Mosaic3
45
Version 3.5 rev 8 May 2019
OPERATION
5.4.3 m
ask
r
eferencing
m
odes
If masks are loaded onto the Mosaic’s on-board memory then there are two ways of referencing which mask to select
from memory to expose:
Software
A software command from the control PC identifies the required mask for Exposure.
Hardware
The required mask is referenced by an 8 bit binary address input through the D-SUB External Interface Connector.
5.4.4 t
rigger
m
odes
There are multiple ways to trigger the exposure of an illumination pattern. The method available depends on the
operational and referencing modes selected.
Mirror On
A software command Exposes the selected mask and leaves it exposed indefinitely.
Mirror Off
A software command turns all of the DMD Mirrors ‘Off’ and leaves them in this state indefinitely.
Expose
A software command Exposes the currently selected mask for the defined exposure time.
Sequence Start
A software command triggers the Mosaic head to execute a predefined sequence of masks.
External Expose
A hardware signal is received via the External Trigger connector (SMA or D SUB) which exposes the currently selected
mask for the defined Exposure time.
In Sequencing Mode the end of the exposure increments to the next mask, and awaits the next External Trigger to initiate
its exposure.
External Bulb Mode
A hardware signal is received via the External Trigger connector (SMA or D SUB) which begins to expose the mask on the
rising edge of the Trigger Signal and ends the exposure on the falling edge.
In Sequencing Mode the falling edge of the of the trigger signal increments to the next mask and awaits the next rising
edge of the Trigger Signal to initiate its exposure.
External Sequence Start
A hardware signal is received via the External Trigger connector (SMA or D SUB) which triggers the Mosaic head to
execute a predefined sequence of masks.
Compatible Trigger Modes
Operational Modes
Mask
Reference
Mode
Mirror On
Mirror Off
Expose
Sequence
Start
External
Expose
External
Bulb
External
Sequence
Start
Single Shot Mode
N/A
-
-
Mask
Memory
Mode
Referencing
Software
-
-
Hardware
-
-
Sequencing
Software
-
-
*
*
*