LIU: Line Interface Unit


Generation of reference clocks for synchronisation tasks

The module LIU (Line Interface Unit) generates different reference clock pulses which are derived from the GPS-locked master oscillator of a preconnected GPS clock. The output signals are available with high accuracy and stability therefore.

Key Features

Warranty Period (Years): 3 RoHS-compliant
  • Synchronisation of telecom networks
  • Synchronisation of transmitters/base stations (GSM/CDMA/UMTS/DAB/DVB)
  • Synchronisation/calibration of laboratory equipment
  • Clock and Framed telecom outputs
  • Reference frequency delivered by preconnected GPS-receiver GPS170/GPS170SV
  • Standard frequency outputs




Product Description



Characteristics

Control Elements E1- or T1-generator, settable by DIL-switch or control input
Accuracy of Frequency Outputs The accuracy of the generated output signals depends on the master oscillator of the preconnected GPS-satellite controlled clock. The following options are available:
Option Short term stability with GPS-synchronization
OCXO MQ ±2·10E-10
OCXO HQ ±5·10E-12
Rubidium ±2·10E-12
Interface Clock Outputs:
4 x 2.048 MHz (E1-mode) or 1.544 MHz (T1-mode), G.703, 75 Ohm, unbalanced and
4 x 2.048 MHz (E1-mode) or 1.544 MHz (T1-mode), G.703, 120 Ohm, balanced
Framed Outputs:
4 x 2.048 Mbps (E1-mode) or 1.544 Mbps (T1-mode), 75 Ohm, unbalanced or
4 x 2.048 Mbps (E1-mode) or 1.544 Mbps (T1-mode), 120 Ohm, balanced
Output pulses according to G.703 (E1-mode) or T1.403 (T1-mode) (T1-Mode) Line Coding HDB3 (E1-mode) or B8ZS (T1-mode)
Dimensions of the front panel Width of the front panel depends on the number of front side outputs
4HP/3U - 16HP/3U (20 - 80mm x 128mm)
Electrical Connectors 64 pin rear VG edge connector DIN 41612
Female BNC-connectors for unbalanced outputs
BNC-Twinax-connectors for balanced outputs
Operating Voltage +5 V DC
Current Draw approx. 470mA
Board type Eurocard
Board Dimensions 160 mm x 100 mm, 1,5 mm Epoxy
Supported Temperature Operational: 0 - 50 °C (32 - 122 °F)
Storage: -20 - 70 °C (-4 - 158 °F)
Supported Humidity Max. 85 % (non-condensing) at 40 °C
Warranty Three-year warranty
RoHS Status of Product This product is fully RoHS-compliant.
WEEE Status of Product This product is handled as a B2B (Business to Business) category product. To ensure that the product is disposed of in a WEEE-compliant fashion, it can be returned to the manufacturer. Any transportation expenses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself.


Downloads

Short Info Sheet



Manuals


Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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