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Declarations of Conformity
Xtium2-CL MX4 User's Manual
Note 3.3: Interfacing to an Open Collector Output
RS-422 (+) input
RS-422 (-) input
FG/system GND
DC
Bias Voltage
Vcc/2
GND
Frame Grabber System
Interfacing Open Collector Output to RS-422 Inputs
Generic Open Collector Output
Vcc
Vcc
Pull-up resistor needed if it is not
already present in the Shaft Encoder.
Value depends on the characteristics
of the Shaft Encoder Output.
100 ohm
Figure 40: Interfacing to an Open Collector Output
•
NOTE: User must select the Shaft Encoder RS-422 level when using this mode
(
CORACQ_PRM_SHAFT_ENCODER_LEVEL
= CORACQ_VAL_LEVEL_422 (0x2)
).
Note 3.4: Interfacing directly to a TTL (also called Push-Pull) Output
FG/system GND
GND
Frame Grabber System
Interfacing TTL Output via a Line Buffer/Driver
TTL signal source & Buffer Driver
(example: 74ACT244)
RS-422 / TTL (+) input
Figure 41: Interfacing TTL to TTL Shaft Encoder Inputs
•
NOTE: User must select the Shaft Encoder TTL level when using this mode
(
CORACQ_PRM_SHAFT_ENCODER_LEVEL
= CORACQ_VAL_LEVEL_TTL (0x1)
).
