Braun HNS 11 user manual Special technical features, Technical data

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Special technical features

The configuration of the electrode connection provides protection against a wrong polarity connection of the electrode cable.

This new type of plug connection system ensures correct polarity of the electrodes at all times.

A high stimulation voltage is associated with an unusually wide range of adjustment with extremely small stimulation electrodes.

The Stimuplex® HNS 11 generates a negative, current-stabilized square pulse. In contrast to conventional instruments of this type, the pulse is shaped at both slopes by extremely fast active pulse drivers. An output amplifier specially designed for this application has an extraordinarily wide dynamic range and produces repro- ducible settings even below 0.1 mA.

Use of the latest microcomputer technology has made it possible to integrate performance characteristics which until now could only be provided in large systems. For example: selection of cur- rent display mode, set and actual value display, display of battery charge, error messages.

An internal quartz time base ensures precise pulse widths and frequencies.

Technical data

Type: Stimuplex® HNS 11 nerve stimulator

Instrument type	BF
Battery	9 V
Power consumption	3.3 mA
Stimulation current	max. 5 mApp / 0 ￿ - 12 k￿
Stimulation voltage	max. 65 Vpp
Stimulation frequency ....	1 Hz / 2 Hz
Measuring tolerance	Adjustment control display =3% (set point)
	Flowing current display = 2% (actual value)
	based on set mA max values (5 mA or 1 mA)
Weight	250 g

Due to its high maximum output voltage the nerve stimulator cov- ers a wide range of skin and needle impedance. This is especially important when using stimulation needles with an extremely small conductive area (pin point electrode tip) such as Stimuplex® D and Contiplex® D needles.