UTC Time:
Beijing Time:
Your current location:Home > Products > 暂无记录

MHM2010 hydrogen clock

Product IntroductionTechnical indicatorsDownload

MHM2010 Active hydrogen atom clock

        Microsemi(Acquired by Symmetricom) MHM 2010 ™ (formerly Sigma Tau product) is an active cavity tuned hydrogen atomic clock with short and stable lengths of 8E-14 @ 1s and 2E-16 / day, plus Excellent phase noise performance is the preferred frequency source for applications such as timing, synchronization, and measurement. Self-sustaining operation only a small amount of hydrogen consumption per year: 0.01mole, life of not less than 20 years, 2 years of quality assurance.

        Microsemi(Acquired Symmetricom) MHM 2010 is the only commercially available active hydrogen lasers with independent artificial cavity conversion auto tuning. This technology provides the MHM2010 with excellent long-term stability, and this long-term stability can only be provided by the most stable cesium atomic basis.

        Microsemi(Acquisition of Symmetricom) at each testing stage, for each MHM 2010 are strict quality standards checks and careful review to ensure that each product has a top quality specifications. Upon completion of a product, it will be sent for a number of performance tests to verify all operating parameters.

        Prior to shipment, each device will be rigorously tested and tested to ensure that the performance specifications of each device meet or exceed customer requirements.

Key Features:

  • Long-term automatic operation, very low hydrogen consumption (0.01 mol / year)
  • Automatic adjustment: no external reference input required
  • Frequency resolution: 7.0E-17
  • Frequency control range: 7.0E-10
  • Low phase noise component (OPT)
Applications:
  • Punctual, time-frequency laboratory benchmarks
  • Radio Astronomy:VLBI & VLBA
  • Deep space tracking and navigation
  • GNSS Satellite navigation system monitoring



 

MHM-2010Specifications:

stability(@0.5Hzbandwidth)

time interval

Standard Edition

Low phase noise version

1S

1.5E-13

8.0E-14

10S

2.0E-14

1.5E-14

100S

5.0E-15

4.0E-15

1,000S

2.0E-15

2.0E-15

10,000S

1.5E-15

1.5E-15

噪底*

1.0E-15

1.0E-15

长期稳定性*

2.0E-16/

2.0E-16/

*MHM2010在长期上电、稳定的工作环境下所测得的典型值。

要求温度变化:<±0.25℃,相对湿度:<±10%


相位噪声

频偏

标准版

低相噪版

5MHz

10MHz

100MHz

5MHz

10MHz

100MHz

1Hz

≤-116dBc

≤-110dBc

≤-90dBc

≤-130dBc

≤-124dBc

≤-102dBc

10Hz

≤-135dBc

≤-129dBc

≤-109dBc

≤-150dBc

≤-138dBc

≤-117dBc

100Hz

≤-148dBc

≤-142dBc

≤-122dBc

≤-158dBc

≤-146dBc

≤-126dBc

1 KHz

≤-155dBc

≤-149dBc

≤-129dBc

≤-160dBc

≤-150dBc

≤-133dBc

10KHz

≤-155dBc

≤-149dBc

≤-129dBc

≤-160dBc

≤-153dBc

≤-134dBc

外部环境

温度灵敏度:

1.0E-14/°C

磁灵敏度:

3.0E-14/Gauss

电压灵敏度:

1.0E-14


频率控制

同步频率分辩率:

7.0E-17

频率控制范围:

7.0E-10


有效输出

频率

振幅

5 MHz

13dBm  (3 each)

10 MHz

13dBm

100 MHz

13dBm

负载阻抗:

50Ω


定时输出

类型:

1PPS (正向脉冲)

振幅:

3 V   匹配电阻50Ω (TTL兼容)

脉冲宽度:

20 μs

上升沿时间:

3 ns

抖动:

10 ps 均方根值


定时输入

自动同步输入:

1PPS

振幅:

3 V   匹配电阻50Ω (TTL兼容)

脉冲宽度:

≥20 μs

上升沿时间:

5 ns

抖动:

1 ns 均方根值

同步输入到输出的时间:  

15 ns


电源要求

工作电压:

85264 V  交流

电源频率范围:

4763 Hz

最大功耗:

150W

工作功耗:

75W

外部直流输入:

2228 V  直流;3.1A (典型值)

备用电池:

8小时工作


物理规格

高度:

42.0” (106.68 cm)

宽度:

18.0” (45.72 cm)

深度:

30.0” (76.0 cm)

重量:

475 lbs. (无电池)


外加的电池重量:66 lbs