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System 3
PZ3 Low Impedance Amplifier
Recording Modes
The PZ3 supports two recording modes: Individual Differential and Shared Differential.
For
Individual Differential
(true differential) operation, the amplifier inputs are
grouped into banks of eight recording (+) channels, each with a paired alternate
indifferent (-) channel (inverting channel).
Individual
(True)
Differential,
Bank
1
and
2
Functional
Diagram
For
Shared Differential
operation, each bank of channels uses a separate shared
reference.
Shared
Differential,
Bank
1
and
2
Functional
Diagram
The PZ3’s impedance checking and a high voltage range features can be used in
both true and shared differential modes.
It is also important to note that in the various modes of operation, the RZ2
processor may use the alternate channels to report information such as impedance
values or RMS. This occurs at the software level on the RZ2. For example, in
Shared Differential mode the RZ2 maps RMS levels for each channel to the alternate
channels.
Electrode Connectors
The PZ3 is designed to record from low impedance electrodes and electrode caps
with input impedance less than 20 kOhm. Signals are input via multiple DB26
