Connections; Electrical Connection; Connecting A Nystagmograph; Equipotential Bonding Conductor Connection - Atmos Variotherm plus Operating Instructions Manual

3.0 Setting up and starting up
Fig. 5.

3.3 Connections

3.3.1 Electrical connection

• According to the directions of VDE 0107 and VDE 0100,
medically used rooms have to be equipped with a leak-
age current protective circuit (FI protective circuit) with
a nominal leakage current of < 0.03 A. Installation must
correspond with VDE 0107.
• Connect the power cable to the socket on the unit (,
Fig. 2).
• Insert the power plug in a correctly installed socket with
earthing contact.

3.3.2 Connecting a nystagmograph

• When controlling an ENG (electro-nystagmograph) or a
CNG (computer-nystagmograph) at output (, Fig. 2),
please connect only recording equipment approved by
ATMOS. Connecting cable available from ATMOS (see
chapter 8.0).
• At the end of the stimulation time, a trigger signal for a
nystagmograph is available at the rear 3-pole DIN socket.
This outlet is an electrically isolated photo transistor.
The emitter connection that has to be connected to the
ground line of the trigger inlet on the nystagmograph is
attached to pin 3. The open-collector connection is locat-
ed on pin 1 and is to be connected to the positive supply
voltage (+5 V or +12 V) by means of a pull-up resistance.
The maximum collector voltage of the transistor may not
exceed 80 MA.
3.3.3 Equipotential bonding conductor connec-
tion
• Connection for potential equalization (, Fig. 2). Con-
necting cable available from ATMOS (see chapter 8.0).
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