Measurement-computing USB-1602HS-2AO Uživatelský manuál stáhnout pdf (Strana 43)

USB-1602HS-2AO User's Guide Specifications

Counters

Table 13. Counter specifications

Parameter

Specification

Number of channels

4 independent CTRL 0,1,2,3 (may be configured as gated if desired)

Modes

Counter, Period, Pulse width, Timing

Counter mode options

Totalize, Clear on Read, Rollover, Stop at top, 16-bit or 32-bit, any other channel can

decrement the counter

Period mode options

Measure x1, x10, x100, or x1000 periods, 16-bit or 32-bit, 4 time bases to choose from

(20.83 ns, 208.3 ns, 2.083 μs, 20.83 μs), any other channel can gate the period measurement

Pulse width mode options

16-bit or 32-bit values, 4 time bases to choose from (20.83 ns, 208.3 ns, 2.083 μs, 20.83 μs),

any other channel can gate the pulse width measurement

Timing mode options

16-bit or 32-bit values, 4 time bases to choose from (20.83 ns, 208.3 ns, 2.083 μs, 20.83 μs)

Resolution

16 or 32-bits

Maximum input frequency

20 MHz

Input type

TTL, rising edge triggered

Absolute maximum input

voltage

15V

De-bounce function

16 selections, from 500ns to 25.5ms, pos or neg edge, glitch detect and/or de-bounce modes

Required input current

±5 µA

Minimum pulse width

25 nS high, 25 ns low

Input high voltage

2.0 V minimum, 5.5 V maximum

Input low voltage

0.8 V maximum, 0 V minimum

Timers

Table 14. Timer specifications

Parameter

Conditions

Specification

Number of channels

Two: TMR/PWM0, TMR/PWM1

Effective frequency range

0.0112 Hz to 24 MHz

Period resolution

20.83 nS

Pulse width resolution

20.83 nS

Output high voltage

(IOH = –2.5 mA)

2.4 V minimum

Output low voltage (IOL = 2.5 mA)

0.4 V maximum

Output current

2.5 mA maximum per pin

1 2 ... 38 39 40 41 42 43 44 45 46 47 48

Komentáře k této Příručce

Žádné komentáře

Measurement-computing USB-1602HS-2AO Uživatelský manuál Strana 43

Komentáře k této Příručce

Související produkty a manuály pro Hardware Measurement-computing USB-1602HS-2AO