EC22S Epsilon Clock0 pages

Epsilon Clock
Model EC22S

• Fully redundant dual GPS clock
• Dedicated to applications
demanding in quality, reliability and
availability:
o Digital Video and Audio
Broadcast: DVB-T/H/SH, FLO,
T-DMB, ISDB-T
o Wireless Telecom: CDMA,
WiMAX, TDOA caller locations
• Dual High performance OCXO
disciplined by GPS
• EpsilTimeTM smart predictive
slaving algorithm
• Smart switching with low phase
jump, in case of clock failure
• 8 x 1PPS TTL outputs
• 8 x 10 MHz outputs
• Remote management by SNMP/
HTTP, through Ethernet port

The Epsilon Clock™ 22S provides high reliability synchronization solutions with very accurate and
stable time and frequency signals. The high performance suits a comprehensive range of applications
where excellent accuracy is required, especially synchronization of mobile wireless base stations,
emitters for digital audio or video broadcast.
The highest reliability is provided by fully redundant clock modules feeding an automatic fast
monitoring and switching controller. Outputs signals are switched with very low phase glitch. Both
clock modules integrate their own frequency generation circuit and autonomous power supply. They
are hot swappable for online repair. Modules are accessible from the front panel.
A very high performance ovenized oscillator (OCXO) slaved to the GPS input source offers outstanding
accuracy and phase noise; it’s improved for excellent temperature stability and very low aging. The
oscillator in conjunction with the EpsilTime™ smart predictive slaving algorithm mitigates the effects
of inherent GPS noise and complies to the most stringent holdover mode requirements if GPS is lost.
Furthermore, the 10 MHz frequency reference is cycle locked to the 1PPS, meaning that there are
always exactly ten million cycles between 1PPS occurrences. This unique feature is essential to avoid
phase jumps and wander between time and frequency references.
Setup, status and alarms are accessible by remote control through any internet browser and/or
through SNMP protocol. The antenna cable delay and the choice of time scale (UTC or GPS) are
programmable on both modules. Alarms via relay contacts are available. Status is displayed on the
front panel by LEDs.

• RoHS Compliant

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UK | 6A Beechwood | Chineham Park | Basingstoke, Hants, RG24 8WA | +44 (0)1256 303630 | info@spectracom.co.uk

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FRANCE | 3 Avenue du Canada | 91974 Les Ulis, Cedex | +33 (0)1 64 53 39 80 | sales@spectracom.fr

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USA | 1565 Jefferson Road, Suite 460 | Rochester, NY 14623 | +1.585.321.5800 | sales@spectracomcorp.com