PRELIMINARY
Radio Description
More information about the maintenance button can be found in
Indicators,
Buttons, and Switches
.
5.3
Position D, Optical Indicators
Optical indicators show the system status. More information about the optical
indicators can be found in
Indicators, Buttons, and Switches
.
5.4
Position E and F, Interface for Optical Cable to Main
Unit
The
1 and
2 interfaces provide connections to optical cables for traffic
and timing signals between the radio and the main unit. A Small Form-factor
Pluggable (SFP)+ is used to connect the optical cable to the radio.
Note:
The radio uses SFP+ modules for optical transmission and optical radio
interfaces on Data 1 (optical cable 1 in) and Data 2 (optical cable 2 out).
Only use SFP+ modules approved and supplied by Ericsson. These modules
fulfill the following:
•
Compliance with Class 1 laser product safety requirements defined in
standard IEC 60825-1.
•
Certification according to general safety requirements defined in standard
IEC 60950-1.
•
Functional and performance verified to comply with Radio System
specifications.
Recommended SFP+ modules are obtained from the product packages for the
Radio System and the Main Remote Installation products. For more information
about SFP modules, refer to
Spare Parts Catalog
and
Main-Remote Installation
Products Overview
for more information.
5.5
Position G,
0
48 V DC Power Supply Interface
The
0
48 V DC power connection is made through a connector. The connector
accepts cables with various cross-sectional areas depending on the cable
length and the radio consumption. The values can be found in Figure 18, and
are calculated using the following formulas:
R=2×(0.02/D)
R- cable resistance
D- cable area (mm
2
)
34
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