37-Pin DSUB Signal Connections for Counters
The following table lists the default input terminals for various counter measurements for devices that use the 37-Pin DSUB connector such as the NI 6010, NI 6154, and NI 623X. You can use a different PFI line for any of the input terminals. To change the PFI input for a measurement, use the NI-DAQmx channel attributes/properties.
Input
| Measurement | Ctr0 | Ctr1 |
|---|---|---|
| Count Edges | Edges: PFI 0 Count Direction: PFI 2 |
Edges: PFI 3 Count Direction: PFI 5 |
| Pulse Width Measurement | PFI 1 | PFI 4 |
| Period/Frequency Measurement (Low Frequency with One Counter) | PFI 1 | PFI 4 |
| Period/Frequency Measurement (High Frequency with Two Counters) | PFI 0 | PFI 3 |
| Period/Frequency Measurement (Large Range with Two Counters) | PFI 0 | PFI 3 |
| Semiperiod Measurement | PFI 1 | PFI 4 |
The following table lists the output terminals for counter output. You can use a different PFI line for any of the output terminals.
Output
| Ctr0 | Ctr1 |
|---|---|
| PFI 6 | PFI 7 |