Note:
The operating environment of the unit must be a temperature-controlled
enclosed location suitable for sensitive data and telecommunication
equipment, with very low levels of airborne particles. For example
Network Telecommunication Facilities or inside an Outside Plant (OSP)
cabinet.
3.1.1 Acoustic Noise
The baseband unit may emit low levels of acoustic noise when operating.
The acoustic noise is ambient temperature dependent.
Table 4 Sound Power Level
Temperature (°C) Baseband Sound Power Level (dB)
+20 <53
+25 <53
+30 <53
+40 <53
+45 <59
+55 <64
3.2 Power Characteristics
The power supply voltage for the baseband unit is −48 V DC. The power supply
requirements are shown in Table 5.
Table 5 DC Power Supply Requirements
Condition Value
Nominal voltage −48 V DC
Operating voltage range −38.0 to −58.5 V DC
Non-destructive range 0 to −60 V DC
Fuse and Circuit Breaker Recommendations
The external fuse and circuit breaker recommendation for the baseband unit is
shown in Table 6.
The recommendations in this section are based on peak power consumption and
give no information on power consumption during normal operation.
The recommended melting fuse type is gG-gL-gD in accordance with
IEC 60269-1. Circuit breakers must comply with at least Curve 3 tripping
characteristics in accordance with IEC 60934.
Technical Data
81/1551-LZA 701 6001/1 Uen AC | 2019-04-11
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