Pattern Modes
38
DLPU028C – October 2014 – Revised November 2016
Copyright © 2014–2016, Texas Instruments Incorporated
Operating the DLP LightCrafter 6500 and 9000
3.6.5 Creating a Pattern Sequence With DMD Block Load
Creating a pattern sequences with DMD Block Load achieves higher pattern rates by using a subset of the
DMD blocks. See DMD Block Load command in the DLPC900 Software Programmer’s Guide (
for a description of this command.
Follow these steps to create a
Pattern On-The-Fly
pattern sequence with only three DMD active blocks.
1. Make sure the EVM is powered up and operating correctly, and the
Connected
radio-button is lit
green
.
2. Select
Pattern On-The-Fly Mode
from the
Operating Mode
group box, and then select the
Pattern
Design
button so that the large black panel is displayed as shown in
3. Select the
Load
button from the menu bar and select the
Block_Load.txt
file located in the sample
images directory. Be sure to select the correct file for the EVM being used.
4. The pattern design should look similar to
.
5. Select the
Pattern Settings
button.
6. Within the
DMD Active Blocks
, select 6 for the
Start Block
and select 8 for the
End Block
, and then
Select
Set
.
7. Select the
Pattern Design
button.
8. Select the
Update LUT
button.
9. Select the
Start
button to run the sequence.
10. Select the
Stop
button to end this example.
You will notice that pattern 0 is displayed the same way as pattern 2 even though pattern 0 contains
image data for all blocks. This shows that only blocks 6, 7, and 8 are active while all other blocks are in
the off state.
NOTE:
The performance of the mirrors in the blocks that are not active will be affected by prolonged
use of being in the off state. To optimize the mirrors,
DMD Idle Mode
should be enabled as
often as possible. This mode will provide a 50/50 duty cycle across the entire DMD mirror
array, where the mirrors are continuously flipped between the on and off states. See
DMD
Idle Mode
command in the DLPC900 Software Programmer’s Guide (
) for a
description of this command. The
DMD Idle Mode
command is located in
within
the
Pattern Mode
panel.