Re: Resistor value applied between CAN H & L
Posted by
Seth on
Mar 15, 2021; 12:58pm
URL: http://bluesaab-forum.90.s1.nabble.com/Resistor-value-applied-between-CAN-H-L-tp1749p1750.html
This is because the canbus lines are *supposed* to have 120ohms between them. But I think Saab did something unique and I wanted BlueSaab to match that as much as possible.
with the additional esd protection diode, it changed the resistance so I seem to remember measuring something close to 120ohms across them (but different).
I also seem to remember comparing a stock cd changer resistance on the can lines and the BlueSaab module now reads similar to that.
On Mon, Mar 15, 2021 at 08:36 homerisback [via BlueSaab Forum] <
[hidden email]> wrote:
Hi guys,
While struggling to order SN65HVD234DR due lack of stock @ Mouser, I tried to find any equivalent chip but no luck, I'll wait for it.
By the way, I looked at its datasheet and saw that they talk about a 60 ohm resistor between CAN H & L lines where we use a 68 kohm one.
What led to this value and why is there a multiplying factor of 1000 in BlueSaab's design ?
Every module I built with 68 kohm obviously works fine, I only wanted to know if there's a reason I'm missing...
Thanks
01' 9.3 SE Conv - AS3 - Nexus 5 Android M 6.0.1 - BlueSaab v4.2 + Amp - Latest CDC repo.
NC, USA