Multichannel Systems Wireless-System Manual - Manual (Page 9)

5
3 Hardware
3.1 Headstage
The headstage is the first of the three elements of the Wireless-System. The headstage is
extremely small and lightweight and allows the recording of neuronal activity in freely moving
animals. The A/D conversion with a variable sampling rate of 1, 2, 4, 5, 10 and 20 kHz when using
all channels and 25, 32 and 40 kHz when using four or less than four channels of the W8-System
or one or two channels of the W4-System. For the W16-System the maximal sampling rate is 10
kHz when using all 16 channels or up to 20 kHz when recording on 4 or 8 channels. Respectively,
the sampling rate of the W32-System is 5 kHz when using all 32 channels and up to 10 kHz when
using 16, 8 or 4 channels only.
Please see the table for the dimensions and weights of the headstages. Thus, the headstage
is lightweight and reasonable for the free moving laboratory animal.
Dimensions /
Weight W in mm D in mm H in mm Weight
W4-System 13 (+ antenna) 13 5 2 (+ battery)
W8-System 16 (+ antenna) 16 5 3 (+ battery)
W16-System 16 (+ antenna) 16 6.5 4 (+ battery)
W32-System 16 (+ antenna) 16 7.5 5 (+ battery)
The headstage is designed energy efficient. The standard battery (100 mAh) of a headstage
permits continuous recording of all channels for more than 2 hours. Recharging is then realized
via USB. When doing experiments with animals insensitive to weight, MCS also offers larger
batteries, which provide longer recordings. For the W4-System a smaller 30 mAh battery (1.5 g)
is available. Please contact Multi Channel System MCS GmbH for more information on battery
options.
The battery can be fixed on the top side of the headstage or can be stored in a special backpack
adapted to the size of the animal.