keysight_dsox

EPICS PVAccess server for Keysight (Agilent) DSO-X oscilloscopes (may support other series). Server supports both USB and Ethernet connections.

This module connects to a scope via VISA/SCPI, publishes waveform and settings PVs, and exposes writable control PVs for acquisition and trigger configuration.

Features

• VISA connection to Keysight/Agilent DSO-X scopes
• PVAccess server using epicsdev
• Per-channel PVs for:
  • OnOff, Coupling, VoltsPerDiv, VoltOffset
  • Waveform, Mean, Peak2Peak, RMS
• Common scope PVs:
  • timePerDiv, tAxis, samplingRate, trigSource, trigSlope, trigMode, trigLevel
  • acqCount, lostTrigs, scopeIDN, instrCmdS/instrCmdR
• Triggered waveform acquisition with published time axis (tAxis)

Default VISA resource

USB0::2391::6052::MY51330356::0::INSTR
For Ethernet:
TCPIP::192.168.27.31::INSTR
or
TCPIP::192.168.27.31::SOCKET

Requirements

• Python 3.10+
• numpy
• pyvisa
• a VISA backend (typically pyvisa-py)
• epicsdev and its EPICS/PVA dependency stack (p4p)

Install and Run

pip install epicsdev_osc_keysight_dsox

python -m epicsdev_osc_keysight_dsox

Typical usage:

python -m epicsdev_osc_keysight_dsox -r "USB0::2391::6052::MY51330356::0::INSTR" -d keysight -i 0 -C 4 -v

This creates PVs with prefix <device><index>: (default: keysight0:).

Command-line options

• -r, --resource VISA resource string
• -d, --device device prefix base name
• -i, --index device index appended to prefix
• -C, --channels number of channels to expose
• -l, --list directory where generated PV list is saved
• -a, --autosave autosave control (optional argument)
• -c, --recall disable restoring PV values from autosave cache
• -p, --putlogPV PV name for put logging
• -v, --verbose increase verbosity (-vv for more)

Example PV names

With default prefix keysight0::

• keysight0:scopeIDN
• keysight0:trigState
• keysight0:tAxis
• keysight0:c01Waveform
• keysight0:c01VoltsPerDiv
• keysight0:c01VoltOffset
• keysight0:c01OnOff

Phoebus screen

A simple screen generator is included:

• Source: opi/generate_simplescope.py
• Output: opi/simplescope.bob

Generate with:

python opi/generate_simplescope.py --prefix 'keysight0:'

Notes

• On startup, the server reads selected scope settings and adopts them into PVs.
• Waveforms are acquired on trigger detection and published with channel statistics.
• If all channels are set Off, channel 1 is used as a fallback acquisition source.