Motec Systems C185 - Page 50

MoTeC Appendices 45
Digital Inputs
Suitable for: Switch to 0 V
Logic signal and open collector device (e.g. Hall
Switch)
Pull-up Resistor: 2200 ohms to 3.3 V
Voltage Range: 0 to 15 V
Positive Trigger Threshold: 2.4 V max
Negative Threshold: 0.6 V min
Hyst eresis: 0.4 V min
Update Rate: 100 times / second
Filter Time Constant: 22 usec
Measurement Methods:
Frequency
Resolution 0.1 Hz
Maximum Frequency 3200 Hz
Rising Edge Triggered
Period 1 usec
Measures period between rising edges
Resolution 1 usec
Maximum 32 msec
Period 100 usec
Measures period between rising edges
Resolution 100 usec
Maximum 3.2 sec
Pulse Width 1 usec
Measures pulse low time
Resolution 1 usec
Maximum 32 msec
Pulse Width 100 usec
Measures pulse low time
Resolution 100 usec
Maximum 3.2 sec