Balluff - BVS CA-UB Technical Documentation
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