with the 50' or less cable runs as well as the longer cable runs? At least for the outdoor (WISP type) solutions. Other vendors we work with use the higher end (18v, even 24v) power supplies and it works for the short as well as the long runs. It just seems that the 12v has caused your user community more problems which are resolved by going to 15v or 18v solutions......why not have an 18v be the normal (default) solution for outdoor smartBridges solutions? Thanks.
Jack
PM 6/11/2003 +0800, you wrote:
If you are using any third party power supply, please use the regulated DC voltage power supply. We are highly recommended to use our smartBridges Power supply for our devices. If the Ethernet cable length exceeds more than 50 meters, then only 18V is recommended. Seeni, SB support -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of phantam Sent: Wednesday, June 11, 2003 9:57 AM To: '[EMAIL PROTECTED]' Subject: RE: [smartBridges] POE, voltage range Dynamic power sounds intriguing.
From: Mark Koskenmaki [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 10, 2003 7:32 PM To: [EMAIL PROTECTED] Thank you. I have no fears of even reaching 15V, but wanted to make sure that even if somehow things got to 15.5 or 16, it would be ok. Thanks again. Mark NEOFAST.NET North East Oregon FAST Net mark(at)neofast.net ----- Original Message ----- From: Alex Wong <mailto:[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Tuesday, June 10, 2003 11:29 AM Subject: RE: [smartBridges] POE, voltage range We recommend 18V as max athough can be higher. Pls refer to this link for more details. http://www.smartbridges.com/new/products/ps.php We are also in the development stage of having a dyanmic power supply that can automatically adjsut the power supply based on the cable sense. Alex sB Tech Support -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Koskenmaki Sent: Wednesday, June 11, 2003 12:03 AM To: '[EMAIL PROTECTED]' Subject: [smartBridges] POE, voltage range What's the upper limit for voltage, for POE on the ABO and APPO? Thanks NEOFAST.NET North East Oregon FAST Net mark(at)neofast.net --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.488 / Virus Database: 287 - Release Date: 6/5/03
