Many thanks, Robin. For running on battery power, are there any functional benefits to pursuing the firmware upgrade (other than the ability to use a lower voltage of 3.7V, and of possible running "an officially supported configuration")?
Thanks again. Andy On Tue, Aug 21, 2018 at 11:28 AM Robin Coxe <robin.c...@ettus.com> wrote: > > Hi Andy. The E310 external power connector is capable of handling 5-15 VDC @ > max current of 3.5 A. So if you use an external battery pack with the > correct mating connector instead of the wall wart, it should work without > modification, although it is not an officially supported configuration. You > should consult the schematic at > http://files.ettus.com/schematics/e310/e310.pdf to ensure that the pinout is > correct. > > -Robin > > On Tue, Aug 21, 2018 at 10:56 AM, andy klein via USRP-users > <usrp-users@lists.ettus.com> wrote: >> >> Hi folks, >> >> I wondered if someone can clear up some questions I have about running >> the E310 on battery power. I'm aware that I can purchase an E312, but >> I'd like to use my existing E310's if possible. >> >> ** BACKGROUND ** >> >> I'm aware that there's a "newer" (circa 2015, so 3 years old now) >> firmware available for the E310 that apparently enables support for >> powering the device with a 3.7V battery. However, installing the >> firmware requires opening the device, connecting a JTAG programmer to >> the ISP header, and folks in this thread here have reported trouble >> finding a compatible connector -- >> >> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2015-October/016085.html >> If I can avoid opening the device, hacking a connector on there, etc, >> I'd like to. >> >> Meanwhile, some users in these forums report success by just >> connecting a 7.2V battery to the device with no mention of a firmware >> upgrade, such as this thread -- >> >> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2017-May/024803.html >> Yet, Neel at Ettus claims that the E310 (presumably running the >> original firmware) needs an external DC power supply, in this thread >> here -- >> >> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2015-May/014048.html >> >> ** QUESTIONS ** >> >> 1. Does one really need to upgrade the E310 firmware to be able to >> power the E310 with a battery? Or is this only necessary if one seeks >> to use a 3.7V battery? >> >> 2. Can one just connect a (for example) 7.2V battery to the device >> without bothering with the firmware upgrade? Maybe with a voltage >> regulator if necessary and a plug that's compatible with the E310 >> power jack on the end (such as the KLDX-PA-0202-A-LT that is suggested >> in yet another thread on these forums). >> >> Thanks. >> Andy >> >> -- >> https://aspect.engd.wwu.edu >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > > _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
