Sensoray 826 Manual do Utilizador descarregar pdf (Página 51)

Mode 0x00000000

Preload0 0x00000000

Periodic Timer

Periodically capture snapshots.

Mode 0x00402020

Snapshot Configuration 0x00000004

Preload0 Period in µs

Delay Timer

Call S826_CounterPreload to start the timer, then S826_CounterSnapshotRead to wait for the delay time to elapse.

Mode 0x00400520

Snapshot Configuration 0x00000004

Preload0 Delay in µs

Frequency Measurement

Measure frequency by counting clocks applied to the ClkA input for one second intervals. At the end of each interval, a

snapshot is captured and the next measurement begins automatically. The snapshot counts indicate measured frequency

in Hz.

Mode 0x00008009

Snapshot Configuration 0x00000010

Preload0 0x00000000

Period Measurement

Measure the period of a signal applied to the IX input by counting internal clocks during one input cycle. At the end of

each cycle, a snapshot is captured and the next measurement begins automatically. The snapshot counts indicate

measured period in µs.

Mode 0x00008020

Snapshot Configuration 0x00000010

Preload0 0x00000000

Pulse Width Measurement

Measure the width of pulses applied to the IX input by counting internal clocks during one pulse. At the end of each

pulse, a snapshot is captured and the next measurement begins automatically. The snapshot counts will indicate the

measured pulse width in µs.

826 Instruction Manual 46 Counters

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Sensoray 826 Manual do Utilizador Página 51