FireSpy® 3811

The Triple Series USB/Ethernet hosted FireSpy3811 provides three FireSpy bus analyzer engines in one compact package. Designed to meet the requirements of AS5643 based triple-redundant bus architectures, the FireSpy3811 allows to be connected to three separate IEEE-1394 buses while connecting to three synchronized analysis engines. Based on our 2nd generation hardware platform, the FireSpy3811 contains 1GB internal memory and a powerful processor to provide the resources needed to service all three buses. The USB2.0 and Ethernet host interfaces allow capture data and all other communication with the FireSpy to be 10 to 40 times faster than our Basic Series products.

The FireSpy3811 brings out six ports, two from each analyzer engine, to IEEE-1394 Bilingual 9-pin connectors. The AS5643/1 active transformer coupled ports can only operate at S400 and S800 Beta data rates, while the bilingual ports support S100, S200 and S400 legacy connections and S400 and S800 Beta connections.

The FireSpy3811 utilizes the same FireDiagnostics Suite™ software as all other FireSpy bus analyzers however, all bus analyzers are presented in a single GUI. FireDiagnostics Suite™ supports Windows™ Operating Systems. Additionally, the FireDiagnostics Suite API allows you to build your own control software using C/C++ or LabVIEW™.

The seamless integration of the AS5643 protocol makes the FireSpy3811 the preferred tool for many Aerospace & Defense development tasks. DapTechnology has made considerable efforts to fully support the SAE AS5643 protocol in all major functional areas of the FireSpy3811 and continuously updates the analyzers' functionality according to implementation requirements and ongoing standardization efforts.

Life Cycle Status

End of Sales     Aug 2020
not recommended for new designs
replaced by TBA

Key features

  • IEEE-1394-2008 and AS5643 compliant
  • Supports the follwing data transfer rates: two (2) Ports (per bus): S100-S400 Legacy and S400 - S800 Beta
  • Host connection to PC via USB 2.0 or Ethernet (10/100 BaseT) interface
  • Standalone operation using internal flash memory option
  • On-board 400 MHz RISC processor and programmable logic
  • 1GB internal memory
  • GUI and API for WindowsTM Operating Systems
  • 3 analyzer engines in one product
  • Enhanced Scriptor functionality for real-time monitoring and asynchronous packet generation
  • Powerful software provides:
    • Monitor
    • Recorder
    • Commander
    • Scriptor (programmable in C-like language)
    • Generator
    • Filter and Trigger
    • Mil1394 Signal Monitor
  • Support for AS5643, AV/C, SBP2, IP1394 and IIDC protocols
  • Internal SelfTest
  • C/C++ API with LabVIEWTM Wrappers

Block Diagram

FireSpy® 3811 specifications

Dimensions: 125 mm x 48 mm x 209 mm
Weight: 800 g
Power Requirements: 12V, 10 Watt maximum
Regulatory compliance: FCC Class A , CE

USB-connector for host-computer

6 IEEE-1394 connectors (bilingual)

BNC-connector for external trigger-input signal




Green LEDs for:
    USB connection, Power on, Ready, Trigger

Red LEDs for:
     Record, Active

Switches: Tumble switch for Power On/Off
Part Number: FS3811 (FS3811AS5643 withAS5643 protocol)


HTS: 8471.90.0000


SW Add-on modules:





SBP2 protocol software package

IIDC protocol software package

AV/C protocol software package

IP1394 protocol software package

AS5643 protocol software pack

FireSpy® 3811 media files

Product Image(s)

Connectivity Example(s):

FireSpy® 3811 sales info

Package Contents

  • FireSpy3811
  • Switching AC/DC Power Supply (12V, 5A)
  • USB Cable
  • 3x Beta cables (CAFW99)

Delivery time

Lead time is based on special project terms. Please contact sales(at) for more detailed information.


Standard: 36 months, limited.


All products will be supported on a 24 hours response basis and free of charge for the first 24 months. For support questions please contact: sales(at)

Of course you can also call us during our office hours from 9:00 until 17:00 hours (GMT +1:00). Contact Info

Price Info / Quote Request

Please contact sales(at) for current pricing.

Country Distributor Phone URL
China BEIJING CESITEK CO., LTD. +86 10 84177715
Japan Nacelle Co. Ltd. +81-3-5921-5099
United States of America DapUSA, Inc +1 480 422 1551
South Korea Realtimewave Co. Ltd. +82-31-698-2980/2
all other countries Dap Technology B.V. +1-514-453-4111

Click here for a more detailed listing of our Sales Representations.

USA Representatives

For the U.S.A., we have as representatives:

Representative Territory Phone URL
Dap USA Office Arizona Entire United States of America +1 480 422 1551


To place an order for DapTechnology products, please print one of the following order forms and email it to the corresponding email address:

Dap USA, Inc.
Download order form

Or contact us by phone: +1 480 422 1551

Rest of the world:
Dap Technology B.V.
Download order form

Or contact us by phone: +1 480 422 1551

FireDiagnostics Suite

The FireDiagnostics Suite is the most comprehensive collection of 1394 analysis, simulation and interface tools for a wide range of applications. Apart from well established and hardware assisted analyzer tools like Monitor, Recorder, Generator, Commander, Scriptor and Mil1394 Signal Monitor, the suite also offers a set of software tools designed to allow the integration of the FireSpy products in a wide variety of testing applications, as well as extend customization of its functionality beyond the baseline feature set provided by DapTechnology.

FireSuite API

The foundation for all software tools included in the FireDiagnostics Suite is formed by the Application Programming Interface (API). With its interfaces for a wide range of development environments using C/C++ or LabVIEWTM on WindowsTM Operating Systems, the application of FireSpy analyzers is extremely flexible. With its feature-rich function library, all hardware assisted analyzer tools like the Monitor and Recorder can be controlled as well as more low-level 1394 bus functions.

Protocol Support

A cornerstone of FireDiagnostics Suite functionality is the unparalleled level of support for high-level protocols. With IEEE-1394 being the basic data exchange mechanism application specific protocols for the PC & storage environment (IPv4, SBP2), consumer electronics (AV/C, HAVi), Automotive Infotainment (AMI-C), Industrial Imaging (IIDC) have been successfully deployed. In recent years AS5643 has been adopted for use within Aerospace and Defense and largely fueled the continuous growth of IEEE-1394.