Monitoring Video4 voltage (is it lower than DL1 voltage ?)
Posted: Sat Jul 23, 2016 8:53 pm
Hi
I have a DL1 mk2, Video 4 (2 camera with data logging option) and DASH3.
The Video4 is exhibiting signs of low voltage - rear (SD) camera is breaking up.
I log voltage on DL1 by feeding the battery voltage in analogue channel 8 - on most recent race voltage was about 12.3v (I don't run an alternator).
In Video4 config I went into Configuration | Data Configuration and selected the option to take voltages and temps from internal sensors (all other sensors are flagged as exteral).
The only place I could find to view the Video4 voltage in Analysis is in the Variable manager under Serial Variables | Battery Voltage (misc 3). It reported 11.6v - much lower than the voltage the DL1 reported (and also lower than my multimeter measured the the input voltage to the Video4 !)
Question 1: Is Serial Voltage | Battery Voltage the correct variable to show the Video4 voltage ?
Question 2 : Assuming it is, why would the Video4 voltage be significantly lower than DL1 voltage when both are being fed from the same point ?
All help and suggestions appreciated.
Jimmy
I have a DL1 mk2, Video 4 (2 camera with data logging option) and DASH3.
The Video4 is exhibiting signs of low voltage - rear (SD) camera is breaking up.
I log voltage on DL1 by feeding the battery voltage in analogue channel 8 - on most recent race voltage was about 12.3v (I don't run an alternator).
In Video4 config I went into Configuration | Data Configuration and selected the option to take voltages and temps from internal sensors (all other sensors are flagged as exteral).
The only place I could find to view the Video4 voltage in Analysis is in the Variable manager under Serial Variables | Battery Voltage (misc 3). It reported 11.6v - much lower than the voltage the DL1 reported (and also lower than my multimeter measured the the input voltage to the Video4 !)
Question 1: Is Serial Voltage | Battery Voltage the correct variable to show the Video4 voltage ?
Question 2 : Assuming it is, why would the Video4 voltage be significantly lower than DL1 voltage when both are being fed from the same point ?
All help and suggestions appreciated.
Jimmy