13 Apr
2005
13 Apr
'05
5:32 p.m.
On 4/13/05, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
These programs tend to need a PC with 2 serial ports.
You want to monitor
the data flowing over the 2 data lines in then link between the 2 devices
you're investigating, so you need 2 serial inputs on the monitoring
device (== PC).
That's what makes the dedicated devices like the HP 4xxx so handy...
they can monitor or emit bytes with the same cable, depending on what
you are asking it to do.
The downside is, naturally, that lots of people have serial ports on
PCs and not many people have dedicated line analyzers.
For the majority of uses, I would expect people need to monitor, not
generate traffic.
-ethan