User`s manual

PC2-CamLink User's Manual Part I: PC2-CamLink Board • 39
Strobe
One strobe signal is available on pin 15 of the DB-15 connector (J2). The pulse duration and polarity
are programmable (up to 65 seconds).
The strobe signal is attained by using an LVT244 driver with the following electrical characteristics:
Electrical
parameters
Description Value
V
OH typ
Typical high-level output voltage 3.1 V @ -100µA
I
OH max
Maximum high-level output current -32mA (sourcing)
I
OL max
Maximum low-level output current 64mA (sinking)
Sapera Parameters for Strobe :
Refer to Strobe Method in the Sapera Acquisition Parameters Reference manual. Only
strobe method 1 is supported on PC2-CamLink.
CORACQ_PRM_STROBE_ENABLE = TRUE
CORACQ_PRM_STROBE_METHOD = CORACQ_VAL_STROBE_METHOD_1
CORACQ_PRM_STROBE_POLARITY = {CORACQ_VAL_ACTIVE_LOW
, CORACQ_VAL_ACTIVE_HIGH}
CORACQ_PRM_STROBE_DELAY: Pulse offset from trigger event
CORACQ_PRM_STROBE_DURATION: Pulse duration
CORACQ_PRM_STROBE_LEVEL = CORACQ_VAL_LEVEL_TTL
In CamExpert, these parameters are located under ‘Advanced Control Parameters’.
Select ‘Strobe Method Setting’.
IFC
Under IFC, PC2-CamLink offers two types of strobes: Fast Strobe and Slow Strobe. Fast
Strobe occurs immediately after the trigger. See below for diagram. The first trigger
falling edge immediately generates a strobe pulse. The strobe pulse duration is
programmable. This mode is often used with asynchronous reset cameras.
Fast Strobe
Ext. Trigger
Strobe
Strobe
delay
Strobe
duration
Figure 11: Fast Strobe
Note: PC2-CamLink does not support an exclusion region in Fast Strobe mode. A strobe