Comments on: ErosTek ET312B Power Unit

By: erostek

erostek — Fri, 07 Oct 2011 23:14:16 +0000

The latest ET312B’s run firmware version 1.6.

By: erostek

erostek — Fri, 07 Oct 2011 23:13:21 +0000

Hello Doug:

I’m glad you’re enjoying your ET312B and 232. The battery inside the ET312 is designed to last a few years, sometimes 5 or more years if charged after each use.

If your 312 has ever been discharged past the “Low Battery” alert (ex. power switch left on for a few days or more while disconnected from AC adapter), the battery will most likely need to be replaced. There are two kinds of AC adapters out there for the ET312B. The earlier units shipped with a linear / unregulated adapter that had pins for the US/Canada, UK, or EU hard-wired into the adapter itself. These adapters were rated 12 VDC at 500mA. The newer adapters are universal and can adapt to a wide range of input voltages (100 – 240 VAC) and come with 3 kinds of plugs that are fitted into the mains input: US/Canada, UK and EU. These regulated adapters have a rating of 15 VDC @ 500mA and have the new ErosTek logo on the back. Both have a center positive (+) polarity coax connector that fits into the ET312.

If you need a new battery, we have them available. If you need more help, contact sales@erostek.com. Thanks. –Eric

By: Douglas Carl

Douglas Carl — Sat, 01 Oct 2011 21:12:12 +0000

Hi All

I am a long time satisfied user of the ET 312B.

(In fact, I also have one of the earlier ET 232 units.)

I have had the 312 for a few years now, and lately I am noticing the batteries are only charging to around 50%.

What is the output range for the charger? I am not sure if the charger or the batteries are getting weak.

Thanks in advance for your help.

Doug C.
Sterling Heights, MI

By: De

De — Sat, 27 Aug 2011 17:42:40 +0000

What’s the latest firmware version on the ET312??

By: erostek

erostek — Thu, 11 Aug 2011 17:50:14 +0000

We generally connect the wires leading to the sleeve (side) contacts of each output plug together to make the common wire of a TriPhase adapter. It doesn’t really matter which ones you choose as long as you pick the same wire from each channel (tip or sleeve) which will preserve the phase relationship. ErosTek units produce balanced biphasic outputs, so both sides are equally active. I hope this helps. –Eric

By: Tom Langham

Tom Langham — Tue, 09 Aug 2011 03:22:38 +0000

I would like to make a set of tri-phase leads for my ET-312B with two mono leads, each with 3.5mm plugs. Will “common” be the two wires that are connected to the center contact or the wires connected to the side contacts of the plug?

By: erostek

erostek — Fri, 22 Apr 2011 20:47:55 +0000

Hello Glenn. Thanks for asking about our repair policy. I just sent an email update to our dealers and have just posted a Repair Policy Update to the blog. As you'll read, the vast majority of ErosTek units continue to operate flawlessly for many years when taken care of. I hope this answers your question and feel free to link to this post for anyone asking the same questions on SmartStim.com. =Eric

By: erostek

erostek — Fri, 22 Apr 2011 19:24:10 +0000

Hello John. You might want to follow the steps in a post I recently added to the blog ET312B: Powerful Menu Options. I hope this helps! =Eric

By: Glenn Wearsch

Glenn Wearsch — Fri, 22 Apr 2011 14:57:32 +0000

Hi Chris,
Could you tell me if you are still repairing ET312b’s that are out of warranty?
If you do not, could you tell me where one would get this unit repaired? (Mine is still in warranty but the question has been brought up on Smart Stim web site and I would like to post the proper answer.)
Thanks for your help in this matter.

G.Wearsch

By: John Rice

John Rice — Fri, 22 Apr 2011 05:23:06 +0000

we have The Erostek 312 my unit das put out power till 60 we tack or time moving up slow 3 or 4 hr,but befor we are toped out at 100 how can I git more power,up grad or somethig I wish I had known about it a long time a go pleas let me know sow thing