-16-
4.2
Available CXP Configurations
The CoaXPress standard allows a lot of different configurations (number of cables, transfer rates, …). You may
want to change it to fit your system needs.
This camera is compatible with:
•
CXP5_X4 = 4 links at 5Gbbps (default configuration)
•
CXP6_X4 = 4 links at 6Gbbps
CXP configuration is controlled by XML entry:
•
ConnectionConfig
Using a lower transfer rate allows longer cable length.
4.3
Acquisition Control - Frame Generation and Synchronization
The camera frame acquisition is controlled by using camera XML AcquisitionStart and AcquisitionStop
commands.
The camera frame acquisition can be synchronized by 3 different ways:
•
Camera Internal Generator:
(
AcquisitionMode
= “Continuous”)
In this mode, the camera uses its own sync generator and generates frames continuously when
acquisition is started. Frames are generated according to
AcquisitionFrameRate
value.
Please check next paragraph
4.4. Frame Rate and Exposure, page 17
for more information about
frame rate and exposure control.
•
External Synchronization Generator:
(
AcquisitionMode
= “Single Frame”)
In this mode, the camera uses an external signal to generate frames. You must apply a TTL signal the
Sync In input of the camera. Please respect signal limits (current and voltage) and use the Aux. to
BNC adapter or respect Aux. connector pinout (Hardware information in
page 23
paragraph).
Please check next paragraph
4.4. Frame Rate and Exposure, page 17
for more information about
frame rate and exposure control.
•
Synchronization over CoaXPress by Frame Grabber:
(
AcquisitionMode
= “CoaxPress”)
CoaXPress standard allows Frame Grabber synchronizing camera frame generation using specific
packets called
trigger packets
sent
on “CoaXPress uplink”.
The frame grabber sends 2 kind of trigger packets: rising_edge and falling_edge trigger packets. It
allows the camera to build a square synchronization signal:
o
Its period is the period of the rising_edge trigger packets.
o
Its pulse width is the time difference between falling_edge trigger packets and rising_edge
trigger packets.
So, it is very similar as using an external generator but controlled by user acquisition system (usually
a PC + a CoaXPress frame grabber).
Please check next paragraph
4.4. Frame Rate and Exposure, page 17
for more information about
frame rate and exposure control.
Please check your Frame Grabber manual to use its trigger over CoaXPress mode.
