User manual

Programmer’s Guide Page 4 of 64
3.10.4. Stopping/Forcing a D1-style Acquisition ............................................................................................. 30
3.10.5. Simultaneous multibuffer Acquisition and Readout (SAR) ................................................................. 31
3.10.6. Analyzer and Peak
TDC
Autoswitch mode ............................................................................................. 32
3.11. D1-style Data Readout ............................................................................................................................. 34
3.11.1. Reading Digitizer Waveforms with the Universal Read Function ....................................................... 34
3.11.2. Reading Sequences of Waveforms ....................................................................................................... 35
3.11.3. Reading Raw Sequences of Waveforms............................................................................................... 36
3.11.4. Averaging Waveforms in a Digitizer ................................................................................................... 37
3.11.5. Reading an Averaged Waveform from an Averager ............................................................................ 37
3.11.6. Reading a RT Add/Subtract Averaged Waveform from an Averager .................................................. 39
3.11.7. Reading SSR Analyzer Waveforms ..................................................................................................... 39
3.11.8. Reading AP family Peak
TDC
Analyzer Data and Histograms ............................................................... 40
3.11.9. Reading U1084A Peak
TDC
Waveforms and Histograms ...................................................................... 42
3.11.10. Reading AP101/AP201 Analyzer Waveforms ................................................................................. 42
3.12. Trigger Delay and Horizontal Waveform Position................................................................................... 47
3.13. Horizontal Parameters in Acquired Waveforms ....................................................................................... 47
3.14. Sequence Acquisitions ............................................................................................................................. 48
3.15. Time stamps ............................................................................................................................................. 48
3.16. External Clock and Reference .................................................................................................................. 49
3.16.1. External Reference ............................................................................................................................... 49
3.16.2. External Clock (Continuous) ................................................................................................................ 50
3.16.3. External Clock (Start/Stop) .................................................................................................................. 52
3.17. AS bus Operation ..................................................................................................................................... 53
3.17.1. Channel Numbering with AS bus ......................................................................................................... 54
3.17.2. Trigger Source Numbering with AS bus .............................................................................................. 54
3.18. Special Operating Modes ......................................................................................................................... 55
3.18.1. Normal Acquisition (mode 0)............................................................................................................... 56
3.18.2. Stream Data (mode 1) .......................................................................................................................... 57
3.18.3. Averager (mode 2) ............................................................................................................................... 57
3.18.4. Dual Memory (mode 3) ........................................................................................................................ 57
3.18.5. Peak
TDC
(mode 5) ................................................................................................................................. 57
3.18.6. Frequency Counter (mode 6) ................................................................................................................ 58
3.18.7. SSR – Sustained Sequential Recording (mode 7) ................................................................................ 58
3.18.8. DDC – Digital Down-Conversion (mode 12) ...................................................................................... 58
3.19. Readout of Battery Backed-up Memories ................................................................................................ 59
3.19.1. Preparations before Power-Off ............................................................................................................. 59
3.19.2. Recovery after Power-Off .................................................................................................................... 59
3.20. Reading the Instrument Temperature ....................................................................................................... 59
3.21. Building applications that can Hibernate ................................................................................................. 60
4. APPENDIX A: ESTIMATING DATA TRANSFER TIMES ........................................................................ 61
4.1. Principles & Formulas .................................................................................................................................. 61
4.2. Examples ...................................................................................................................................................... 62
4.3. Comparison Chart for Typical Transfers ...................................................................................................... 63