Quartzlock Products


The Quartzlock E10-P Portable Rubidium Frequency Reference, is a miniature rechargeable Atomic Clock with 10MHz sine-wave 50 Ohm output.

Recharging / operating from internal 12Vdc, this miniature enclosure, only 103 x 55 x 122mm has all the performance needed for on-site calibrations, referencing and portable transfer standard applications. Quartzlock's SMAC (sub miniature atomic clock) technology far outperforms chip scale atomic clock devices with poor AVAR & phase noise.

The E10-P benefits from simple operation just connect output BNC connector to device under reference.

Operation to warm (3min) from 12V car supply, in transit to on-site application, saves the higher power warm stage.

The E10-P is hand held, with <500g mass, and is one of the smallest & lightest atomic clocks with -95dBc/Hz Phase Noise and 8 x 10-12/100s Stability. (100 x better than any OCXO).

The power consumption is 6W at 12V dc / 500mA after 3min warm time.

No antenna is required or view of sky as the E10-P is a completely independent atomic reference.

Applications include: remote site cellular BTS transmitter and satellite communications ground station frequency referencing for calibration. Field service, low noise (remote from supply line hum & noise) development and short production test use. Noise elimination in referencing for signal sources, spectrum analysers, network analysers, subject to lab noise problems.



  • No drift
  • High stability
  • Compact light weight design
  • > 2hours battery life
  • Stability 8 x 10-11/s


  • Frequency calibration
  • Telecom network synchronisation
  • Broadcast
  • Aviation
  • Nautical
  • Precision test and measurement enviroments
  • Cellular wireless base stations


  • Cost effective
  • High performance reference
  • Precise Frequency Reference
  • SMAC technology

Standard Specification:
Output Frequency 10MHz
Output Level +7 - +13dBm
STS1s 8E-11
STS10s 3E-11
STS100s 8E-12
Aging 1 Day 5E-12
Aging 1 Month 5E-11
Phase Noise 10Hz -95dBc
Phase Noise 100Hz -125dBc
Phase Noise 1Kz -135dBc
Harmonics dBc -40dBc
Warm Time 5 min @ +25C
Retrace 2E-11
PSU Nominal 12Vdc
PSU Min 12Vdc
PSU Max 15Vdc
Current 1.5A
OT Min -20C
OT Max +50C
ST Min -40C
ST Max +70C

Optional Extras

Below you can choose from a range of optional extras to ensure the closest match to your requirements.

Images & Information


The E10-P is a low cost, compact portable rubidium frequency reference capable of operating from external DC or internal batteries. With Quartzlocks SMAC rubidium oscillator at the heart of this instrument it provides the user with a precise frequency reference whereever required, capable of operating for hours with its internal batteries it makes an ideal reference for field service engineers for remote cellular base stations.


More Information