Lists all of the signal sources of the signal from which the frequency will be calculated.
public enum MccDaq.SignalSource
| Member | Value |
| TcPrevCtr | 0 |
| CtrInput1 | 1 |
| CtrInput2 | 2 |
| CtrInput3 | 3 |
| CtrInput4 | 4 |
| CtrInput5 | 5 |
| Gate1 | 6 |
| Gate2 | 7 |
| Gate3 | 8 |
| Gate4 | 9 |
| Gate5 | 10 |
| Freq1 | 11 |
| Freq2 | 12 |
| Freq3 | 13 |
| Freq4 | 14 |
| Freq5 | 15 |
| CtrInput6 | 101 |
| CtrInput7 | 102 |
| CtrInput8 | 103 |
| CtrInput9 | 104 |
| CtrInput10 | 105 |
| Gate6 | 106 |
| Gate7 | 107 |
| Gate8 | 108 |
| Gate9 | 109 |
| Gate10 | 110 |
| Freq6 | 111 |
| Freq7 | 112 |
| Freq8 | 113 |
| Freq9 | 114 |
| Freq10 | 115 |
| CtrInput11 | 201 |
| CtrInput12 | 202 |
| CtrInput13 | 203 |
| CtrInput14 | 204 |
| CtrInput15 | 205 |
| Gate11 | 206 |
| Gate12 | 207 |
| Gate13 | 208 |
| Gate14 | 209 |
| Gate15 | 210 |
| Freq11 | 211 |
| Freq12 | 212 |
| Freq13 | 213 |
| Freq14 | 214 |
| Freq15 | 215 |
| CtrInput16 | 301 |
| CtrInput17 | 302 |
| CtrInput18 | 303 |
| CtrInput19 | 304 |
| CtrInput20 | 305 |
| Gate16 | 306 |
| Gate17 | 307 |
| Gate18 | 308 |
| Gate19 | 309 |
| Gate20 | 310 |
| Freq16 | 311 |
| Freq17 | 312 |
| Freq18 | 313 |
| Freq19 | 314 |
| Freq20 | 315 |