General information
9
The input modes are tabulated below. For the pinout of the
transducer and isolation amplifier sockets, see pages 27 and 28.
For more on the fundamentals of differential input, see page 34.
Note that, when selecting isolated input, ‘EEG’ is taken to
include ECG, EMG, etc.
Transducer
Grounded Both amplifier inputs grounded
Single ended Input +ve to amplifier non-inverting
input; inverting input grounded
Normal diff. Input +ve to non-inverting input;
Input –ve to inverting input
Inverted diff. Input +ve to inverting input;
Input –ve to non-inverting input
Isolation
amplifier
Grounded EEG Both amplifier inputs grounded
Isolated EEG /
EEG unclamped
Input +ve to non-inverting input;
Input –ve to inverting input
Clamped EEG —
0.5 ms, 1.0 ms, … 12 ms,
14 ms
Differential input as with normal EEG,
but input is clamped (see page 41) for
interval selected
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