Meinberg Line InterfaceUnit v2.0, Руководство по эксплуатации

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Features LIU
Out 2
Out 1
Out 3
Out 4 Out 4 Out4
Out 2 Out 2
Out 3 Out3
Out 1 Out 1
E1/T1 framed
balanced
E1/T1 Clock
balanced
E1/T1 Clock
unbalanced
The board LIU (
L
ine
I
nterface
U
nit) was designed to convert the GPS-locked standard
frequency of a preconnected Meinberg satellite controlled clock GPS170 or GPS170SV
into several timing signals that can be used for various synchronization or measurement
tasks. Typical applications are:
Measurement and test of synchronization quality of Telecom networks
Calibration and synchronization of laboratory equipment
Test of synchronization of radio transmitters / base stations
(GSM / CDMA / UMTS / DAB / DVB)
There are two seperate signal paths on the board LIU. One is for providing the
standard frequencies, the second path is for generation of the ‘telecom-signals’. All
output signals have high accuracy and stability because they are derived from GPS-
disciplined standard frequencies generated by the preconnected GPS-clock. Depending
on the oscillator option of the preconnected clock, the following accuracies can be
achieved:
oscillator option of clock short term stability GPS-synchronised
OCXO MQ ±2·10
-10
OCXO HQ ±5·10
-12
Rubidium ±2·10
-12
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