Sensoray 826 - Manual (Page 51)

Register Value
Mode 0x00000000
Preload0 0x00000000
Periodic Timer
Periodically capture snapshots.
Register Value
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.
Register Value
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.
Register Value
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.
Register Value
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