Skip to content
Safran Logo
  • Applications

    • Defense
    • Ground Forces Operations
    • Airborne Operations
    • Naval Operations
    • Aerospace
    • Space
    • General Aviation
    • Commercial Aviation
    • Rotary Aviation
    • Critical Infrastructure
    • Finance
    • Automotive
    • Science & Metrology
    • Public Safety
    • Data Centers
    • Railways
    Explore Solutions Online Store Get a Quote
  • Solutions

    • Timing and Synchronization
    • SecureSync® Time and Frequency Reference System
    • NetClock Public Safety Master Clock
    • NetClock GPS NTP Server
    • White Rabbit Z16
    • White Rabbit ZEN TP-FL
    • White Rabbit Switch – Low Jitter
    • VersaSync
    • VersaPNT
    • Simulation
    • Skydel GNSS Simulation Software
    • GSG 5/6
    • Skydel GSG-7
    • Skydel GSG-8
    • Skydel BroadSim
    • BroadSim Solo
    • Skydel Anechoic
    • Skydel Wavefront
    • Atomic Clocks and Oscillators
    • mRO-50
    • mRO-50 Ruggedized
    • LPFRS Rubidium Oscillator
    • StarLPRO-1500 Rubidium Oscillator
    • SRO-5680 Disciplined Rubidium Oscillator
    • LNRClok-1500 Rubidium Clock
    • MiniRAFS Rb Atomic Frequency Standard
    • iMaser 3000
    • Interference Detection and Mitigation
    • BroadSense
    • BroadShield
    • SecureSync IDM Suite
    • VersaSync IDM Suite
    • 8230AJ GPS/GNSS Anti-Jam Outdoor Antenna
    • GPSdome Anti-Jammer
    • STL Option
    • Inertial Navigation Systems
    • Epsilon™
    • SkyNaute™
    • SpaceNaute
    • BlueNaute®
    • Geonyx™
    • Black-Onyx™ INS
    • Argonyx™ INS
    • Sigma 95
    • Accelerometers
    • MS1000 Tactical Grade MEMS Accelerometer
    • MS1000L Capacitive Accelerometer
    • MS1000T High Temperature Accelerometer
    • TS1000T High Temperature Inclinometer
    • VS1000 Vibration Sensor
    • SI1000 Seismic Sensor
    • IMUs and Gyroscopes
    • STIM300 Inertial Measurement Unit
    • STIM380H Inertial Measurement Unit
    • STIM320 Inertial Measurement Unit
    • STIM318 Inertial Measurement Unit
    • STIM377H Inertial Measurement Unit
    • STIM277H Gyroscope
    • STIM202 Gyroscope
    • STIM210 Gyroscope
    • Emergency Locator Beacons
    • Ultima-DT
    • Ultima-S
    • Kannad Integra ER
    • Kannad Integra ELT
    • SARBE G2R Evo
    • SARBE 6-406G Evo
    • SARBE G2R ELT Evo
    • SecureFind
    Explore all Solutions Online Store Get a Quote
  • Learn

    • Content
    • News
    • Videos
    • Events
    • Case Studies
    • Insights
    • Use Cases
    • White Papers
    • R&D Projects
    • Community
    • Academic Partnership Program
    • Skydel Certification Courses
    • Skydel Forum
    All Resources Contact Us
  • Support

    • Support Hubs
    • Skydel
    • GSG 5/6
    • White Rabbit
    • SecureSync 1200
    • SecureSync 2400
    • Kannad ELT
    • Information
    • Quality
    • Product Support Plans
    • Warranty Information
    • Support Knowledge Base
    Support Home Getting Started
  • About

    • Navigation & Timing Companies
    • Safran Trusted 4D
    • Orolia Defense & Security
    • Safran Electronics & Defense
    • Syrlinks
    • Safran Sensing Technologies
    • About the Portfolio
    • What is Navigation and Timing?
    • Orolia acquisition information
    • Careers
    • Safran Trusted 4D Careers
    • All Safran Careers
    Safran Group Contact Us
Login Login
    • Defense
    • Ground Forces Operations
    • Airborne Operations
    • Naval Operations
    • Aerospace
    • Space
    • General Aviation
    • Commercial Aviation
    • Rotary Aviation
    • Critical Infrastructure
    • Finance
    • Automotive
    • Science & Metrology
    • Public Safety
    • Data Centers
    • Railways
    • Timing and Synchronization
    • SecureSync® Time and Frequency Reference System
    • NetClock Public Safety Master Clock
    • NetClock GPS NTP Server
    • White Rabbit Z16
    • White Rabbit ZEN TP-FL
    • White Rabbit Switch – Low Jitter
    • VersaSync
    • VersaPNT
    • Simulation
    • Skydel GNSS Simulation Software
    • GSG 5/6
    • Skydel GSG-7
    • Skydel GSG-8
    • Skydel BroadSim
    • BroadSim Solo
    • Skydel Anechoic
    • Skydel Wavefront
    • Atomic Clocks and Oscillators
    • mRO-50
    • mRO-50 Ruggedized
    • LPFRS Rubidium Oscillator
    • StarLPRO-1500 Rubidium Oscillator
    • SRO-5680 Disciplined Rubidium Oscillator
    • LNRClok-1500 Rubidium Clock
    • MiniRAFS Rb Atomic Frequency Standard
    • iMaser 3000
    • Interference Detection and Mitigation
    • BroadSense
    • BroadShield
    • SecureSync IDM Suite
    • VersaSync IDM Suite
    • 8230AJ GPS/GNSS Anti-Jam Outdoor Antenna
    • GPSdome Anti-Jammer
    • STL Option
    • Inertial Navigation Systems
    • Epsilon™
    • SkyNaute™
    • SpaceNaute
    • BlueNaute®
    • Geonyx™
    • Black-Onyx™ INS
    • Argonyx™ INS
    • Sigma 95
    • Accelerometers
    • MS1000 Tactical Grade MEMS Accelerometer
    • MS1000L Capacitive Accelerometer
    • MS1000T High Temperature Accelerometer
    • TS1000T High Temperature Inclinometer
    • VS1000 Vibration Sensor
    • SI1000 Seismic Sensor
    • IMUs and Gyroscopes
    • STIM300 Inertial Measurement Unit
    • STIM380H Inertial Measurement Unit
    • STIM320 Inertial Measurement Unit
    • STIM318 Inertial Measurement Unit
    • STIM377H Inertial Measurement Unit
    • STIM277H Gyroscope
    • STIM202 Gyroscope
    • STIM210 Gyroscope
    • Emergency Locator Beacons
    • Ultima-DT
    • Ultima-S
    • Kannad Integra ER
    • Kannad Integra ELT
    • SARBE G2R Evo
    • SARBE 6-406G Evo
    • SARBE G2R ELT Evo
    • SecureFind
    • Content
    • News
    • Videos
    • Events
    • Case Studies
    • Insights
    • Use Cases
    • White Papers
    • R&D Projects
    • Community
    • Academic Partnership Program
    • Skydel Certification Courses
    • Skydel Forum
    • Support Hubs
    • Skydel
    • GSG 5/6
    • White Rabbit
    • SecureSync 1200
    • SecureSync 2400
    • Kannad ELT
    • Information
    • Quality
    • Product Support Plans
    • Warranty Information
    • Support Knowledge Base
    • Navigation & Timing Companies
    • Safran Trusted 4D
    • Orolia Defense & Security
    • Safran Electronics & Defense
    • Syrlinks
    • Safran Sensing Technologies
    • About the Portfolio
    • What is Navigation and Timing?
    • Orolia acquisition information
    • Careers
    • Safran Trusted 4D Careers
    • All Safran Careers
Request Quote
Login Login

STIM

Support Hub

FAQ
Support Plans Warranty Information Log a Ticket Leave Feedback
View Map
Application Notes

Product Documents

  • Helium Sensitivity of Non-Hermetic STIM Products

    Learn More

  • STIM300 Centre of Mass Drawing

    Learn More

  • STIM300 Product Qualification Program

    Learn More

  • App Note: Timing Details Between Sampling and Datagram Transmission

    Learn More

  • App Note: Considering Sample Rates and Filter Settings

    Learn More

  • COTS for Space – Radiation Characterization of Gyro and IMU for LEO Operations

    Learn More

  • STIM Historical Production Data

    Learn More

  • High-G Testing of an Existing Tactical Grade Gyro Design

    Learn More

  • Technical Note: STIM300 Random Vibration “High Performance Aircraft”

    Learn More

  • STIM300e – Extended Gyro Measurement Ranges

    Learn More

  • STIM 318e – Extended Gyro Measurement Ranges

    Learn More

  • TVAC Testing of STIM377H

    Learn More

  • Radiation Testing of STIM300 and STIM 210

    Learn More

  • Decoding of STIM Datagram, Programming Example

    Learn More

  • 32 Byte Calculation of CRC Checksum, Programming Example

    Learn More

  • 8 Byte Calculation of CRC Checksum, Programming Example

    Learn More

  • STIM Housing Material Thickness Measurements

    Learn More

FAQ

FAQ

  • What is the principle of operation for gyros?

    We manufacture MEMS vibratory gyros based on the Coriolis effect. Below is a model of the Butterfly Gyro with two masses which are driven (excited) to oscillate at a resonance frequency close to 10 kHz. When a rotation of the gyro around the sensitive axis is applied, the two masses will deflect in a direction different to the oscillation. This is called the detection motion, which ultimately gives the angular rate sensed by the gyro.

  • Are the STIM products available without housing?

    No, the STIM gyros are mounted to the housings before calibration which is necessary for achieving the high performance they have. Housings cannot be modified.

  • Can STIM products be repaired?

    We can in some cases perform FW updates. The STIM products are not designed for mechanical repair.

  • Is a Certificate of Compliance (CoC) available for the STIM products?

    Our standard CoC is available with each shipment for customers that require this.

  • Is it possible to update STIM micro controller firmware?

    The STIM firmware can only be updated by our staff at our facilities.

  • Are the STIM products continuously temperature compensated?

    Yes, the gyros (as well as accelerometers and inclinometers where available) use internal temperature measurements to continuously compensate the output signal.

  • What is the “Time to valid data” for STIM products?

    This is the time needed from power-on or reset to clearing of the start-up bit (bit 6 in the status byte). During this period the output data should be regarded as non-valid. Details for each product is given by the product specifications.

  • What are the functional differences from STIM202 to other STIM gyro products?

    STIM202 is designed with internal mechanical dampers for operation in environments with shocks, e.g. direct mounting on remote weapon stations. STIM210 does not have mechanical dampers and also has twice as high data output rate compared to STIM202.

  • How is bias instability measured?

    Bias instability is measured by Allan Variance method, according to IEEE std. 952.

    Test is performed at room temperature (~25°C)

    Power is applied 2 hours prior to data collection

    Data are collected for 18 hours

    The root Allan variance is plotted and the bias instability is defined as the lowest point of the curve.

  • How is Angle Random Walk (ARW) defined?

    ARW is the white (random) noise of the sensor and is read from the root Allan variance curve at 1 second averaging time.

  • What type of low pass filters are used for STIM?

    STIM uses cascaded integrator-comb (CIC) low pass filters with linear phase response. Filter bandwidth (-3dB) is user configurable and can be set to 16Hz, 33Hz, 66Hz, 131Hz or 262Hz.

  • What is group delay?

    Group delay is the processing time of the signal through the low pass filter. The delay depends on filter bandwidth.

  • What is the TOV signal of STIM products?

    Time Of Validity (TOV) is for synchronization of datagram transmission with external events. TOV falling edge occurs synchronous to the sample rate. Raising edge occurs after last bit of datagram.

  • Can the STIM products output roll pitch and yaw in degrees?

    No, STIM does not operate as a standalone AHRS.

    The gyros can output angular rate, or integrated and incremental angle.

    The accelerometers can output acceleration, or integrated and incremental velocity.

  • What is the definition of Integrated angle?

    The integrated angle output is the angle since start-up or reset. The integrated angle is limited to ±4°, at which points a wrap-around occur.

  • What is the definition of Incremental angle?

    Incremental angle is the change in angle since the previous sample.

    E.g.: (100 °/s) / (125 sample/s) = 0.8°.

  • What is the accuracy of a position change measurement using STIM IMUs?

    STIM IMUs does not output position, but is used in several positioning systems.

    One of the leading GNSS/INS system builders obtain about 6 m horizontal position error after 60 seconds during a GNSS outage.

  • What is the resolution for the different accelerometer input ranges available for STIM300?

    2g: 0.5μg
    5g: 1.0μg
    10g: 1.9μg
    30g: 3.8μg
    80g: 15.3μg

  • STIM Evaluation kit: The indicator for “Data arriving from device” light is green but there is no output from the STIM.

    Verify that the bit rate settings of the computer serial port are in accordance with the STIM communication settings.

  • How to solve evaluation kit (EVK) error message “Unable to control supply voltage”?

    This error message occur when the EVK software don’t detect the startup datagrams. This happens when the STIM device is powered before the “Apply voltage” switch is flipped when connecting the STIM to the EVK SW.

    Disconnect the STIM and make sure the correct procedure is followed when connecting as described by the EVK user manual.

  • Do you have any example code for communicating with the STIM?

    We can help with examples e.g. for converting data bytes to angular rate measurements or how to calculate the cyclic redundancy check (CRC).

  • What is the CRC?

    The cyclic redundancy check (CRC) is a common way of making sure the data has been correctly transmitted – i.e. that the received data is identical to what was transmitted. The STIM calculates and output a check-number based on the contents of the transmitted data itself. The receiver will perform the same CRC calculation and compare to the received CRC to verify that the transmission was successful.

Support Ticket

Log Support Ticket

Are you a distributor or reseller?
Please list as many serial numbers as needed.
Please tell us whatever you think would be relevant so we can best respond to your service and product support request
Frequency of Failure(Required)
Reason for RMA(Required)
For RMA Return Requests
For RMA Return Requests
Video

Tutorials

Coming Soon.
Follow us
Safran Logo
  • Contact Us
  • Privacy Policy
  • Code of Conduct
  • FAQ
  • Cookie Policy
Login

Lost Your Password?
Safran
Register
Don't have an account? Register one!
Register an Account