User's Manual

MBF-40 AMERICAS REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
www.cobham.com/wireless
Page | 2-6
Date: 14-Feb-16
Rev. 4.3
Cobham Wireless – Coverage
Document number: 00071UM
2.1.5.2 115 VAC Power Source Cable Requirements
Cable requirements:
• Cable should be NRTL (safety) approved with a minimum of 14AWG or 2.5mm
2
per conductor,
and maximum of 12AWG or 4mm
2
per conductor.
• For safety, the GND cable must be 10mm longer than the Phase and Neutral cables.
2.1.5.3 -48V Power Source Connection Requirements
Note: The -48VDC version of the power supply is designed to turn off if the supply voltage falls
below -36V (±1V), not to drain the feeding battery. It will turn on again as the supply voltage
reaches -43V (± 1V).
-48V power supply requirements
The 48VDC power supply must comply with SELV requirements, as defined in EN60950, which
implies double isolation. The output power needs to be 48VDC +25%/-15%. The maximum input
current is 8A.
Recommended cable areas for 48VDC
Distance Cable Area
0 - 10 meters between repeater and
power supply
2,5 mm²
10 – 50 meters between repeater
and power supply
4 mm²
Over 50 meters between repeater
and power supply
Recommendation is to reconfigure the installation, or to make
special arrangements to increase cable area
2.1.6 Optic Cables Guidelines
This product is equipped with Class 1 Lasers, as per definition in EN 60825-1.
CAUTION!!!
Un-terminated optical receptacles may emit laser radiation.
Do not stare into beam or view with optical instruments.
WARNINGS!!
Maximum input power should not exceed (zero) 0 dBm
Clean the Fibre
connectors (receptacles and cables) before
connecting. See Appendix C – F/O Cleaning Procedure for details
on F/O cleaning procedures.
Note the following:
• This procedure requires opening the repeater.
• Use angled APC connectors at 8deg angle over the complete link between the Repeater and OMU
• Use APC type ODF connections
• Recommended Fibre cable is single mode 9/125
• Cable length - determined by the Remote installation plan. When calculating the cable length,
take into account excess cable slack so as not to limit the insertion paths.