Apex Digital Tracer, Reference Manual

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11 Application Notes
11.1 Quadrature Decoder
Connecting a quadrature output incremental optical shaft encoder to the counter/timer input.
Wiring: Phase A CT_GATE1 J13.4
Phase B CT_CLK1 J13.2
Common GND J13.14
Power +5V J13.15
Counter/Timer
Setup Resister: CT_GATE1 inverted True
CT_CLK1 inverted False
CT_CLK1 source CT_IN1
CT_GATE0 inverted True
CT_GATE0 source CT_GATE1
CT_CLK0 inverted True
CT_CLK0 source CT_IN1
Base_A 12 <= 0000 1001
Base_A 13 <= 1?01 1???
where ‘?’ is the configuration for Counter/Timer #2.
Software setup:
base_address = 0x300;
Counter/Timer Setup Register = 0x0000
CT0: Clock: Inverted=False, Source=CT_IN0
Gate: Inverter=False, Source=CT_GATE1
CT1: Clock: Inverted=False, Source=CT_IN1
Gate: Inverter=False, Source=CT_GATE1
CT2: Clock: Inverted=False, Source=CT_IN2
Gate: Inverter=False, Source=CT_GATE2
Tracer Reference Manual 11.1 Quadrature Decoder
32 Friday, June 08, 2018
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