User manual
Table Of Contents
- SAFETY INSTRUCTIONS
- GETTING STARTED
- QUICK REFERENCE
- Menu Tree / Operation Shortcuts
- Convention
- Acquire Key
- Acquire Key - Segments
- Autoset Key
- CH1 ~ 4 Key
- Cursor Key
- Display Key
- Help Key
- Math Key
- Measure Key
- Hardcopy Key
- Run/Stop Key
- REF Key
- Save/Recall Key
- Test Key
- Test Key – Go-NoGo
- Trigger Type Menu
- Trigger Edge Menu
- Trigger Delay Menu
- Trigger Pulse Width Menu
- Trigger Video Menu
- Trigger Pulse Runt Menu
- Trigger Rise & Fall Menu
- Trigger Timeout Menu
- Utility Key
- Utility Key – I/O
- Utility Key – File Utilities
- Utility Key – Wave Generator - Demo Outputs
- Search - Edge
- Search – Pulse Width
- Search - Runt
- Search – Rise/Fall Time
- Zoom Key
- Option Key
- Default Settings
- Built-in Help
- Menu Tree / Operation Shortcuts
- MEASUREMENT
- CONFIGURATION
- OPTIONAL SOFTWARE and APPS.
- SAVE/RECALL
- FILE UTILITIES
- HARDCOPY KEY
- REMOTE CONTROL CONFIG
- MAINTENANCE
- FAQ
- I connected the signal but it does not appear on the display.
- I want to remove the (Measurement result / FFT result / Help contents) from the display.
- The waveform does not update (frozen).
- The probe waveform is distorted.
- Autoset does not catch the signal well.
- I can’t save files to the internal memory.
- The display image printout is too dark on the background.
- The date and time settings are not correct.
- The accuracy does not match the specification.
- APPENDIX
- INDEX
GDS-2000A Series User Manual
108
XY Mode
Cursors can be used with XY mode.
See the Cursor chapter for details.
Page 85
Set the Sampling Mode
Background
The GDS-2000A has two types of sampling modes:
ET (Equivalent Time) and Sin(x)/x interpolation.
Equivalent time sampling is able to achieve a
sample rate of 100GSa/s when sampling periodic
waveforms. Sin(x)/x interpolation uses a sinc
interpolation formula to reconstruct a continuous
signal between sampled points.
Sin(x)/x
One sample of data is used to
reconstruct a single waveform.
Sin(x)/x sampling should be used
when the time base is relatively
slow or if single shot events need to
be captured.
Equivalent-
time sampling
Sampled data is accumulated a
number of times to reconstruct a
single waveform. This increases the
sampling rate, but can only be used
for repetitive signals. This mode is
usually used when the time base is
too fast for real-time sampling.
Panel Operation
1. Press the Acquire key.
Acquire
2. Press the ET/sin(x)/x key on the
bottom menu to toggle between
equivalent time sampling (ET) and
sin(x)/x interpolation.