10
3.5
Patient connections
Patient Ground
The patient ground should always be connected in order to keep the amplifier in range. The location
of the patient ground is ideally away from your measurement electrodes.
Patient Lead Connectors: Bipolar, Auxiliary
The number and type of inputs on your device depend on the configuration you have. NeXus-4
devices exist in many different configurations, varying from 2 up to 3 input channels. In general
there are two types of patient connection inputs on the device: bipolar or auxiliary.
Type of input
Connector
Description
Patient
Ground
Patient ground is used to keep the amplifier in range. The input is
marked with ‘GND’.
Dual Bipolar
input
Used for differential measurements. Leads that fit in the bipolar
inputs have two bipolar cables with 2 snaps per cable going to the
patient. The bipolar input uses a 6 pin connector.
Auxiliary
Used for sensors that require (5V) power or additional sensor
modules. The auxiliary input is a 5 pin connector. See list of
compatible sensors on the website
www.mindmedia.com
.
Important
•
Note the difference in number of pins of the different inputs.
•
The orientation of the connector is marked with a red dot on both
device connector and accessories. Make sure the dots are aligned
before plugging the cable in the device.
•
Do
not
rotate the connector during insertion of the cable.
3.6
Device label
The device label can be found at the bottom of the device. It contains the REF code, Serial Number,
power requirements and other properties of the device. Use the REF number and-or serial number
(SN) to look up the channel specifications as listed in
chapter 8
