DLP3010EVM-LC: DLP3010EVM-LC

Hello,

Is Green LED "D1"  lit on the EVM? this is the HOST_IRQ signal which shows the chipset is fully initialized

Is Jumper J3 connecting pins 2 and 3? this will configure the 3DR pin for external trigger.

Is the external trigger signal being seen at the controller? there is a not inserted resister "R6" one of this resistors pads are directly connected to the 3DR pin. can you see the signal there?

You may also try reprogramming the EVM firmware. you can find this on the product page for the EVM.

Regards,

Arthur Brown

Hello,

Firmware was updated. The external signal was given properly - no response.

Initially, it was working - approx. for a period of 2 months (module was not frequently used).

Was there any damage to the EVM before this feature stopped working? 

Regards,

Arthur Brown

No, there was none.

Regards

Anna Pakuła

Hello Anna, 

Can you please let us know more about your usecase? I assume you want to display patterns via Internal Pattern mode using the Trigger In functionality. If yes, can you please check the status of Pattern Ready signal. 

Regards,

Mayank

Hello, 

We can operate, flash .iso file, even trigger sequence with GUI tool, even HDMI is working. Board only doesn't seem to react to "Trigger in". As you suggested, we have checked whether if the signal is present on pads of resister "R6", (I didn't have access to the oscilloscope at the time of testing, I used only the multimeter) signals were not affected by the state of trigger in (regardless of setting trigger in on high/low active). There was also no direct connection of these pads between "trigger in" (using diode mode of multimeter). On the pad closer to the edge, there was 0V compared to board ground, on the second one (closer to the chip), it was 3.5 - 4.5V fluctuating slowly. I didn't notice any correlation with the "trigger in" state.

Regards

Anna

Hi Anna,

From what you say it sounds like the Trigger in pin (3DR)isnt seeing the signal. I would like you to perform one more test. 

Ensure the jumper J3 is connected between pins 2,3, and measure the voltage on R35. this resistor is populated. this is a pullup resistor for the trigger in. 

you should see this voltage on R35 change. if not, then there is a chance that the IC "U5" is damaged. It is possible to bypass this IC. However I believe this will invert the signal. So the pin may become active-low instead of active high or vice versa.

Also, Please look at the pattern ready signal that Mayank suggested.

Arthur