Dreamboard

Hello M

I think I have similar issues with my new DM 500 HD - see my post : DM500HD and Diseqc 1.2

My Metronics steerable dish worked fine with my DM 7000, but is very erratic with the DM 500 HD.

The DM 500 HD works fine with a single satellites, and seems OK when I use the a subset of the 3 with default service lists (28.2E, 19.2E, 13.0E). But when I try to re-scan one of these, or add another (typically 5.0W), it seems to loose position, so that subsequent moves can point the dish anywhere. I cannot even make the positioner setup goto /store page work reliably.

Can you point em to any threads which might a clue as to how to improve this.

Thanks

John

Hi

I had a very helpful reply to my own post on this:
DM500HD and Diseqc 1.2

I have now got my dish visiting 3 satellites as required, and this has kept position over a restart and power down.

John

will this help if you are still having problems
i have never use the usuals settings long/lat
for diseqc motors having always used the 36v motor
and now receivers dont have this feature i have a v-box
try this for the motor set up on usuals
menu.setup.ok service search>ok tuner configuration>ok
choose tuner>ok then on the reception settings panel
set the configuration mode to simple
next line down> mode set to possitioner
then enter your long/lat settings
now the motor setting is set for usuals
then exit and go to manual scan >ok
on the service scan set type of scan for multisat
then enable the sats you wish to scan from the list
and after this click>ok and the scan of sats and chns will start
as i said i alway start from my west satellite and scan west to east

did you mean 15ms tone-drop instead of voltage-drop?
Cause voltage-drop does not make sense (it's not required).

yes, i can confirm - E2 dreamboxes friendship with different diseq switches is something ....
and different models have different simpthoms and solutions

sometime helps:
change tone amplitude;
set repeat of diseq commands;
increase voltage;
send some fake committed comad before send your uncommitted comand;
add parameter `config.Nims.0.diseqc13V=true` into /etc/enigma2/settings, but with that parameter last year 8k-s cant get signal at all;

sometime nothing(had to change LNBs and switch):
http://www.dream-multimedia-tv.de/board/index.php?page=Thread&threadID=13599

p.s.
also dmm tuner drivers are buggy, on 8k-s you can set any parameter in Inversion and get a signal

For the past years (can't remember how many!) I have run a venerable DM7000 with Enigma 1 and a HiSat HH100 positioner. Over Christmas the DM7000 died.

I now have a DM500HD which works fine with a static dish, but seems completely unable to drive the positioner. I have tried the various suggestions made in this and other threads with no success: no movement of the positioner at all.

I'm wondering if anyone else has had this experience? I'm uncertain at the moment whether the Dreambox is broken or whether this behaviour is just a symptom of the DiSeq incompatability issues noted by others.

Any views or advice much appreciated.

Last November I upgraded my DM7000-S to a DM500HD. The picture quality is excellent.

But I had a problem with setting up and maintaining satellite positions with Diseqc 1.2 (not USALS) steerable dish. This had been working for years with the DM7000-S.

After software upgrades and a replacement tuner had failed to improve the situation, I decided to follow up a suggestion (this thread) that the Diseqc commands on this newer Dreambox (and maybe other Enigma2 boxes) were not correctly formatted.

I borrowed a 'scope from work, and found I could tap of the co-ax inner into a passive circuit which which keeps the 22Khz tone and also rectifies it to show the pulse widths. I planned to detect and decode the protocol from the bit level upwards.

I fed the signals into a PC audio input box (Behringer UFO202), and cranked up Audacity to sample stereo at 100Khz. Then I could see, and record, the 22Khz signals, and the variable width pulses.

With this logging in place, I started to set up and the satellite positions, and exercise the dish movements. I would be able to go back over the recording immediately before an error, and check the command formats.

And I kept adding satellites, moving the dish - and it never went wrong. I have had this setup in place for 10 days now, with twice daily recordings from each of 5 satellites between 5.0W and 28.2E, and it has not put a foot wrong.

So, as far I am concerned, the problem is fixed. If I had not spent enough time on this already, I would experiment to find out what is the minimum circuit I need to keep the system running, but I am just pleased to have it going.

So if anyone encounters similar issues, just try loading the signal a bit - probably a 100nF capacitor and 1.2K resistor would have done the trick.

If anyone wants, I can post the full circuit and some logged data.

Best wishes

John

HI guys,

I'm a new user of a DM500 HD, and like most of you I'm facing an issue with the DiseqC. Doesn anyone find out the real problem? Is there any fix or setting or also a new device to make the DiseqC working well (I'm not using a motor, but 3 LNBs).

Your help is appreciated.

best regards
Filipe