homing with Phase Z encoder on MESA 7i96s

if you: 

1. Disconnect the encoder

2. Change the index input to TTL mode
(W1 left)

3. With LinuxCNC running and halshows "Watch" tab showing
    hm2_7i96s.0.encoder.00.input-index, does the state of
    hm2_7i96s.0.encoder.00.input-index change when you ground
    the IDX+ input (TB2 pin 13)?

i will try that tomorow
thanks

So, my signal goes to true, but doesn't return to false once the wire is removed from GND. moreover, it doesn't happen every time. sometimes it works, sometimes it doesn't?

Is the index input jumpered for TTL MODE? (W1 left)

Unless this is done, the results will be unpredictable.
 

I'm doing the test again today

So, when I insert the wire into pin 13, the signal is on “Fasle” and when I remove it, the signal is on “True”. Without connecting Z to GND