Hardware

Systems

RM1

Mini and Mobile Real-Time Processors

The System 3 platform includes two self-contained real-time processors: the Mini Processor and the Mobile Processor. Designed as an affordable test-bed system for designing and debugging RPvds circuits, each device includes stereo A/D and D/A (45 kHz bandwidth), an adjustable onboard speaker, and can drive headphones at up to 100 dB SPL. The devices draw power from the USB interface of the computer and work well with laptop computers for maximum portability. While these devices can be used for basic mobile psychoacoustics testing, we recommend the RP2.1 or RX6 for most psychophysical studies. For neurophysiology or evoked potentials we recommend the RA16BA or RX5 with one of our preamplifiers.

Part number:
RM1 Mini Processor
RM2 Mobile Processor (with fiber optic input)

Technical specifications:

DSP:	50 MHz Sharc 21065, 150 MFLOPS
Memory:	32 MB SDRAM
Max sampling rate:	~100 kHz
D/A:	2 channels, 24-bit Sigma-Delta
S/N (typical):	85 dB (20 Hz to 20 kHz at 900mV)
THD (typical):	-80 dB for 1 kHz input at 630 mV rms
Sample Delay:	17 samples
A/D:	2 channels, 24-bit Sigma-Delta
S/N (typical):	85 dB (20 Hz to 20 kHz at 900mV)
THD (typical):	-80 dB for 1 kHz input at 630 mV rms
Sample Delay:	16 samples
Voltage range:	+/- 1.0 V
Highpass filter:	0.16 Hz
Fiber optic port:	one 16-channel input (RM2 only)
Digital inputs/outputs:	8 user selectable
Power and communication:	built-in interface to any PC’s USB port AC adapter optional