User manual

Programmer’s Guide Page 4 of 66
3.8. Configuring AP101/AP201 Analyzers ......................................................................................................... 30
3.9. Configuring TC8xx Time-to-Digital Converters .......................................................................................... 31
3.10. Data Acquisition....................................................................................................................................... 31
3.10.1. Starting an Acquisition ......................................................................................................................... 32
3.10.2. Checking if Ready for Trigger ............................................................................................................. 32
3.10.3. Waiting for End of Acquisition ............................................................................................................ 32
3.10.4. Stopping/Forcing a D1-style Acquisition ............................................................................................. 33
3.10.5. Simultaneous multibuffer Acquisition and Readout (SAR) ................................................................. 34
3.10.6. Analyzer and Peak
TDC
Autoswitch mode............................................................................................... 34
3.11. D1-style Data Readout ............................................................................................................................. 36
3.11.1. Reading Digitizer Waveforms with the Universal Read Function ...................................................... 37
3.11.2. Reading Sequences of Waveforms ....................................................................................................... 37
3.11.3. Reading Raw Sequences of Waveforms............................................................................................... 39
3.11.4. Averaging Waveforms in a Digitizer ................................................................................................... 40
3.11.5. Reading an Averaged Waveform from an Averager ............................................................................ 40
3.11.6. Reading a RT Add/Subtract Averaged Waveform from an Averager .................................................. 42
3.11.7. Reading SSR Analyzer Waveforms ..................................................................................................... 42
3.11.8. Reading AP family Peak
TDC
Analyzer Data and Histograms ................................................................ 43
3.11.9. Reading U1084A Peak
TDC
Waveforms and Histograms........................................................................ 45
3.11.10. Reading AP101/AP201 Analyzer Waveforms ................................................................................. 45
3.12. T3-style Data Readout .............................................................................................................................. 50
3.13. Trigger Delay and Horizontal Waveform Position................................................................................... 50
3.14. Horizontal Parameters in Acquired Waveforms ....................................................................................... 51
3.15. Sequence Acquisitions ............................................................................................................................. 52
3.16. Time stamps ............................................................................................................................................. 52
3.17. External Clock and Reference .................................................................................................................. 53
3.17.1. External Reference ............................................................................................................................... 53
3.17.2. External Clock (Continuous) ................................................................................................................ 54
3.17.3. External Clock (Start/Stop) .................................................................................................................. 56
3.18. AS bus Operation ..................................................................................................................................... 57
3.18.1. Channel Numbering with AS bus ......................................................................................................... 57
3.18.2. Trigger Source Numbering with AS bus .............................................................................................. 58
3.19. Special Operating Modes ......................................................................................................................... 59
3.19.1. Frequency Counter ............................................................................................................................... 59
3.19.2. „Start on Trigger‟ .................................................................................................................................. 60
3.19.3. „Sequence Wrap‟ .................................................................................................................................. 60
3.20. Readout of Battery Backed-up Memories ................................................................................................ 61
3.20.1. Preparations before Power-Off ............................................................................................................. 61
3.20.2. Recovery after Power-Off .................................................................................................................... 61
3.21. Reading the Instrument Temperature ....................................................................................................... 62
3.22. Building applications that can Hibernate ................................................................................................. 62
4. APPENDIX A: ESTIMATING DATA TRANSFER TIMES ........................................................................ 63
4.1. Principles & Formulas .................................................................................................................................. 63
4.2. Examples ...................................................................................................................................................... 64
4.3. Comparison Chart for Typical Transfers ...................................................................................................... 65