Instruction manual

Camera interfaces
MARLIN Technical Manua
l
Page 27
7.4 Operating the camera:
Power for the camera is supplied only via the FireWire™ bus.
The input voltage must be within the following range:
Vcc min.: +8 V
Vcc max.: +36 V
 An input voltage of 12 V is recommended to make most efficient use of the camera.
 The HiRose connector does not supply power to the camera.
7.5 Control and video data signals
The camera has 2 inputs and 2 outputs. These can be configured by software. The different modes
are described below.
7.5.1 Inputs
All inputs have been implemented as shown on the diagram below.
Figure 19: Input schematics
Flux voltage from LED type 1.5 V at 10 mA Cycle delay of the optical coupler
min. on-current: 5 mA
max. off-current: 0.25 mA
max. input current: 15 mA
min. pulse width @high
speed:
0.67 µs tpdHL:
tpdLH:
745 ns
760 ns
min. pulse width
@normal speed:
2.2 µs tpdHL:
tpdLH:
2275 ns
2290 ns
Table 15: Input characteristics