Motec SDL3 - Page 46

42 Appendices
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
Hysteresis
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