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ADCP-75-130 • Issue 3C • August 2006
Page 13
© 2006, ADC Telecommunications, Inc.
2.4 Terms and Definitions
Refer to Table 4 for a listing of the terms used in this manual and their definition.
Table 4. Terms and Definitions
TERM DEFINITION
Alarm Response The response to an alarm input.
Base Transceiver Station The radio equipment that transmits and receives the voice and control
channels to and from the cellular handsets.
Composite Signal A signal that is the sum of several signals.
Digital Expansion Unit The unit that extends a single optical interface to multiple optical
interfaces or that extends an optical run.
Digital Host Unit The unit that converts and provides the digital source signal to all DEU’s
and DRU’s and converts summed inputs from DEU’s and DRU’s.
Digital Remote Unit The unit that interfaces the in-building user to the Digivance optical transport.
Digitized RF Signal The RF signal in a digitized form.
Forward Path Signal A signal that travels from the base station to the cell phone.
Major Alarm An alarm condition that applies when any fault (except high
temperature) occurs.
Minor Alarm The alarm condition that applies when a high temperature condition
occurs. (> 50º C/122º F)
Mute To force a forward path RF signal to a “no signal” state.
Normal State The operating state after power-up is completed and no faults are detected.
Port An RF, optical, or electrical interface point.
Port Alarm A fault that affects only the unit or units connected to that port.
Indicates no optical input to port.
Power-Up State The period between the application of power to a unit and the normal
state. This period includes time for circuit stabilization and
initialization operations.
Reverse Path Signal A signal that travels from one or more cell phones to the base station.
Transport Alarm Signal An alarm signal transported over the reverse path optical fiber.
Unit Alarm A fault within a unit that usually affects all connected ports.
2.5 Specifications
Refer to Table 5 for the Digivance ICS system specifications. All specifications apply after a
five minute warm-up period.