10.23 MHz Master Clock Generation Unit for Satellites

SKU: CMCU

Space Qualified Atomic Clock by Airbus (1 more product)

Note : Your request will be directed to Airbus.

CMCU Image

The CMCU from Airbus is a Space Qualified Atomic Clock with two frequency synthesizers that can select independently between two input 9.99-10.01 MHz frequency references. This unit has an output frequency range of 10.23 MHz and short-term residual frequency stability of 6.4 x10-14 (10 s). It has a setting range of ± 1 x 10-8 and a phase meter resolution of 3 ps. The clock generation unit has a phase noise of up to -154 dBc/Hz (100 kHz) and a spurious of -80 dBc. It has a 4 x 2 switch matrix with high isolation to prevent degradation of clock stability and a phase meter to monitor hot redundant against active clock. The clock unit supports MIL-STD-1553B or RS-422 interface for control and monitoring. It requires a power bus voltage of 26-48.5 V and has a power consumption of 21 W. The clock unit has a mass of 5.2 Kg and measures 270 x 216 x 137 mm. Its main application fields include navigation payloads (global or regional), high-performance communication systems, scientific applications, and GNSS overlay systems.

Product Specifications

Product Details

  • Part Number
    CMCU
  • Manufacturer
    Airbus
  • Description
    10.23 MHz Master Clock Generation Unit for Satellites

General Parameters

  • Space Standard
    MIL-STD-1553B
  • Mass
    5.2 Kg
  • Input Frequency
    9.99 to 10.01 MHz
  • Output Frequency
    10.23 MHz
  • Frequency Stability
    6.4 x10-14, 2.0 x10-14, 6.4 x10-15, 2.0 x10-15
  • Phase Noise
    -154 to -100 dBc/Hz
  • Supply Voltage
    26 to 48.5 V
  • Power Consumption
    21 W
  • Harmonics
    -60 dBc
  • Radiation
    up to 100 kRad
  • Spurious
    -80 dBc
  • Operating Temperature
    -15 to 45 Degree C
  • Storage Temperature
    -40 to 60 Degree C
  • Application
    Giove A & Giove B, Galileo, ISRO (Indian regional navigation satellite system), Navigation payloads (global or regional), High-performance communications systems, Scientific applications, GNSS overlay systems
  • Dimension
    270 x 216 x 137 mm

Technical Documents

Space Missions - A list of all Space Missions

esa

Name Date
Altius 01 May, 2025
AWS 01 Mar, 2024
Eutelsat Quantum 30 Jul, 2021
Sentinel 6 21 Nov, 2020
Cheops 18 Dec, 2019
EDRS 06 Aug, 2019
Small Geostationary Satellite 17 Nov, 2018
BepiColombo 20 Oct, 2018
Aeolus 22 Aug, 2018
Sentinel 3B 25 Apr, 2018

isro

Name Date
EOS-2 07 Aug, 2022
EOS-4 14 Feb, 2022
EOS-3 12 Aug, 2021
EOS-1 07 Nov, 2020
RISAT-2BR1 11 Dec, 2019
Cartosat-3 27 Nov, 2019
Chandrayaan II 06 Sep, 2019
RISAT-2B 22 May, 2019
Resourcesat-2A 07 Dec, 2016
AstroSat 28 Sep, 2015

nasa

Name Date
NEO Surveyor 01 Jun, 2028
Libera 01 Dec, 2027
Europa Clipper 10 Oct, 2024
SpaceX CRS-29 09 Nov, 2023
Psyche 13 Oct, 2023
DSOC 13 Oct, 2023
Psyche Asteroid 05 Oct, 2023
Expedition 70 27 Sep, 2023
SpaceX Crew-7 25 Aug, 2023
STARLING 18 Jul, 2023