JohnG300c
Advanced Member level 4
Hello everyone.
I'm designing a MAXII-based device that will record timestamped data from a number of serial links. The idea is to upload this data via a FX2LP and display it in a PC application. I would like to be able to have a large, via software programmable input trigger range in the signal so it directly can be used for TTL and RS232 for example. The signal rate should be in the 4 Mbps rate to be able to capture very fast serial communication.
The question is: Are there any standard parts that would do this or will i have to create my own front-end using OP-amps? Will the OP-amps be fast enough for this application?
I do have a LogicPort (PcTestInstruments.com) Logic analyzer and it allows the input trigger level to be adjusted between -6V to 6V in 50mV increments. I took it apart but could not really figure out how it works. The Logicport uses an Altera Cyclone FPGA which has standard LVTTL input levels.
Thanks,
/John.
I'm designing a MAXII-based device that will record timestamped data from a number of serial links. The idea is to upload this data via a FX2LP and display it in a PC application. I would like to be able to have a large, via software programmable input trigger range in the signal so it directly can be used for TTL and RS232 for example. The signal rate should be in the 4 Mbps rate to be able to capture very fast serial communication.
The question is: Are there any standard parts that would do this or will i have to create my own front-end using OP-amps? Will the OP-amps be fast enough for this application?
I do have a LogicPort (PcTestInstruments.com) Logic analyzer and it allows the input trigger level to be adjusted between -6V to 6V in 50mV increments. I took it apart but could not really figure out how it works. The Logicport uses an Altera Cyclone FPGA which has standard LVTTL input levels.
Thanks,
/John.