Help for VDI (IDX PRO )

[mohandes]

hi
i connect VDI to IDX and it is ok , but always shows VDI=45 ,why ?
i can adjust by bottom Delay, threshold , and Speed but always show VDI=45.
so any one can help me more
thanks

[mohandes]

look these pics and understand my means
regards

[mohandes]

no gurus help

[Silver Dollar]

Can you post pictures of the wires going to the IDX maybe one is on the wrong spot?
A fixed value like 45 means it is not seeing the target's voltage...

[mohandes]

Can you post pictures of the wires going to the IDX maybe one is on the wrong spot?
A fixed value like 45 means it is not seeing the target's voltage...

i check , all connection is ok so ????

[golfnut]

The source code for this was never made public - It may be that the number corresponds to

Number or Phase Angle = Tan-1( VY/VX )


In which case you have the same DC offset feeding the X and Y VDi inputs. As Tan -1 (+(x)mV /+(x)mV ) = 45degrees
Try it with a meter and see.
If so problem with DC offsets in detector.



To make sure VDI good...

Remove the X and Y connections and ground both of them (the vdi X,Y wires )- see what you get on the VDI display.

Then put +100mv DC on both of them and see what you get on the VDI display.

[mohandes]

The source code for this was never made public - It may be that the number corresponds to

Number or Phase Angle = Tan-1( VY/VX )


In which case you have the same DC offset feeding the X and Y VDi inputs. As Tan -1 (+(x)mV /+(x)mV ) = 45degrees
Try it with a meter and see.
If so problem with DC offsets in detector.



To make sure VDI good...

Remove the X and Y connections and ground both of them (the vdi X,Y wires )- see what you get on the VDI display.

Then put +100mv DC on both of them and see what you get on the VDI display.

thanks
but how can i 100mv produce >??

[porkluvr]

Here is a new word:

Refund

Here is "refund" used in context:

Mohandes, if are a second semester student in engineering school and you still cannot figure out how to generate 0.1V without having to ask somebody else for help, perhaps you should ask for a refund of any money you paid for tuition.

[mohandes]

Here is a new word:

Refund

Here is "refund" used in context:

Mohandes, if are a second semester student in engineering school and you still cannot figure out how to generate 0.1V without having to ask somebody else for help, perhaps you should ask for a refund of any money you paid for tuition.

I BETTER SAY i should use EXTERNAL supply.

[Koala]

battery and a voltage divider should workhttp://www.raltron.com/cust/tools/voltage_divider.asp

[golfnut]

You all beat me too it, I was going to say a potato with a copper and an iron nail.

We were all young once and eager, but hey have a try mate.. ;')

S

[Silver Dollar]

I guess the question is, does the meter or audio on the IDX work without the VDI?
I was assuming it did....

[Koala]

I guess the question is, does the meter or audio on the IDX work without the VDI?
I was assuming it did....

Yes I did not bother with the VDI.
It's only good for target in the first few inches after that depends on the size and shape of the target for it to be accurate.
Just use it as is makes a good job of discriminating iron out and dig everything else

[mohandes]

I guess the question is, does the meter or audio on the IDX work without the VDI?
I was assuming it did....

yes it is good work
but yet discrimination not work and VDI too.so i should Mr golfnut wave