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VM1000 with e-mags

M

micahroe

I'm New Here
Hello everyone,

First timer here. Got an RV-6 in for a few upgrades, AV-30's and E-mags. Owner has a VM1000 installed. Does anyone have any recommendations on how to get the digital tach signal from the emags to display on the tachometer that is on the VM1000? The tach on the VM1000 is just displaying 209.8 which makes no sense to me because it's not even receiving a signal from the emags.

Thanks for any tips or help.
 
micahroe said:
Hello everyone,

First timer here. Got an RV-6 in for a few upgrades, AV-30's and E-mags. Owner has a VM1000 installed. Does anyone have any recommendations on how to get the digital tach signal from the emags to display on the tachometer that is on the VM1000? The tach on the VM1000 is just displaying 209.8 which makes no sense to me because it's not even receiving a signal from the emags.

Thanks for any tips or help.
Click to expand...
The 209.8 is likely the tach time, which is displayed there until the engine starts.
 
VM1000 Installation Manual attached for posterity. Page 10.
 

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  • 68702-VM1000-Manual-best.pdf
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I have installed a diode in line with the tach output cable going to the VM1000 cables per the VM1000 manual for electronic ignitions. That did not work. I also installed the tach shift diode that came with the emags. Per the emag manual, the diode goes between the tach shift output (#6) and the ground (#1) and changes the output from 2 to 1 on the revolutions. Still only get 209.8 displayed on the VM1000 under the tach indicator.

Does anyone else have any other thoughts to try?

Thanks for the input.
 
micahroe said:
I have installed a diode in line with the tach output cable going to the VM1000 cables per the VM1000 manual for electronic ignitions. That did not work. I also installed the tach shift diode that came with the emags. Per the emag manual, the diode goes between the tach shift output (#6) and the ground (#1) and changes the output from 2 to 1 on the revolutions. Still only get 209.8 displayed on the VM1000 under the tach indicator.

Does anyone else have any other thoughts to try?

Thanks for the input.
Click to expand...
I fitted a Flight Data T-30 as I couldn't get P-mags to work with a VM-1000
T-30 Tachometer
 
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