Measurement-computing LGR-5320 Series Manual do Utilizador descarregar pdf (Página 34)

LGR-5320 Series User's Guide Specifications

Counters

Table 10. Counter specifications

Parameter Condition Specification

Counter type  LGR-5325: Conventional

 LGR-5327/5329: Conventional and Quadrature (x1, x2, x4)

Number of channels 4

Inputs LGR-5325: Counter, Up/Down, Gate

LGR-5327/5329: Phase A+/A–, Phase B+/B–, Index +/–

Resolution (programmable) 32-bit or 16-bit.

Count Modes Up/down counting

Period/frequency counting

Modulo-N

Quadrature counting (LGR-5327/5329 only)

Debounce times (programmable) 16 steps from 500 ns to 25 ms; positive or negative edge

sensitive; glitch detect mode or debounce mode

Timebase accuracy 50 ppm

LGR-5325

only

Input voltage range 0 V to 5.5 V

Input type TTL

Input

characteristics

49.9 KΩ pull-down resistor

Maximum input

voltage range

–0.5 V to 7.0 V

Input high voltage 2.0 V

Input low voltage 0.8 V

LGR-5327/

5329 only

Receiver type Quad DIFF receiver

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

input, with each input switch selectable as SE or DIFF.

DIFF  Phase A, Phase B and Index (+) inputs at user connector routed

to (+) inputs of the DIFF receiver.

 Phase A, Phase B and Index (–) inputs at user connector routed

to (–) inputs of the DIFF receiver.

SE  Phase A, Phase B and Index (+) inputs at user connector routed

to (+) inputs of DIFF receiver.

 Phase A, Phase B and Index (–) inputs at user connector routed

to ground.

 (–) inputs of DIFF receiver routed to +3 V reference.

Common mode

input voltage range

±12 V max

Differential input

voltage range

±12 V max

Input sensitivity ±200 mV

Input hysteresis 50 mV typ

Input impedance 12 kΩ min

Absolute

maximum input

voltage

DIFF ±14 V max

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 42 43

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