TDT RZ2, Manual, Page: 267 / 736

6-59
PZ2 PreAmp
PZ2 PreAmp
PZ2 Overview
The PZ2 is a high channel count preamplifier
suitable for extracellular recordings. The PZ2
preamplifier features a custom 18-bit hybrid A/
D architecture that offers the advantages of
Sigma-Delta converters at significantly lower
power and a fast fiber optic connection capable
of simultaneously transferring up to 256
channels. The extended bandwidth offered by
this connection supports sampling rates up to
~50 kHz and improves signal fidelity, spike
discrimination, sorting, and analysis. Used
exclusively with Z-Series base stations, PZ2
preamplifiers are available in 32, 64, 96, 128,
or 256-channel models.
Note: When sampling at a rate of ~50 kHz only the first 128 amplifier channels will be
available.
System Hardware
All PZ2 channels are organized into groups of 16 channel banks with each bank
corresponding to a rear panel headstage connector and front panel LED display.
Recorded signals are digitized, amplified, and transmitted to the RZ2 base station via
a single fiber optic connection for further processing. In addition, configuration
information is sent from the RZ2 to the PZ2 preamplifier across the fiber optic
connection.
A standard configuration for neurophysiology recordings includes electrodes (chronic or
acute), one or more Z-Series high impedance headstages, a PZ2 preamplifier, and
an RZ2 base station.
Hardware Set ‐ up
The diagram below illustrates the connections necessary for PZ2 preamplifier
operation.