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Graham-Field Grafco Analog T.E.N.S. / TENS Unit #GF-3
Graham-Field Grafco Analog TENS Unit is a battery-operated device that includes two controllable output channels. This device creates electrical impulses in which intensity, duration, and modulation can be altered. The device controls are easy to use and the slide cover protects accidental changes in settings.
| Particulars | Specifications |
| Channels | Dual |
| Pulse Amplitude | Adjustable, 80 mA peak maximum for positive pulse or -20 mA peak maximum for negative pulse into 500 ohm load each channel |
| Pulse rate | (Adjustable) 2Hz to 120Hz |
| Pulse width | (Adjustable) 40µ S to 260µ S |
| Modulation mode | Pulse width is automatically varied in a cyclic pattern over an interval of nominally 5.0 seconds maximum. Pulse width decreases linearly over a period of 1.5 seconds from the control setting value to a value which is decreased 45% maximum. The narrower pulse width will continue for 2 seconds maximum, then increase linearly over a 1.5 second period to its original value. The cycle is then repeated. |
| Wave form | Asymmetrical Bi-Phasic |
| Maximum charge per pulse | 21 micro coulombs maximum. Positive pulse and negative pulse separate. |
| Battery | 9 volt battery (alkaline, or nickel-cadmium rechargeable). |
| Size | 23mm x 64mm x 91mm |
| Weight | 130grams (battery included) |
