User interface v1.7.2

  • Additional information in a Tooltip for the current Pulse Streamer in MainWindow

  • Avoid duplicated devices with fallback IP detected via network scan

  • Debug mode for User Interface selectable in the start menu to enable logging

  • Fixed thread-safe logging

  • Fixed correct handling and reporting issues that arise while establishing a connection with the Pulse Streamer device

Matlab client v1.7.1

  • Fixed inconsistency between ClockSource enumeration naming and documentation. The change is backward-compatible


Firmware update v1.7.2

This firmware brings updates of third-party components such as Linux kernel etc.

  • Increased upload performance

User interface v1.7.0

  • Fixed a rare bug that made Pulse Streamer Application fail when discovering devices

  • Fixed a rare bug that made Pulse Streamer Application fail when establishing a connection

Python v1.7.0 & Matlab v1.7.0 & LabView v1.7.0

  • Support firmware v1.7.x


User interface v1.6.4

  • Added optional logging support

  • In case of failure, Pulse Streamer Application sends an error message to Swabian Instruments

  • Fixed bug in loading arbitrary data from CSV-file


Python Client update v1.6.2

  • Fixed a bug that connection fails due to the post-release segment of Python package v1.6.1.post1


User interface v1.6.3

  • Fixed a bug that Pulse Streamer Application fails to connect without an internet connection.


User interface v1.6.2

  • Pulse Streamer Application shows proper messages in the case of an error and will controllably shut down.

  • Package and .NET Framework update

Python Client v1.6.1

  • Fixed a bug in the sequence creation process that, under some conditions, resulted in missing pulses of a sequence with pulses with a maximum duration value of a 32 Bit word.

  • Updated package dependency of package protobuf

  • Changed import of module matplotlib to optional


Matlab Client update v1.6.2

  • Fixed a bug that, under some conditions, resulted in fixed pulse duration of ~4.2 s when the requested pulse duration was longer than ~2.1 s.


Firmware update v1.6.3

  • Support hardware revision v3.3


User interface v1.6.1

  • Pulse Streamer Application handles an incorrect setting of sequence parameters with warning


Firmware update v1.6.2

This update overcomes the recommended maximum limit of the retrigger frequency and brings automatic check and repair of sd-card partitions during bootup.

  • No limitation of the trigger frequency except a fix retrigger dead-time (<50 ns)

  • solved: Very rare boot failure due to sd-card partition damages automatically handled by fsck-tools during bootup

  • solved: A sporadic case of missing firmware/hardware version information in Pulse Streamer discovery server information

  • solved: Incorrect handling of empty sequences and n_runs=0 in v1.6.0 (internal release only)


Python v1.6.0

  • Increased performance of sequence generation

  • solved: zoom-in/panning within the sequence plot window

Matlab v1.6.1 & LabView v1.6.1

  • Support firmware v1.6.2


Firmware update v1.5.2

  • solved: Server-side JSON-RPC request-id handling

This release resolves the packet dependency (tinyrpc<=1.1.0) of the Python client


Client update v1.5.2


  • Fix packet version dependency: tinyrpc <=1.1.0 for Pulse Streamer 8/2 firmware <=1.5.1


User interface v1.5.3

  • solved: Correct firmware v1.0.x identification via Pulse Streamer Application


User interface v1.5.2

  • solved: Firmware v0.9 detection via Pulse Streamer Application

  • solved: Detection of non-licensed devices via Pulse Streamer Application


Firmware update v1.5.1

  • solved: extraordinarily long pulse on analog channels of few devices during bootup with hardware version 3.1 and firmware version v1.5.0

User interface v1.5.1

  • solved: Pulse Streamer Application crashes when trying to update the firmware without an internet connection available

  • Firmware update can also be performed on a manually downloaded local updater file

  • Pulse Streamer Application brings the opportunity to reconnect to different devices without restarting the application.


Firmware/Client update v1.5.0

This update brings an improved Pulse Streamer Application (GUI).

User interface

  • Pulse Streamer Application makes use of the full API extensions since version v1.0.2

  • Pulse Streamer Application makes use of the device discovery functionality

  • Pulse Streamer Application provides functionality for network configuration

  • Pulse Streamer Application performs firmware update process


Firmware/Client update v1.4.0

This update brings some functionality as output port enabling after power-cycling or automatic hardware version detection for the new hardware version v3.1 of the Pulse Streamer 8/2.

  • API has been supplemented by the methods: getHardwareVersion(), setSquareWave125MHz()

  • New trigger input stage leads to a typical TriggerToData of 65 ns (hardware version 3.1) respectively 60 ns (hardware version <= 2.3)


Bug-fix in LabView client

  • Internal sequence data for binary protocol uses little-endian encoding compared to big-endian of the JSON-RPC. This resulted in incorrect signal generation with binary protocol enabled firmware versions.

In order to fix the problem, you have to update the LabView client to the latest version.


Firmware/Client update v1.3.0

This update brings the opportunity to calibrate the analog outputs to increase its accuracy. Devices shipped with firmware version v1.3.0 or later come with calibrated outputs. Devices which has been shipped with a previous firmware version can manually be calibrated by the user with a dedicated method.

  • API has been supplemented by the methods: setAnalogCalibration(), getAnalogCalibration()

  • solved: sequences with sequence steps longer than ~0.5 µs and a number of sequence steps near to the maximum limit could raise std::bad_alloc()


Firmware/Client update v1.2.0

This update brings new device discovery functionality that greatly simplifies finding and connecting to the Pulse Streamer. Moreover, new getter methods are added to form a more complete set of functions that allows you to set and query the device state. Existing functionality has also received an upgrade in performance. Now sequence upload happens 2x faster thanks to a new binary communication protocol that works along the JSON-RPC.

  • new network device discovery functionality, findPulseStreamers()

  • sequence upload performance increased by factor two (requires both firmware and client interface update)

  • API has been supplemented by the methods: setHostname(), getHostname(), getTriggerStart(), getTriggerRearm(), getClock()

  • recommended maximum external retrigger frequency increased to 1 kHz

  • minimum trigger pulse width reduced to < 2ns

  • TriggerToData increased to 64.5/65.5 ns (mean value, rms jitter 2.3 ns)

  • unified version numbers for the Pulse Streamer 8/2 firmware and the client interfaces that now share the first two numerals


Firmware update v1.0.3

  • solved: at rare intervals occurring server crashes

  • solved: channel analog0 shows increased jitter (observed only on very few devices)

  • solved: extremely rarely missed internal trigger (sequence-dependent)


Client update v1.1.2


  • Bug-fix in the PulseStreamer.debug.PulseStreamer_RPCLogger class.

  • PulseStreamer_RPCLogger class now stores log-file snapshots on RPC errors.


Clients update v1.1.1

  • Python: corrected overflow error for sequence durations above 4 seconds on some systems.

  • Python client is now available at You can now install it with pip install pulsestreamer.

  • Matlab: minor code cleanup.


Client API update v1.1.0

This update brings homogenized API for PulseStreamer clients in all supported languages. From now on, the signatures of all currently present functions and methods are frozen and will remain stable over the future minor updates and releases. In the future, we plan to add any new functionality in a backward-compatible way with no user code modifications required.

  • The API was slightly redesigned and homogenized in all supported languages.

  • The use of high-level clients is now a recommended way of programming and streaming the pulse sequences with the Pulse Streamer.

  • New methods PulseStreamer.createSequence and PulseStreamer.createOutputState that create hardware specific Sequence and OutputState objects.

  • New method PulseStreamer.getFPGAID.

  • New OutputState class for defining the state of Pulse Streamer outputs in some methods.

  • New OutputState.ZERO constant.

  • New named constant PulseStreamer.REPEAT_INFINITELY = -1 for infinite sequence repetition.

  • Sequence object now applies padding to the pattern data and previous levels on concatenation.

  • Renamed enum TriggerMode to TriggerRearm, also renamed enumeration values.

  • Renamed enumeration values in enums TriggerStart.

  • Modified signature of the PulseStreamer.getSerial() method, which now has no input parameter and always returns hardware serial number.


  • The client code is now distributed as a packaged Matlab Toolbox.

  • The PulseStreamer client is placed into its own namespace PulseStreamer in order to prevent possible collisions in function names. You can use import PulseStreamer.* to shorten the class names.

  • Moved compatibility functions for FW v0.9 to PulseStreamer.compat sub-package.

  • Sequence.setDigital and Sequence.setAnalog allows for overwriting mapped pulse patterns even after concatenation or repetition.

  • method now supports Sequence object and [{duration,chan_list,a0,a1}; {...}] cell array as input.

  • Functionality of PSSequenceBuilder and PSSequence classes is now combined and moved to Sequence class.

  • Renamed PSTriggerMode to TriggerRearm.

  • Renamed PSTriggerStart to TriggerStart.

  • Renamed PSSequence to Sequence.

  • Removed PSSerial enum.

  • Sequence.plot method plots the sequence data exactly as defined by the user without resampling to common time.

  • Sequence is completely decoupled from PulseStreamer class. Use PulseStreamer.createSequence() method to create a Sequence object that does early channel number validation.

  • Helper classes like PulseStreamer_Dummy and PulseStreamer_RPCLogger located in a sub-package PulseStreamer.debug.

  • Solved problem with multiple timers created on repeated script runs with long sequences. Only one timer can exist for a given device.


  • Pulse Streamer client code for LabView is now distributed as a VIPM package.

  • Functionality of SequenceBuilder and Sequence classes is now combined into Sequence class.

  • Added, which plots the pulse patterns according to user input with no resampling to common time.

  • method is a polymorphic VI with wrappers to handle implementation VIs with dynamic inputs.

  • supports Sequence object, old Pulse array, and RLEdata cluster as inputs.

  • Renamed Digital Pattern.lvclass to PulsePattern.lvclass.

  • Renamed Analog Pattern.lvclass to AnalogPattern.lvclass.


  • PulseStreamer client is distributed as wheel package pulsestreamer.

  • PulseStreamer now uses standard tinyrpc package instead of previously used customized version Use pip install tinyrpc to install the package, if missing.

  • Some changes in parameter names. Please see Programming interface.

  • New concatenate, repeat and `plot methods are added to Sequence class.

  • PulseStreamer client is organized into a python module with a cleaner layout.

  • method accepts Sequence object as input parameter directly.


Firmware update v1.0.2

  • solved: occasionally missed external trigger


Firmware update v1.0.1

  • API has been supplemented by method rearm() and forceFinal()

  • second permanent IP added

  • network configuration file on user partition -> static IP can be configured via RPCs

  • login password changed



  • adapted to new API

  • class Sequence added as handy sequence-builder

  • channel_map {‘ch0’:0, ‘ch1’:1…} no longer supported - use channel_list e.g. [0,1,3,7]


  • adapted to new API

  • large changes in the way sequences are created and manipulated

  • new classes for sequence creation: PSSequenceBuilder and PSSequence

  • classes P and PH are modified and labeled as deprecated

  • added compatibility function convert_PPH_to_PSSequence that converts sequences created with P or PH objects into PSSequence

  • added examples that show how to migrate old code to version 1.0

  • code examples completely reworked to reflect the new way of building sequences


  • adapted to new API

  • large changes in the way sequences are created and manipulated

  • new classes for sequence creation: SequenceBuilder and Sequence

  • client code is now contained in a LabView library.

  • slightly modified and renamed classes for signal pattern creation

  • code examples completely reworked to reflect the new way of building sequences


firmware update v1.0

  • underflows do not occur any more -> getUnderflow() returns 0 always

  • API changes (see API-migration-doc for details)

  • substantial changes in the embedded Linux-operation system

  • no network configuration file - only DHCP and fallback IP available


  • Python, Matlab and LabVIEW adapted to new API


user interface

  • added a GUI to determine the IP address of the Pulse Streamer and to create simple pulses (beta release)


  • improved Python client



  • added LabVIEW client

  • improved Matlab client

  • improved Python client


  • added ‘Getting Started’ section


Matlab client

  • added links to the Matlab client examples


static sequence beta 0.9

  • enums in RPCs

  • API name changes

  • rising and falling edges on external trigger


provide network configuration

  • added section on network configuration


static sequence alpha

  • initial, final, underflow states

  • software start

  • external trigger

  • rerun sequence

  • separate underflow flags for digital and analog

  • optional values in jRPC


static sequence alpha