DIGITAL SIGNAL PROCESSING USING CASPER TOOLS

Daria Lane & Bang NhanNAIC/NRAO Single Dish Summer School 7Arecibo Observatory11-16 July 2013

Analog. AKA Lots of cables…

DIGITAL=FUTURE

CASPER Hardware – ROACH + iADC

FPGA

ADC

ROACH (Reconfigurable Open Architecture Computing Hardware)

PowerPC

Z-DOK+

CX4

Ethernet

RS232

Mem

DIO

ADC

Analog to Digital Converter - ADC

A/D …

A/D …

= or

iADC (ADC2x1000-8)

katADC

clock

Analog to Digital Down-Conversion

Low Pass Filter

Downsampling