EVAL-ADV7842-7511 Noise Interference lines

Hi,

I'm using version EVAL-ADV7842-7511P with KBCZ-5P chip version. I currently don't have a USB to serial adapter but will have one tomorrow.

Currently I am only connecting via USB. Is there a way to connect via Terminal with just the USB to issue commands? At the moment I am using only the AVES Blue software to run scripts.

I have confirmed it is definitely the eval board causing these lines/noise as i get the same results when inputting from the composite out of a DVD player as well as the laserdsic player.

Here is a photo of the issue. I am sorry it is quite difficult to make out because i had to capture the image from my iphone but the lines are very faint and go diagonally from bottom right to top left of the image and are moving/scrolling.

When I receive the USB - Serial cable tomorrow I will try running 'stoprep' In terminal as you suggest to see if that changes anything.

Thanks for all your help with this.

Ken

You can connect to the ports via a terminal emulator.  We use TeraTerm set for 115kbaud, 8bit no parity.  All commands are just plain ascii text strings.  Enter 'help' to get the list.

The -5P board does not start the repeater software at power up.  It was meant to be script driven.  You can enter 'startrep' to get it going.

I'm not sure what's really going on here.  We don't see those type of lines.  The UK is a 50Hz country, I am wondering if there is some kind of beat frequency going on since you see the same problem with a DVD player.  Can you do a quick check with all the lights off in the room.  LED and fluorescent lamps can sometimes flicker at the power frequency.  The eye doesn't see it but a beat frequency between the TV and lamps might introduce weird line.  This is just a quick and easy check to rule that out.

Also you say the the lines aren't there when the 3D comb filter is turned off.

Hi,

So having purchased the USB-Serial cable and issuing commands via TeraTerm, the lines interference has completely disappeared! Thank you so much for walking me through this! The decoding quality on this board is the best I've seen. Extremely impressed.

Is there a way to save a state for the Eval board so that it starts up with CVBS input selected as default without the need to connect it to a PC?

Many thanks again

Ken 

Thanks for the compliments.

There is no way to save the settings.  This board was meant to be configured by scripts only and the defaults are not what you need.

Ok thanks. Although I can now issue Terminal commands I can't seem to control the board through AVESBlue software. I can connect to the board in the software via AdvantivSerial but when i run any input scripts using script X it doesn't appear to do anything.

Did you disconnect the terminal emulator?  Aves and terminal are mutually exclusive

Also 'xrc+' and 'xrc-' turn echo on and off.

Ok, I can now connect via serial using AVES software but when I run scripts in script X I get the interference lines again. 

I don't get the interference lines using terminal but would like to affect and access the 3D comb filter settings that AVES software allows.

I also notice when I run through my crystalio processor it displays HDMI (HDCP) when I run the input CVBS command through terminal (no lines) but does not show HDCP source when running input script through AVES software (interference lines). Could this be cause the interference lines somehow? Something must be different by running input script through AVES compared with Terminal.

I'm still not having any luck running input scripts via AVES Blue. Still getting interference lines.

Also if I wish to control the 3D comb registers through Terminal is this the correct way to input commands? For example, if I wish to run SDP_3D_COMB_EN, Addr 90 (SDP), Address 0x12[0]   do I type:

wri2c 90 120 0    to disable 3D comb

wri2c 90 120 1    to enable 3D comb

Apologies but I'm a novice. I'm unsure if I include the number in the square brackets [ ] or not

Thank you for your help