Pulse measurement specifications

NOTE:

Conflicts can occur when a control port pair is used for different instructions (TimerInput(), PulseCount(), SDI12Recorder(), WaitDigTrig()). For example, if C1 is used for SDI12Recorder(), C2 cannot be used for TimerInput(), PulseCount(), or WaitDigTrig().

Maximum Input Voltage: ±20 VDC

Maximum Counts Per Channel: 2³²

Maximum Counts Per Scan: 2³²

Input Resistance: 5 kΩ

Accuracy: ±(6 ppm of reading + 0.00001)

Switch closure input

Terminals: C1-C8

Pull-Down Resistance: Configurable in terminal pairs with 100 kΩ

Pull-Up Resistance: Configurable in terminal pairs with 100 kΩ (weak) or 2.2 kΩ (strong)

Maximum Input Frequency: 250 Hz

Minimum Switch Closed Time: 1 ms

Minimum Switch Open Time: 1 ms

Maximum Bounce Time: 1 ms open without being counted

Software Debounce Time: 1 ms

High-frequency input

Terminals: C1-C8

Pull-Down Resistance: Configurable in terminal pairs with 100 kΩ

Pull-Up Resistance: Configurable in terminal pairs with 100 kΩ (weak) or 2.2 kΩ (strong)

Maximum Input Frequency: 1 MHz