Dalsa Xtium-CL MX4 - Figure 34: RS-422 Shaft Encoder Input Electrical Diagram; Note 3: RS-422 Shaft Encoder Input Specifications

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Xtium-CL MX4 User's Manual Technical Specifications • 105

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 signals. The figure below shows the simplified representation of these

inputs.

From User

Interface

Connector

100Ω

PhaseB+

PhaseB-

100Ω

PhaseA+

PhaseA-

Phase B

Phase A

Figure 34: RS-422 Shaft Encoder Input Electrical Diagram

• RS-422 differential line receiver used is am26lv32.

• Input signals must meet the following

• Maximum differential input voltage is +/- 7V.

• Minimum differential voltage level is +/- 200mV.

• Both inputs have a 100-ohm differential resistor.

• Maximum input signal frequency is 10 MHz.

• The Xtium-CL provides ESD filtering on-board.

• See Line Trigger Source Selection for Line scan Applications for more information.

• 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.