Note 3: Rs-422 Shaft Encoder Input Specifications; Figure 28: Rs-422 Shaft Encoder Input Electrical Diagram - Dalsa Xtium-CLHS PX8 User Manual

Note 3: RS-422 Shaft Encoder Input Specifications

Dual Quadrature Shaft Encoder Inputs (phase A and phase B) connect to differential signals
(RS-422) or single ended TTL 5V source signals. The figure below shows the simplified
representation of these inputs.
• Maximum input voltage is +/- 7V relative to common with a differential voltage input of +/-
200mV.
All inputs have a 100-ohm differential resistor.
•
• Maximum input signal frequency is 10 MHz.
The Xtium-CLHS provides ESD filtering on-board.
•
See "Line Trigger Source Selection for Line scan
•
• Refer to Sapera parameters:
CORACQ_PRM_SHAFT_ENCODER_ENABLE CORACQ_PRM_SHAFT_ENCODER_DROP
or refer to CORACQ_PRM_EXT_LINE_TRIGGER_ENABLE
CORACQ_PRM_EXT_LINE_TRIGGER_DETECTION
CORACQ_PRM_EXT_LINE_TRIGGER_LEVEL (fixed at RS-422)
CORACQ_PRM_EXT_LINE_TRIGGER_SOURCE
• See also *.cvi file entries:
Shaft Encoder Enable, Shaft Encoder Pulse Drop,
or see External Line Trigger Enable, External Line Trigger Detection, External Line Trigger Level,
External Line Trigger Source.
For TTL single ended signals, connect a bias voltage to the RS-422 (-) input to ensure correct
•
detection of the logic state of the signal connected to the RS-422 (+) input. See the following
section for connection methods.
Xtium-CLHS PX8 User's Manual
Phase B
Phase A

Figure 28: RS-422 Shaft Encoder Input Electrical Diagram

PhaseB+
PhaseB-
From User
Interface
Connector
PhaseA+
PhaseA-
Applications" on page 40 for more information.
Technical Specifications • 73