Click the System Settings
button at the top of the GUI to display the System Settings panel shown in
Figure 4-3.
Within the
System Settings panel, the user can control the orientation of the image,
the LEDs, and the optical inversion.
- Image Orientation –
Depending on the orientation of the projected image, the image requires to be
flipped on the short or long axis.
- LED Controls – The LED
controls allow the user to manually control the state of the LEDs or allow the
internal DLPC900 sequencer to control the LEDs.
Note: If the LEDs are disabled in
manual control, then the LEDs must be enabled before switching to automatic
control (internal DLPC900 sequencer).
The LED current regulates the
brightness of the LEDs. Setting the Invert PWM causes the LED currents to
have an opposite effect on the LEDs as the current is changed. When
manipulating the LED frequency and current,TI recommends to consider the LED
current value from 0-255 (0.39% per step) as the duty cycle where 255 equals
approximately 100% (99.61%) Internally the software then calculates the PWM
value depending on the set frequency and duty cycle. Setting the Invert PWM
changes the polarity of the PWM signal, which causes the LED currents to
have an opposite effect on the LEDs as the current is changed.
Note: DLP LightCrafter Dual DLPC900 EVMs do not come with
LEDs or optical engines of any kind.
- Pattern Display Invert
Data – This setting allows the user to invert the data to the DMD. The
setting must be set before any Pattern LUT updates are sent to the DLPC900 and
the pattern sequence must be in the stopped state. This setting is not
applicable to Video Mode.
- DMD Park – This setting
allows the user to park and un-park the DMD. Using the isolated Park/Un-park
command is no longer recommended except for debugging purposes. If the Display
Mode is set to Pre-stored pattern mode, Video pattern mode or Pattern On-The-Fly
mode, the pattern sequence must be stopped prior to execution of this
command.
- DMD Faults:
- DLPA200 Fault -
Only applies to the DLP5500 DMD and is grayed out for all Dual DLPC900
DMDs
- DMD Communication
Error - Get the status result of the primary controller query of
the DMD type (typically only queried during initialization).