:SYSTem:DEFault
Instrument:
N1010A
DCA-X
DCA-M
Meas. mode:
Scope
Eye
Jitter
TDR
Flex Apps:
FlexDCA
FlexRT
FlexPLL
Command Syntax
:SYSTem:DEFault
Description
Returns FlexDCA and any connected extended module (*RST common command.
If you are using FlexEye sessions, you should also begin your child processes with this command. The default settings include:
- Oscilloscope mode.
- Front Panel triggering
- Displays Channel A on the lowest numbered occupied slot for display. All other channel inputs turned off. For example if an N1045A module is installed in slot 3 and a DCA-M is installed in slot 6, Channel 3A will be the only displayed channel.
An autoscale is not performed.
Use of an *OPC? query to pause program execution while waiting for this command to execute.
| Feature | Setting |
|---|---|
| Mode of Operation | Oscilloscope Mode |
| Acquisition | |
| Run/Stop | Run |
| Smoothing | None |
| Number of Averages | 16 (range: 2 to 32,768) |
| Base Measurement Configuration | |
| Top-base Definition | Auto |
| Thresholds | 10%, 50%, 90% |
| Eye Boundary 1 | 40% for NRZ eyes (Range: 0—100%) |
| Eye Boundary 2 | 60% for NRZ eyes (Range: 0—100%) |
| Channels | |
| Display | Lowest numbered installed channel is on, all other channels are off |
| Bandwidth | Dependent on type of installed module |
| Scale | Dependent on type of installed module |
| Offset | 0V or 0W (Dependent on type of installed module) |
| Units | Volts (or Watts) (Dependent on type of installed module) |
| Display | |
| Persistence | Variable (Oscilloscope mode) Gray Scale (Eye/Mask mode) |
| Persistence Time | 300 ms, variable persistence (Range: 100 ms to 40s) |
| Grid | On |
| Grid Intensity | 100% (Range: 0 to 100) |
| Colors | Default color legend |
| UI Color Theme | not changed |
| Dialog Size | not changed |
| Dialog Opacity | not changed |
| Dialog Transparent Background | off |
| Mode Switch Animation | not changed |
| Connect Waveform Dots | Off |
| Histograms | |
| Mode | Off |
| Placement | Left |
| Window source | First available channel |
| Scale | Linear |
| Horizontal (Time Base) | |
| Scale | 20 ps/div 1 ns/div (86100C) |
| Delay from Trigger | 24 ns |
| Reference | Left |
| Units | Time |
| Jitter Mode Measurement Configuration | |
| Jitter Mode Graph | Histogram: Y Axis Linear Bathtub Scale: BER Layout: Quad |
| Jitter Mode Measurements | Units: Seconds Signal type: Auto Detect Results based on: Both Edges Sampling Level: 50% TJ Measurement BER: 1.0E-12 RJ Stabilization: off RJ Compensation: off |
| Jitter Mode Amplitude Measurements | Measurement Location: 50% Graphs based on: Both Edges One/Zero Level Definition: Average Units: Volts or Watts RIN Relative to: One Level RIN Normatilization: Decibel TI Measurement BER: 1.0E-12 RN Stabilization: off RN Compensation: off |
| Limit test | Off |
| Markers | Off |
| Mask Test Measurement Configuration | |
| Mask test | Off |
| Alignment Method | NRZ Eye |
| Alignment Timing | Once |
| Mask Scale Mode | X and Y |
| Y-Axis Mask Align Measurement Area | Eye Boundaries (Align to One, Zero Levels) |
| Trigger | |
| Source | Front Panel |
| Hysteresis | Normal |
| Slope | Rising Edge |
| Bandwidth | N1000A: Clock Trigger (50 MHz - 32 GHz) 86100D-ETR: Clock/Divided (3 GHz - 13 GHz) 86100D-STR: Filtered Edge (DC - 100 MHz) 86100C: Standard (DC - 3.2 GHz) |
| Waveform Memory | |
| Memory Display | All Off |
| Waveform Source | First available channel or Memory 1 |
| Waveform Signal Processing | Current function deleted |
Python Example
import visa # PyVISA library
rm = visa.ResourceManager()
flex=rm.open_resource('TCPIP0::localhost::hislip0,4880::INSTR')
flex.query(':SYSTem:DEFault;*OPC?')
flex.write(':SYSTem:GTLocal')
flex.close()