ADC Telecommunications Inc. DSC0802P Benutzerhandbuch

Seite von 8
Host Unit
The rack-mountable Digivance SCS host unit is typically located at a BTS or a facility housing a suite of
BTSes. On the forward path, the host unit digitizes the designated RF band and digitally transports it
over single mode fiber to the remote SCS unit. On the reverse path, the host unit receives the digitized
signal and converts it to RF. The host unit also collects alarm information from the remote unit. 
For system deployments, multiple links can be networked together at the same BTS site. Host units can
be daisy-chained together to allow monitoring and control of multiple links from a single user interface. 
Remote alarm monitoring and control of the Digivance SCS system can also be managed from an off-
site location or NOC. Using a PC with a standard physical layer protocol, communications can be
delivered to the NOC.  In addition to sending alarm notifications to the Digivance EMS through
software, the Digivance SCS host unit also features front panel alarm reporting. LEDs on the front panel
of the host unit will change color depending on the status of the unit. LED displays provide information
regarding the following items:
• Power 
• System mode (active/standby)
• Indication of faulty unit
• RF conditions
Furthermore, alarm contact closures provide major and minor alarms. The host unit has two alarm
contacts that either report system operation is seriously affected (major alarm) or system operation is
degraded (minor alarm). The host unit operates on DC power.
Remote Unit
The low power, small-form-factor Digivance SCS remote unit offers an unobtrusive design and multiple
mounting options that easily blend into the environment.  Mounting options for the single-band and
dual-band remotes include inside pole mount, pole wrap, wall mount, and strand mount. The units,
which can be mounted in a vertical or horizontal position in less than five minutes, are sealed NEMA
6/IP-67 rated enclosures that can be deployed in the harshest environments. Fiber, antenna, and power
input/output connectors are all sealed for maximum protection.
On the forward path, the remote unit receives the digitized signals from the host unit and converts the
signal back into RF to be distributed via an externally mounted antenna. On the reverse path, the
remote unit digitizes the designated RF band and digitally transports it over single mode fiber to the
host unit. 
In addition to sending alarm notifications to the Digivance EMS software, the Digivance SCS remote unit
also features LED alarm reporting. An LED on the bottom of the remote unit will illuminate upon a fault
condition. The LED will display information about the following:  
• System mode (active/standby)
• Indication of faulty unit
• RF conditions
• Power amplifier fault
• Antenna fault system (VSWR)
8/05 • 1337291
Digivance
®
Str
eet-Level Coverage Solution
Digivance
®
Street-Level Coverage Solution (SCS)
3
w w w . a d c . c o m   •   + 1 - 9 5 2 - 9 3 8 - 8 0 8 0   •   1 - 8 0 0 - 3 6 6 - 3 8 9 1