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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description

Page 2-16

• Digitizes the reverse path composite RF signal.

• Converts the digitized reverse path RF signal to a digitized optical signal.

• Provides an RS-232 interface for connecting a local EMS computer.

• Transports alarm, control, and monitoring information to the HU via the optical link.

• Provides an AC power interface.

• Provides an external alarm interface.

5.1 Primary Components

The STM consists of an electronic circuit board assembly, power supply, duplexer, and fan

assembly that are mounted within an anodized and powder-paint coated sheet metal enclosure.

The metal enclosure provides a mounting point for the electronic components and also controls

RF emissions. Except for the fan unit, the electronic components are not user replaceable. The

STM is designed for use within the RU outdoor cabinet or indoor mounting shelf. Except for the

LPA interface connector, all controls, connectors, indicators, and switches are mounted on the

STM front panel for easy access. A carrying handle is provided on the front of the STM to

facilitate installation and transport.

Figure 2-7. Spectrum Transport Module

5.2 Mounting

The STM mounts within the RU outdoor cabinet or indoor mounting shelf. Runners on the top

and bottom of the STM mesh with tracks. The runners and tracks guide the STM into the

installed position. The electrical interface between the STM and LPA is supported by a D-sub

18634-B

FCC ID: F8I-DLCSMR2A User Manual - Part 2

Summary of content (11 pages)

PAGE 1
FCC ID: F8I-DLCSMR2A User Manual - Part 2 ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description • Digitizes the reverse path composite RF signal. • Converts the digitized reverse path RF signal to a digitized optical signal. • Provides an RS-232 interface for connecting a local EMS computer. • Transports alarm, control, and monitoring information to the HU via the optical link. • Provides an AC power interface. • Provides an external alarm interface. 5.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description female connector located on the rear side of the STM. A corresponding D-sub male connector mounted at the rear of the RU cabinet or RU mounting shelf mates with the STM connector. Captive screws are provided for securing the STM in the installed position. 5.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description 5.8 Powering The STM is powered by 120 or 240 VAC (50 or 60 Hz) power which is supplied through a three-conductor AC power cord. The power cord is provided with the RU outdoor cabinet or indoor mounting shelf. The power cord connects to an AC connector mounted on the STM front panel. A switch on the STM front panel provides AC power On/Off control. 5.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description Table 2-4. Spectrum Transport Module User Interface, continued REF NO USER INTERFACE DESIGNATION FUNCTIONAL DESCRIPTION DEVICE 10 STM Multi-colored LED (green/yellow/red) Indicates if the STM is normal (green) or faulty (red). See Note. 11 PA Multi-colored LED (green/yellow/red) Indicates if the power amplifier is normal (green), over temperature (yellow), has a fan failure (yellow), or is faulty (red). See Note.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description 6 LINEAR POWER AMPLIFIER The Linear Power Amplifier (LPA), shown in Figure 2-9, works in conjunction with the STM to amplify the forward path RF output signal. The STM is interfaced with the LPA through the D-sub connectors and wiring harness located at the rear of the RU cabinet or RU mounting shelf. The RF signal is passed to the LPA for amplification and then passed back to the STM for filtering and output via the STM’s ANTENNA port.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description 6.3 Fault Detection and Alarm Reporting The LPA in conjunction with the STM detects and reports various faults including power amplifier fault, output power fault, temperature fault, and fan fault. A single Light Emitting Diode (LED) indicator, located on the front panel of the LPA, turns from green to red or yellow if an LPA fault is detected.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description (1) STATUS (2) MUTE/NORM/ RESET SWITCH 18765-A Figure 2-10. Linear Power Amplifier User Interface 7 INTERFACE PANELS (ACCESSORY) The interface panels are accessory items that are used when multiple EBTS’s require connection to a single EBTS. Two types of panels are available: the Primary Interface Panel and the Expansion Panel.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description The Expansion Panel, shown in Figure 2-12, is used in conjunction with the Primary Interface Panel when more than 6 EBTS’s must be connected to a single HU. The Primary Interface Panel can support two Expansion Panels and each Expansion Panel can support up to six EBTS’s. For complete information about the SMR Interface Panels, refer to the Digivance Long Range Coverage Solution SMR Interface Panels User Manual (ADCP-75-143).
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description 9 COARSE WAVELENGTH DIVISION MULTIPLEXER SYSTEM (ACCESSORY) The Coarse Wavelength Division Multiplexer (CWDM) system is an accessory product that is used when it is desirable or necessary to combine the forward and reserve path optical signals for up to four Digivance systems onto a single optical fiber. Each CWDM system consists of a Host Module, Host Module mounting shelf, and Remote Module.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description 10 DIGIVANCE ELEMENT MANAGEMENT SYSTEM The Digivance Element Management System (EMS) is a network management tool that provides control and monitoring functions for the Digivance system. The EMS is used to provision and configure new systems for operation, set system operating parameters, get system alarm and status messages, and upgrade the system software.
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ADCP-75-159 • Issue 1 • August 2003 • Section 2: Description DCE interface. A straight-through RS-232 interface cable (accessory item) equipped with a male DB-9 connector on one end and a PC-compatible connector on the other end is required to link the EMS computer to the HU. When multiple HUs are networked together, the EMS computer may be connected to the service connector on any one of the networked HUs. 10.