Photron FASTCAM-PCI R2, Hardware Manual

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FASTCAM-PCI R2 Hardware Manual
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Note: The polarity must match that selected in the ‘Ext Sync Out’ box of the master camera or that
of the sync signal from the external source being used.
Note: When more than one slave cameras are involved, each of them must be individually set up.
2.4.4.3 How External Sync Signal Mode Works?
External Sync Signal Mode works as follows (See 2.4.4.1. and 2.4.4.2.):
1. As soon as either the ‘Others pos’ or ‘Others neg’ synchronization mode is selected in the ‘Ext
Sync In‘ box for a slave camera, this camera can be synchronized with and triggered by the master
camera. In other words, this camera has been set up for external sync mode operation.
2. As a selection is made in the ‘Ext Sync In‘ box, the software makes frame-accurate calculations
of the frame rate from the vertical sync signal being fed by the external source (master camera or
external generator) to synchronize this slave camera.
3. When the vertical sync signal (frame rate) from the external source is changed, you are required
to re-select mode of synchronization in the ‘Ext Sync In‘ box so that the software can re-calculate
the frame rate for the slave camera to follow.