Hi,
I made 16F84 type interface both Eric's schematics and also from FMS Doc. I'm using PIC chips for a long time. I used my scope for measuring signal input and output on both device. The problem is on FMS device when I turned off my transmitter on the Eric's test program little dots are moving up-left corner. When I turned on I can see some numbers on the screen and dots are moving bottom-right corner. After all nothing happens. When I click calibrate I cannot see anything. But when I touch transmitter antenna sometimes I'm getting flicky numbers and dot's are moving in the box. I tried this 2 different computer one of them is notebook and the other is desktop. Voltages are ok on Vcc and PIC legs. Also I can read nearly +/- 9 v on DSUB. So if someone can give me some advise I appriciate.