Trimble RES 720 and ICM 720 GNSS and Timing Modules

Trimble has built on the legendary performance of the ICM SMT 360™ Multi-GNSS Timing Module and the RES SMT 360™ Multi-GNSS Timing Module.

Trimble’s RES 720 and ICM 720 modules are dual band (L1 and L5) multi-constellations GNSS timing receiver that provides single RF input for all GNSS bands to simplify host circuitry. Powered by Trimble’s Smart GNSS Assurance™ technology, the timing module offers protection against jamming and hacking of signals with automatic fallback to available GNSS signals (L1 to L5). These capabilities and highly accurate timing service provide operators with the ability to meet stringent timing requirements of critical infrastructure while guarding network synchronization against attacks from hackers. Infrastructure equipment suppliers & solutions providers will benefit by integrating highly accurate clock services to their devices & solutions while enabling secured resilient timing solutions for critical infrastructure.

RES SMT 360 vs RES 720 Secure Dual Band GNSS Timing Module

Review and buy the RES 720 Secure Dual Band GNSS Timing Module Only.

Review and buy the RES 720 Secure Dual Band GNSS Timing Module on Carrier Board

There are 2 key differences between the 360 and the 720 as follows:

  1. The 360 is single band (L1) and the 720 is dual band (L1 & L5).
  2. The 360 supports 15 nanosecond (1 Sigma) accuracy and the 720 supports 5 nanosecond (1Sigma) accuracy.

ICM SMT 360 vs ICM 720

See the chart below for a comparison of the ICM SMT 360™ Multi-GNSS Timing Module and the ICM 720™ Secure Dual Band Timing Module.

There are 3 key differences between the ICM SMT 360 and the ICM 720 as follows:

  1. The 360 is single band (L1) and the 720 is dual band (L1 & L5).
  2. The 360 supports 15 nanosecond (1 Sigma) accuracy and the 720 supports 5 nanosecond (1Sigma) accuracy.
  3. The 360 supports frequency outputs of 1PPS / PP2S while the 720 supports 1PPS/PP2S & 10 MHz

Benefits of dual frequency GNSS and L5 signal

What bands to GPS and Galileo (GNSS) Systems use?

GNSS systems such as GPS and Galileo transmit their signal in three distinct bands as follows:

  • GPS bands include L1, L2 and L5
    • L1 is an upper band and
    • L2 and L5 are lower bands
  • Galileo bands include U1 E5 and E6

What frequency do GPS Bands Use?

GPS L1 signal transmits at 1,575.42 megahertz frequency and is for civilian use.

GPS L2 signal transmits at 1,227.6 megahertz frequency and is dedicated to military use.

GPS L5 signal transmits at 1,176.45 megahertz frequency

 

What are C/A codes and Y Codes?

C/A code and Y codes are binary codes of one and zeros that changes frequently. C/A code changes 1.023 millions times a second whereas Y code changes 10.23 million times a second and does not repeat itself resulting a unique sequence of 6.18 trillion one and zeros per week per satellite.

What codes do the GPS Bands use?

L1 signal has two distinct codes. C/A code and Y code. C/A code is for civilian use and Y code is for military use

L2 has y code and that's for military use only.

C/A code in L1 signal is unencrypted. Whereas Y code present in L1 and L2 signal is encrypted.

Due to encryption it is nearly impossible to hack L2 and L1 signal with Y code for military purposes. Whereas L1 with ca code is subject to jamming and spoofing.

What is the GPS L5 Code?

A new civilian signal is introduced by block 2f series of GPS satellites. This new signal is known as L5.

L5 is designed to meet safety of live transportation and other high performance application needs. With the dual band of L1 and L5, a GNSS receiver provides better accuracy and greater performance. Additional benefits include:

  • L5 is a failover in case of L1 signal is jammed or spoofed. The receiver can fall back to L5 signal and L5 signal is difficult to jam or spoof. 
  • The GNSS receiver can also provide better ionospheric correction using dual band of L1 and L5.
  • Better immunity against interference. 
  • Better multipath mitigation.

Trimble provide a unique solution for dual band genesis receiver. The RST SMT 720 dual band receiver is ideally suitable for:

  • smart grid telecom networks
  • enterprise 5g
  • industrial network
  • autonomous vehicle
  • railway networks
  • air traffic control
  • broadcast networks
  • satcom calibration services
  • financial and data center networks.

Trimble's RES 720 provides resilient timing capabilities secure boot with tamper-proof capability anti-jamming and anti-spoofing multipath mitigation and all the benefit of L5 stronger and protected signal.

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