Tryb drzewa | Tryb normalny

SP9VEY · 24-07-2017 2:03

Po kalibracji moja antena KF wygląda tak

.bmp

42_07_01.BMP (Rozmiar: 382.55 KB / Pobrań: 1436)

Co jest mierzone na tej fotce?

.bmp

42_07_03.BMP (Rozmiar: 382.55 KB / Pobrań: 1272)

SP7CLB · 24-07-2017 5:59

Chyba 10lg/s11/=10lg(/Zant/-50) - 10lg(/Zant/+50);
a zależność SWR od modułu /s11/ to: SWR=(1+/s11/) : (1-/s11/)

SP9VEY · 24-07-2017 21:50

Jeszcze raz dziękuje za pomoc w uruchomieniu analizatora. Teraz zostanie zapakowanie go do jakiejś obudowy.

EI8DRB · 04-08-2017 14:37

Hi all...
A am building teh v3 AA from Yury, but I am having a strange problem. If I try to do Hardware Calib. I get a meddage saying "No Signal". Also I get this message on the Measurement and Generator screen.
If I look at the input to the SA612 at OSCI, I see a square wave about 140mV P-P, but if I look at the output at OUTA or OUTB, I see noise.

Would anyone have any ideas?
Thanks
Gerry

Images here: https://goo.gl/photos/F4p8dSSjkF3YJiXv8
They are CLK1 output, OSCI input, OUTA output and screens from the AA

Output at CLK1

Input to SA612

Output from SA612

DSP Screen on AA

Gnerator Screen

SQ8MVY · 04-08-2017 19:35

Hi EI8DRB,

Please show in high resolution PCB image.
Show also clk0 output, IN_A ( pin 1) in DA1 and IN_B ( pin2 ) in DA2.
HW_CAL jumper is closed and WORK jumper is open for Hardware Calib.?

CANISLUPUS · 10-08-2017 9:20

Działa Wam dobrze TDR? U mnie pomimo zaterminowania kabla właściwą rezystancją nadal pokazuje jakieś odbicia.

EI8DRB · 10-08-2017 9:49

(04-08-2017 19:35)SQ8MVY napisał(a): Hi EI8DRB,

Please show in high resolution PCB image.
Show also clk0 output, IN_A ( pin 1) in DA1 and IN_B ( pin2 ) in DA2.
HW_CAL jumper is closed and WORK jumper is open for Hardware Calib.?

Hi Paul...
Thanks for offering your help.

Image links don't seem to work, so you can see all the images here:

https://goo.gl/photos/F4p8dSSjkF3YJiXv8

The images you requested are the last 6, in this order: PCB, CLK0 out, DA1 in, CLK1 out, DA2 in., CLK1 taken at 510R.

I have the HW_CAL jumper closed and WORK jumper open.

Thanks
Gerry

The images you requested:

PCB