Chapter 19 Capturing from External I/O Devices
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19
Capturing from External I/O Devices
This chapter provides technical information for connecting external I/O devices to the EXT I/O connector of the DS-L3.
Inputting a trigger signal from the external device to the EXT .I/O connector of the DS-L3 enables trigger capture.
When connecting the DSC connector of the Nikon MIC Ni series or Ci series, images can be captured by button operation on
the side of the MIC.
Note: Before connecting external I/O devices, make sure to turn off the DS-L3 and external devices.
19.1
Functions of the EXT I/O Connector
The EXT I/O connector has the following three functions:
(1) Perform capture operation when a capture signal is input from external
As in the case of capturing by pressing the [CAPTURE] button of [CAMERA MENU], this function operates the DS
camera head in normal image mode (FULL, 2x2, 4x4, FAST, ROI-L, ROI-S, and C.SCAN), and capture an image when
a capture signal is input.
The circuit related to capture is represented at the part from 3 pin to GND shown in the circuit diagram on the next
page.
•
Capture input signal :
Capturing by switch-on (close) between 3 pin and GND
(2) Perform trigger capture when a trigger signal is input from external
(supported DS camera heads: DS-Qi1Mc)
This function operates the DS camera head in trigger mode combining it with the NIS-Elements.
The circuit related to trigger capture is represented as the whole of the circuit diagram shown in the next page.
•
Trigger input signal :
Triggered by switch-off (open) between 3 pin and GND
Note: The logic is opposite to that of capture.
(3) Output a synchronous signal to external devices
When capturing images (including capture by trigger operation), an exposure timing signal is output to the external
device to notify the camera status.
The circuit related to a synchronous signal is represented at the part from 1 pin to GND shown in the circuit diagram on
the next page.
•
Exposure timing signal :
Between 1 pin and GND, Lo Active
Capturing from External I/O Devices
19
Chapter
Содержание DS-L3
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