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Wandermeter WM-11
Wander Sync Tester
(Pendulum Instruments)
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GPS-based Rubidium-Standard
for the periodical calabration
Interested in a detailed test
of Wander using optical interfaces interfaces
or would you like to generate Wander
Please contact us!
synchronisation synchronization analyzer sync Rubdium Timer measurement measure measurement technology Test units Test tools tester testers wander. GSM T1 E1 calibration Counter telecom Sync Analyser UMTS GSM GPRS Tetra WM-11 Wandermeter tolerance measurement Pendulum Instruments denk-stein:net Maximum Time Interval Error TDEV Time Deviation ADEV video O.172 O.171 test testing synchronization wander jitter tie mtie tdev monitor Ethernet SONET SDH PDH E1 T1 STS-1 research r&d field test remote assurance SCPI GPS rubidium calibration differential absolute remote control ITU ANSI ETSI mask sync view wander meter synchronisation synchronization analyzer sync Rubdium Timer measurement measure measurement technology Test units; Test tools tester testers wander GSM T1 E1 calibration Counter telecom Sync Analyser UMTS GSM GPRS Tetra WM-11 Wandermeter? GPS rubidium calibration differential absolute remote control ITU ANSI ETSI mask sync view wander meter synchronisation synchronization analyzer sync Rubdium Timer measurement measure measurement technology Test units Test tools tester!
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Incorrect synchronization in digital communication networks can cause severe transmission
problems. Voice calls (fixed or cellular) will be lost, Fax machines will misprint,
data will be lost or frequently re-transmitted. In any case, network performance
is degraded, the operators service costs are increased and revenues are down.
The main cause for synchronization problems in transport networks is wander of the
synchronization clock. Quality control of the synchronization clock requires monitoring
of wander over a longer period (hours or days) using an ultra-stable clock as
reference.
So far measurement of Wander has involved bulky, complex and very expensive
instrumentation. To be able to view the wander parameters MTIE and TDEV speci-
fied in international standards, external Rubidium standards and/or external computers
were often needed.
Pendulum Instruments offer two Wandermeter models;
? WM-10, a very accurate and easy-to-use portable Wandermeter, designed for
wander measurements on E1 clock and data signals (2.048 MHz/Mbits/s).
? WM-11, a multi-application synchronization testing tool for a multitude of data
rates in SDH, PDH, SONET, Video and frequency reference distribution networks.
And last but not least, both models come with an affordable price. No need anymore
to refrain from preventive maintenance of wander, due to budget restrictions.
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Wander measurements on transmission rates from 4 kHz to 52 Mbits/s |
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MTIE and TDEV masks |
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mobile and portable 2.048/1.544 MHz clock generator |
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Stability check of 27 MHz video/10 MHz frequency reference signal |
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Easy-to-use e.g. auto-calibration of internal Rubidium |
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-48V DC supply and Ethernet interface (WM-11) |
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