Measurement-computing CIO-QUAD0x Manual de usuario descargar pdf (Pagina 17)

5 ELECTRICAL SPECIFICATIONS

(All Specifications typical for 25°C unless otherwise specified.)

INPUT SECTION

Receiver type SN75ALS175 quad differential receiver

Configuration Each channel consists of Phase A input, Phase B input and Index input;

each input is switch & jumper-selectable as single-ended or differential.

Differential Phase A, Phase B and Index (+) inputs at user connector routed to (+)

inputs of differential receiver.

Phase A, Phase B and Index (-) inputs at user connector routed to (-)

inputs of differential receiver.

Single - ended Phase A, Phase B and Index (+) inputs at user connector routed to (+)

inputs of differential receiver.

Phase A, Phase B and Index (-) inputs at user connector routed to ground.

(-) inputs of differential receiver routed to +3V reference.

Number of channels

CIO-QUAD02 2

CIO-QUAD04 4

Common mode input voltage range ±12V max

Differential input voltage range ±12V max

Input sensitivity ±200mV

Input hysteresis 50mV typ.

Input impedance 12 kohm min.

Propagation delay 27 ns max.

Absolute maximum input voltage

Differential ±25V max.

Miscellaneous Meets EIA RS422, 423, 485 and CCITT V.10, V.11, X.26, X.27.

Designed for Multipoint busses on long lines in noisy environments

COUNTER SECTION

Counter type LS7266R1 24-bit Dual-axis Quadrature Counter

Quadrature Mode

Clock frequency 4.3 MHz max

Separation 57 ns min

Clock pulse width 115 ns min

Index pulse width 85 ns min

Count Mode

Clock frequency 30 MHz max, (25 MHz max Mod-N mode)

Clock A - high pulse width 16 ns min

Clock A - low pulse width 16 ns min

Filter clock (FCK) 10 MHz

Digital filter rate 10 MHz, software-selectable divider (1 to 256 in single steps)

Crystal oscillator (FCK source)

Frequency 10 MHz

Frequency accuracy 100 ppm

1 2 ... 12 13 14 15 16 17 18 19 20

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Measurement-computing CIO-QUAD0x Manual de usuario Pagina 17

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