6-3
PZ5 NeuroDigitizer
PZ5NeuroDigitizer
PZ5Overview
The PZ5 is a multi-modal neurodigitizer suitable for
recording a broad range of biological potentials. Its
analog input boards combine the functionality of the
PZ2 and PZ3 amplifiers in a single device that can be
used for both high and low impedance input signals
simultaneously. The PZ5 may also include digital input
boards for inputting signals from an Intan RHD2000
amplifier board with up to 128 channels.
Analog input boards oversample the signal with very fast
instrumentation grade converters. TDT’s custom hybrid
A/D circuit yields 28 bits of resolution and unparalleled
dynamic range. Optional DC coupling offers zero phase
distortion across the signal bandwidth. Sampling rate
and down-sampling filters can be optimized on each
logical amplifier for the intended input type to optimize
signal fidelity. The +/-500 mV input range is large
enough to accept any biological potential and most
stimulus artifacts without saturating.
The neurodigitizer analog inputs are organized into 16-channel banks. Each bank is
electrically isolated, meaning the ground and reference channels are not inherently
shared between banks. Multiple banks can be grouped into a single logical amplifier
that shares the same settings and ground/reference among each bank in the logical
amplifier. There are several different referencing modes; each logical amplifier can
use the ground as a reference, use a shared reference, use a unique reference on
each bank or implement full per-channel differential referencing.
Digital inputs are used exclusively with RHD2000 series amplifier boards and SPI
Interface Cables, available from Intan Technologies. Each input serves as a bank of
channels and may be up to 128 channels, depending on the connected amplifier
board. Each digital board can be its own logical amplifier, isolated from the other
boards, or be grouped with other digital boards in a larger logical amplifier
configuration.
A touchscreen interface provides immediate preview of inputs, impedance checking
and real-time control and configuration options for each amplifier bank.
PZ5 neurodigitizers are available in 32, 64, 96, or 128 analog channel models.The
PZ5 is also available with 2 or 4 digital inputs and models that combine 32 or 64
analog input channels with 2 or 4 digital inputs. The PZ5 can support a total of up
to 128 analog channels or up to 256 digital channels or up to 256 mixed channel
types. the total number of channels is generally reduced to 128 at higher sampling
rates, up to 50kHz. See “Sampling Rate and Digital Input Channels” on page 6-7,
for more information.
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