ADCP-75-210 • Issue 1 • March 2007
Page 17
© 2007, ADC Telecommunications, Inc.
1.7.5 Small Form-Factor Pluggable (SFP) Optical Transceiver
The Small Form-Factor Pluggable (SFP) Optical Transceiver, located on the SIF module and
shown in Figure 12, provides the optical interface between the Hub equipment and the RAN
hardware. The SFP has a laser transmitter and an optical receive detector.
The Digivance NXD system uses industry standard SFP optics which offer a number of
configuration options depending on the requirements of the project. The SFP modules are
available separately and may or may not be installed in the SIF depending on the configuration
ordered. The SFP module is specified as up to two per RAN and is able to support two bands
with receive diversity.
The standard SFP module has an optical budget of 9 dB. The SFP module is factory and field
replaceable with optical transceivers having extended optical budgets up to 26 dB or Coarse
Wave-Division Multiplexing (CWDM) optical wavelengths.
Figure 12. Small Form-Factor Optical Transceiver
1.7.6 RAN Down Converter (RDC or RDC2) Module
The RAN Down Converter (RDC or RDC2) Module is a cPCI electronic module housing a
dual-diversity wideband RF receiver. This module takes PCS, Cellular, SMR A, and SMR B
signals from a primary and secondary antenna (via the appropriate multicoupler) and converts
the signals to Digitized Intermediate Frequency (DIF).
7 F/O Dual-LC connectors Fiber/Optics. Optics connector on SFP optical transceiver
8 OP IN Tri-color LED
(green/yellow/red)
Optical In. Indicates input status of the SFP interface: not
enabled (off), good (green), degraded (yellow), or bad output
signals (red)
9 OP OUT Tri-color LED
(green/yellow/red)
Optical Out. Indicates output status of SFP interface: not
enabled (off), good (green), degraded (yellow), or bad fram-
ing, bad parity, no signal, or no signal lock (red)
Table 7. Synchronous Interface Module Faceplate Components
REF # DESIGNATION DEVICE FUNCTIONAL DESCRIPTION
21316-A
