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Have a question about your KVH product? No problem – just use the tools below to find information and troubleshooting tips for your product 24 hours a day, 7 days a week.

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Strong magnetic fields have the ability to cause apparent drift in the gyro bias. This is due to the Faraday effect on the laser light in the sensing coil resulting in non-reciprocal light paths. While this effect can be observed in gyros designed for precision inertial navigation systems (drift rates of less than 1 degree per hour), and can be mitigated by the use of mu-metal shielding, there have been no reported problems with KVH FOGs. If your application results in mounting a FOG near a very strong magnetic field (>50 gauss), a practical test to determine sensitivity is suggested.


A rate gyro does not output accumulated angle. Instead, it outputs rate of change of angle. In most KVH FOGs, the users can change the output format as desired; rate integrated angle, or incremental angle.


At this time, the DSP-1750 only supports asynchronous outputs. However, our compact DSP-3000, DSP-3100, and DSP-3400 FOGs support synchronous outputs.


The super-compact commercial FOG offers revolutionary performance levels for a unit its size, including:

• input rates 5x faster than KVH’s original DSP-1500 FOG
• angle random walk (ARW) 5x better than the DSP-3000 series
• bias stability 8x better than the DSP-3000 series, a level of performance previously only available in larger, more expensive closed-loop fiber optic gyros and ring laser gyros

For complete details, download the detailed datasheet from the commercial or military/government product pages.


Yes, the DSP-1750 is a commercial off the shelf (COTS) product. Please note, however, that the DSP-1750 High variant, which offers input rates as fast as 1000˚/second, is subject to the U.S. Department of Commerce Export Administration Act of 1979.

The Integrated CommBox Modem (ICM) is the streamlined all-in-one belowdecks unit that drives the TracPhone V7-HTS. It features a browser-based user interface and a convenient iPhone® app for system status, updates, and support. Replacing a full rack of components required for competitors’ systems, the 2U-high ICM contains:
  • IP-enabled antenna control unit
  • CommBox™ Network Manager
  • High-throughput modem
  • Voice over IP (VoIP) adapter
  • Built-in Wi-Fi and Ethernet switch
  • Content storage and access for IP-MobileCast™ and Videotel™ training content
  • Support for over-the-air software updates for the ICM and antenna unit

KVH’s new E•Core ThinFiber is the world’s smallest D-shaped optical fiber - only 170 microns, a 30% reduction from our original E•Core polarization maintaining fiber. It’s an engineering breakthrough that enables the DSP-1750 to deliver a unique combination of both extremely low noise and very high bandwidth.


KVH’s DSP-1750 is a high-performance, super-compact fiber optic gyro (FOG). It is available in both Standard (input rate = 490˚/second) and High (1,000˚/second) variants.* Designed for maximum versatility, it offers both single- and dual-axis configuration as well as optional magnetic shielding.
Its innovative two-piece design – an optical sensor 1.7" in diameter connected to power and processing electronics via a robust interlocking tether – makes the DSP-1750 easy to integrate into platforms where space and payload weight are at a premium while improving accuracy at the same time.

For complete details, download the detailed datasheet from the commercial or military/government product pages.

* Please Note: The DSP-1750 High is controlled by the Export Administration Act of 1979.

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