Home
Reading
Searching
Subscribe
Sponsors
Statistics
Posting
Contact
Spam
Lists
Links
About
Hosting
Filtering
Features Download
Marketing
Archives
FAQ
Blog
 
Gmane
From: Eric Cobb <Eric_Cobb <at> tripplite.com>
Subject: Re: UPS Product additions to NUT HCL list for compatible Tripp Lite UPS systems
Newsgroups: gmane.comp.monitoring.nut.user
Date: Wednesday 30th October 2013 15:29:59 UTC (over 3 years ago)
Hello Mr. Leppe,

See the attached excel file that covers the current Tripp Lite HID
compatible UPS systems. There is also an attached Word document covering
the UPSC / UPSCMD / UPSRW information from the specific UPS systems. Let me
know if this is adequate to get our additional HID compatible products
added to the NUT HCL listing.


Tripp Lite
Eric K. Cobb
Product Management Specialist



1111 W. 35th Street   |   Chicago IL 60609 USA
773.869.1203   |   Fax 773.869.1935
Email: [email protected]
Website: www.tripplite.com

This message is for the addressee┬┤s use only. It may contain confidential
information. If you receive this message in error, please delete it and
notify the sender. Tripp Lite disclaims all warranties and liabilities, and
assumes no responsibility for viruses which may infect an email sent to you
from Tripp Lite and which damage your electronic systems or information. It
is your responsibility to maintain virus detection systems to prevent
damage to your electronic systems and information.




-----Original Message-----
From: Charles Lepple [mailto:[email protected]]
Sent: Tuesday, October 15, 2013 8:33 PM
To: Eric Cobb
Cc: nut-upsuser list
Subject: Re: [Nut-upsuser] UPS Product additions to NUT HCL list for
compatible Tripp Lite UPS systems

On Oct 15, 2013, at 3:40 PM, Eric Cobb wrote:

> My name is Eric Cobb and I am a Product Specialist with Tripp Lite. We
have tested your latest NUT distributions against our HID  USB compatible
UPS systems and would like to know what is needed and/or who is needed to
contact in order to updated the listing of compatible Tripp Lite UPS
systems in your HCL list?

Hi Eric,

From end users of NUT, we usually request the information mentioned under
"Report new devices, omissions or errors" at http://www.networkupstools.org/stable-hcl.html#footnotes

However, I don't want to be pedantic about getting the exact output of
'upsc' from the entire Tripp Lite product line - especially if several
models share the same USB controller. Getting the 'upsc' output from a
representative model should be sufficient.

What would be helpful is to understand which models are similar, and
whether there are any attributes we can use to differentiate between
various generations of the hardware (for instance, at some point the
SMART2200RMXL2U changed from the proprietary serial-over-HID to standard
PDC HID).

Also, we occasionally run across cosmetic errors in the output data: http://thread.gmane.org/gmane.comp.monitoring.nut.devel/6482

While this shouldn't affect the shutdown sequence, we do try to correct the
returned measurements if we can identify a good algorithm. If all of the
voltages are in microvolts (including the config voltages), we can apply a
multiplier across the board. But if only some of the exponents are wrong,
it is harder to write a general rule that won't break when the HID
descriptor in the firmware is fixed. If there is a firmware revision that
we can compare against, that can help isolate the bug fixes.

The last piece (not visible on the HCL, but included in the data files for
hotplug/udev) is the list of USB vendor/product IDs. If a new Tripp Lite
product ID were to be encountered by NUT, the driver would not
automatically attach to it unless the "productid" option is specified. It
is a simple way to tell users that we did not know whether that device
would work when that version of NUT was released, but that they can give it
a shot (potentially getting incorrectly scaled voltages). We are open to
suggestions on how to improve that heuristic, especially if Tripp Lite has
allocated separate ranges of product IDs for UPS and non-UPS hardware.
Here's the code in question:

https://github.com/networkupstools/nut/blob/master/drivers/tripplite-hid.c#L57

In that file, the product IDs are matched individually, and there is a
tripplite_claim() function at the bottom of the file which tries to offer
advice for other IDs.

Regards,

--
Charles Lepple
[email protected]




________________________________
 This message is for the addressee's use only. It may contain confidential
information. If you receive this message in error, please delete it and
notify the sender. Tripp Lite disclaims all warranties and liabilities, and
assumes no responsibility for viruses which may infect an email sent to you
from Tripp Lite and which damage your electronic systems or information. It
is your responsibility to maintain virus detection systems to prevent
damage to your electronic systems and information.
 
CD: 5ms