Alert Codes

Understand the alert codes on the Vagal tVNS Stimulator.

A861

Bad setup

Impossibly High Resistance

ErrorStimulation Cannot Start

Clip Not Connected
Impedance Impossibly High
Check setup

On startup the device tries to pass a very small current to check if an ear is present. If it is not possible then A861 is displayed and the device automatically turns off

A862

Easy fix

Very High Resistance

LimitedMild Stimulation Only

Inspect Setup for source of resistance
Clean Surfaces
Apply More Conductive Paste

A862 occurs when there is high resistance between the electrodes.

A863

Don't worry

Medium Resistance

AlmostCannot Reach Maximum

Good Stimulation
Not Quite Maximum
Check Setup

A863 indicates there is some resistance preventing maximum stimulation.

A864

Cable Fault Detected

FaultShort Circuit Detected

Contact support
Please send photo of setup

The device has detected a problem on the connected jack. Only connect official Vagal cables and clip electrodes.

A865

Recharge

Empty Battery

EmptyPlease Recharge Battery

Battery empty
Connect Charging Cable
To a 5v USB Power Source
And Recharge Device
Until Battery Charged

Please recharge the device using a vagal.com USB charging cable. Replacement cables can be ordered here - tvns charge cable