Using 2 BVS CA-MLC cameras in Master-Slave mode

Scenario

If you want to have a synchronized stereo camera array (e.g. BVS CA-MLC-202dG) with a rolling shutter master camera (e.g. BVS CA-MLC-202dC), you can solve this task as follows:

1. Please check, if all cameras are using firmware version 1.12.16 or newer.
2. Now, open ImpactControlCenter and set the master camera:
   
   
   
   Figure 1: ImpactControlCenter - Master camera outputs at DigOut 0 a frame synchronous V-Sync pulse
   
   

   Note

   Alternatively, it is also possible to use HRTC - Hardware Real-Time Controller HRTC to set the master camera. The following sample shows the HRTC - Hardware Real-Time Controller HRTC program which sets the trigger signal and the digital output.
   The sample will lead to a constant frame rate of 16 fps (50000 us + 10000 us = 60000 us for one cycle. 1 / 60000 us * 1000000 = 16.67 Hz).
   
   

   

   Figure 2: ImpactControlCenter - HRTC program sets the trigger signal and the digital output
   
   Do not forget to set HRTC as the trigger source for the master camera.
   
   

   

   Figure 3: ImpactControlCenter - HRTC is the trigger source for the master camera
   
   

3. Then, set the slave with ImpactControlCenter :
   
   
   
   Figure 4: ImpactControlCenter - Slave camera with TriggerMode "OnHighLevel" at DigIn 0

Connection using -UOW versions (opto-isolated inputs and outputs)

The devices should be connected like this:

Figure 5: Connection with opto-isolated digital inputs and outputs

Symbol	Comment	Input voltage	Min	Typ	Max	Unit
Uext.	External power		3.3		30	V
Rout	Resistor digital output			2		kOhm
Rin	Resistor digital input	3.3 V .. 5 V		0		kOhm
		12 V		0.68		kOhm
		24 V		2		kOhm

You can add further slaves.

Connection using -UTW versions (TTL inputs and outputs)

The devices should be connected like this:

Figure 6: Connection with TTL digital inputs and outputs

For this case we offer a synchronization cable called "KS-MLC-IO-TTL 00.5".

Note

There a no further slaves possible.

See also

• Technical Data for pin references.
• Technical Data Table of connector pin out of "12-pin through-hole type shrouded header (USB / Dig I/O)".
• Technical Data Electrical drawing "opto-isolated digital inputs" and "opto-isolated digital outputs".
• A predefined frame rate is also possible using HRTC.