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RV8 Barracuda
Note:
This device is no longer available for new purchase.
RV8 Overview
The Barracuda features include nanosecond accurate event-timing, fast DAC's for
high frequency stimulus presentation and user control of sample frequencies. In
addition the Barracuda gives users precise control over stimulus presentation. The
system has 16-digital inputs, 8-digital outputs, and 8 analog outputs.
Power and Communication
The RA16 mounts in a System 3 zBus Powered Device Chassis (ZB1PS) and
communicates with the PC using any of the zBus PC interfaces. The ZB1PS is UL
compliant, see the
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
Nanosecond Event‐Timing
The Barracuda is a nanosecond accurate event timer. The TimeStamp component
uses the high-speed clock on the system to record when a TTL event occurred
during a sampling period. This means that event times are independent of sample
rate. When an event occurs the TimeStamp sends out the time in microseconds from
the start of that sample period. At the end of each sample period the event timer is
reset to zero. In the figure below three events occurred during a sample period of
ZB1PS Operations Manual
for power and safety information.
RPvdsEx Manual
4-13
.
RV8 Barracuda
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Related Manuals for Barracuda RV8
Summary of Contents for Barracuda RV8
- Page 1 The Barracuda features include nanosecond accurate event-timing, fast DAC's for high frequency stimulus presentation and user control of sample frequencies. In addition the Barracuda gives users precise control over stimulus presentation. The system has 16-digital inputs, 8-digital outputs, and 8 analog outputs.
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Page 2: Additional Features
TimeStamp Diagram Fast Digital‐Analog Converters The Barracuda ships with PCM DAC's with up to 500 kHz sample rate. The fast DAC's can be used for high frequency presentations. In addition the Barracuda's PCM DAC's give users precise control over voltage outputs for microelectrode stimulation. - Page 3 4-15 Status Lights The status lights indicate the state of the RV8. Armed, Running, (DoCount), and FreeRun. Combinations of the status light describe the state of the RV8. Free Run Mode w/ Trigger Mode with Trigger Mode with Free Run Mode...
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Page 4: Device Configuration Parameters
The device configuration parameters allow RPvdsEx access to unique features on the RV8. To access a particular parameter either double-click on the parameter name or click on the parameter and click the Modify button. To reset the parameter value to the default mode click Clear. -
Page 5: Trigger Mode
Digital Out 7. Pulse length is 40 nanoseconds. ClkOut Sends pulses at 1/2 the clock frequency (25 MHz). UseZTRGA Starts the Barracuda when a ZtrgA goes high. Only works in the trigger mode (must also have bit- number 1 enabled). UseZTRGB Starts the Barracuda when a ZtrgB goes high. -
Page 6: Software Control
0 and a low voltage will produce a 1. Software Control The Barracuda has two modes: free-run and trigger. In free-run mode the circuit is always running and signals are constantly generated, acquired, and filtered. In the trigger mode the circuit runs for a set length each time it is triggered. -
Page 7: Time Stamp
Arbitrary Sample Rates The Barracuda is the only System 3 module that has arbitrary sample rates. To set the arbitrary sample, click Device Setup on the Implement menu, and then set the sample rate in the Arbitrary Sample Rate box. To check the true sample rate, click Check Realizable. - Page 8 System 3 sample period in seconds that you require and then divide by 1/(sample period). These circuits work only with the Barracuda. If the circuit is run on a different RP module it will give the following error: RP Control Object files (RCO) will produce similar problems. If you attempt to run...
- Page 9 System 3 4-21 ActiveX The Barracuda uses two additional ActiveX methods SetDevCfg and GetDevCfg. Detailed information about them is included in the ActiveX help. Barracuda Technical Specifications 50 MHz Sharc 21065, 150 MFLOPS 32MB SDRAM Memory 16 bits + 1 TRIG input...
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Page 10: Db25 Connector Pin Out
4-22 System 3 DB25 Connector Pin Out Name Description Name Description Digital Output Channels Digital Output Channels Ground Digital Input Channels Digital Input Channels Di10 Di11 Di12 Di13 Di14 Di15 Option I/O DB9 Connector Pin Out Name Description AGND Analog Ground Analog Channels RV8 Barracuda...
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