iReference+® GPS/GNSS Rb/Maser standards

iMaser-3000

Active Hydrogen Maser (iMaser-3000)

T4Science's smart iMaser-3000 clock is a next generation of state-of-the-art, high-performance active hydrogen maser, integrating intelligent functionality in a compact, cost-effective and maintenance-free package. It utilizes the latest maser technologies, including:
- Auto cavity SmarTuning™
- Smart iControl™ Ethernet remote control and monitoring with self-diagnostics
- iDurable™ Teflon and Bulb coating
- iCeramic™ Silver-Plated Cavity operating with high gain and an extremely low H2 pressure and usage
- iShield™ packaging complying to strigent CE mark and EMC interferences
- Active/sleep mode of operations for extended lifetime

The field lifetime of the iMaser is over 30 years, and first and second generations of iMaser clocks deployed since 1982 are still working perfectly today.

RELATED PRODUCTS: See our product brochure to quickly compare other product features and performance. 

Check out our new 100fs FemtoStepper with automatic drift compensation (AutoDrift) when used with the iMaser-3000.

Key Features*

*See or download the full Spec in the Documents page. 

Specifications Standard Options
Output
Number

Input
5 MHz, 100 MHz & 1PPS
2x 10 MHz, 2x 100 MHz, 1x 1PPS

n/a 
10 MHz
2-4x 10MHz
2x 1PPS

Accuracy @ shipment n/a
Tempco
Temp
Aging

<5E-15/C
0 to 40C
2E-16/day*
*auto cavity SmarTuning option
<8E-16/C



Stability (ADEV)
1s
10s
100s
1 ks
10 ks

1.5E-13
2E-14
5E-15
2E-15
2E-15

1.2E-13/8E14

1.8E-14
4E-15
n/a
1.5/1.2E-15
Phase noise

1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
(dBc/Hz)
5 MHz   10 MHz   100 MHz
-118      -112      -92      
-135      -129      -105 
-145      -139      -115
-152      -146      -125 
-155      -149      -145
-155      -149      -145

5 MHz  10 MHz
-130    -121
-142    -135
-152    -145
-156    -150
-156    -150
-156    -150
Holdover n/a
Warm-up time @ 25C n/a  
Power (operating)
Voltage
100W after warm-up
85-264 VAC, 24V DC battery pack
 
Size (WxHxL) 60x80x91cm | 23.7x31.5x35.9"
Weight 100 Kg | 220 lbs 
40 Kg | 88 Lbs/battery pack
Vibration sensiitivity <1E-9/g <5E-10/g
Magnetic sensitivity <5E-14/G <1E-14/G
Lifetime >20 years


Applications

It is typically used in the following applications:

  • Primary frequency referenc sources
  • VLBI (Very Long Baseline Interferometry) systems
  • Deep space tracking & navigational systems
  • Timekeeping & precision time scales
  • GPS/GNSS satellite control, monitoring & geodetic systems

Documents

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