3-35
RX7 Stimulator Base Station
RX7
Stimulator
Base
Station
RX7
Overview
The RX7 base station is a high performance processor available with either two or
five 100 MHz, 1600 MFLOPS Sharc DSPs. You can use the base station’s onboard
DSPs to design and generate complex arbitrary waveforms or complex patterns of
biphasic pulses in real-time. The RX7 has been developed specifically for
microstimulation applications. As part of TDT’s RX7G MicroStimulator system, the
RX7’s primary role is to control the MS16 stimulus isolator, transferring hardware
control and stimulation information across fiber optics. This proven digital
communication system optically isolates the RX7 from the electrical stimulator,
eliminating AC power surges and noise. For more information see “MS4/MS16
Stimulus Isolator” on page 7-3.
The RX7 includes 40 bits of digital I/O, analog output, and can include one or two
fiber optic input ports for acquisition of digitized data from Medusa preamplifiers.
Acquired signals can be filtered, rectified, or smoothed for stimulus output or dynamic
real-time stimulus control based on analog control signals from virtually any signal
source.
Power
and
Communication
The RX7 mounts in a System 3 zBus Powered Device Chassis (ZB1PS) and
communicates with the PC using the Optibit (PO5/FO5) PC interface. The ZB1PS
is UL compliant, see the
ZB1PS Operations Manual
for power and safety information.
Software
Control
Software control is implemented with circuit files developed using TDT's RP Visual
Design Studio (RPvdsEx). Circuits are loaded to the processor through TDT run-
time applications or custom applications. This manual includes device specific
information needed during circuit design. For circuit design techniques and a complete
reference of the RPvdsEx circuit components, see the
RPvdsEx Manual
.
