What are the ground offset issues?
What are the ground offset issues?
For example, I have see the analog ground of a wideband be as far as 0.5V above battery ground.
So you would just check your battery ground vs. wb ground? How much difference if any is acceptable?
I'm measuring about 0.15V. If I bring a ground wire from the battery and tie into the wideband will that help? I am going to search for the null modem procedure just in case it won't.
Joecar, when wiring the serial cable for the wideband is it possible to just wire a direct cable? What it the purpose for the adapter?
The null modem adapter simply crosses the Rx and Tx wires...
so you can go directly (i.e. swap Rx/Tx by wiring it swapped).
RJ12 Jack
------ ------
1 <---> 1 (tip)
2 <---> 2 (middle)
5 <---> 3 (base)
Is this the best way to wire direct?