V
[email protected]
- Jan 1, 1970
- 0
Will using a single pair in cat.5 cable as an open collector bus for "slow"
multidrop serial communication work ..?
I have read that cat.5 cables have nasty complex impedances below 100-200 kHz.
The voltage level I will use is likely to be 3.3V. Output I/O from an PIC
or AVR GPIO pin in threestate mode. Active or FPT termination to be used in
the cable ends. So in essence it should work like a single line scsi bus.
Also what's the correlation between cable bend radius and maximum frequency
(or bitrate) used ..?
The bend radius hint so far is 4 times the cable diameter. But no
clarification in respect to frequency.
Any hints on joining three cat.5 cables into an T-junktion..? Such that
two maincable pairs pass through, and the remaining two goes into a
patch cable.
multidrop serial communication work ..?
I have read that cat.5 cables have nasty complex impedances below 100-200 kHz.
The voltage level I will use is likely to be 3.3V. Output I/O from an PIC
or AVR GPIO pin in threestate mode. Active or FPT termination to be used in
the cable ends. So in essence it should work like a single line scsi bus.
Also what's the correlation between cable bend radius and maximum frequency
(or bitrate) used ..?
The bend radius hint so far is 4 times the cable diameter. But no
clarification in respect to frequency.
Any hints on joining three cat.5 cables into an T-junktion..? Such that
two maincable pairs pass through, and the remaining two goes into a
patch cable.