General Installation Instructions Please consider these general instructions in addition to any product‐specific instructions in the “Installation” chapter of this manual. Unpacking Check the equipment for any transport damage. If the unit is mechanically damaged, if liquids have been spilled or if objects have fallen into the unit, it must not be connected to the AC power outlet, or it must be immediately disconnected by unplugging the power cable. Repair must only be performed by trained personnel in accordance with the applicable regulations. Installation Site Install the unit in a place where the following conditions are met: The temperature and the relative humidity of the operating environment must be within the specified limits during operation of the unit. Values specified are applicable to the air inlets of the unit. Condensation may not be present during operation. If the unit is installed in a location subject to large variations of ambient temperature (e.g. in an OB‐van), appropriate precautions must be taken. Unobstructed air flow is essential for proper operation. Ventilation openings of the unit are a functional part of the design and must not be obstructed in any way during operation (e.g. ‐ by objects placed upon them, placement of the unit on a soft surface, or improper installation of the unit within a rack or piece of furniture). The unit must not be unduly exposed to external heat sources (direct sunlight, spot lights). Ambient Temperature Units and systems by FiberPlex are generally designed for an ambient temperature range (i.e. temperature of the incoming air) of +5...+40 °C. When rack mounting the units, the following facts must be considered: The permissible ambient temperature range for operation of the semiconductor components is 0 °C to +70 °C (commercial temperature range for operation). The air flow through the installation must allow exhaust air to remain cooler than 70 °C at all times. Average temperature increase of the cooling air shall be about 20 C°, allowing for an additional maximum 10 C° increase at the hottest components. If the cooling function of the installation must be monitored (e.g. for fan failure or illumination with spot lamps), the exhaust air temperature must be measured directly above the modules at several places within the enclosure. Grounding and Power Supply Grounding of units with mains supply (class I equipment) is performed via the protective earth (PE) conductor integrated in three pin Phoenix™ connector. Units with battery operation (< 60 V, class III equipment) must be earthed separately. Grounding the unit is one of the measures for protection against electrical shock hazard (dangerous body currents). Hazardous voltage may not only be caused by defective power supply insulation, but may also be introduced by the connected audio or control cables. This equipment may require the use of a different line cord, attachment plug, or both, depending on the available power source at installation. If the attachment plug needs to be changed, refer servicing to qualified personnel. ...
Warranty, Service and Terms and Conditions of Sale For information about Warranty or Service information, please see our published ‘Terms and Conditions of Sale’. This document is available on fiberplex.com or can be obtained by requesting it from clients@fiberplex.com or calling 301.604.0100. Disposal Disposal of Packing Materials The packing materials have been selected with environmental and disposal issues in mind. All packing material can be recycled. Recycling packing saves raw materials and reduces the volume of waste. If you need to dispose of the transport packing materials, recycling is encouraged. Disposal of Used Equipment Used equipment contains valuable raw materials as well as substances that must be disposed of professionally. Please dispose of used equipment via an authorized specialist dealer or via the public waste disposal system, ensuring any material that can be recycled has been. Please take care that your used equipment cannot be abused. After having disconnected your used equipment from the mains supply, make sure that the mains connector and the mains cable are made useless. Disclaimer The information in this document has been carefully checked and is believed to be accurate at the time of publication. However, no liability is assumed by FiberPlex for inaccuracies, errors, or omissions, nor for loss or damage resulting either directly or indirectly from use of the information contained herein. ...
Introduction The FOM‐3841 and FOM‐3842 provide complete electrical isolation for four independent channels of 2‐wire telephone communications. The FOM‐3842 supports standard analog phones, STU‐III (secure telephone unit) phones, STE (secure telephone equipment) phones, fax machines, and modems and supports Caller ID. The units can be used in areas of high electrical noise or in and out of RF shielded enclosures. The fiber optic cable is not susceptible to interference caused by impulse noise, crosstalk, or EMI. Privacy of communications is also enhanced because the fiber optic cable does not radiate any emissions. In addition, fiber optic cable offers much longer transmission distances than traditional telephone line cord wiring. Multimode optics on the units can extend the distance to 2km, while singlemode optics can further extend the distance to 20km. A typical link consists of an FOM‐3841 connected to the POTS line and an FOM‐3842 at the subscriber’s phone with a duplex fiber optic cable between them. Key Features Channel Telephone to Fiber Module Typical Applications Include: Standard POTS Telephones STU‐III and STE Phones Fax Machines Modem Getting Started Initial Inspection Immediately upon receipt, inspect the shipping container for damage. The container should be retained until the shipment has been checked for completeness and the equipment has been checked mechanically and electrically. If the shipment is incomplete, if there is mechanical damage, or if the unit fails to operate notify FiberPlex and make the shipping materials available for the carrier's inspection. ...
Page 6
Features Rear Indicators/Connections Figure 1: FOM‐3841/3842 Rear ...
Page 7
Chassis Mounting Screws (x2) – These captive fasteners secure the FOM card in the chassis. The heads 1 are knurled so that no tool is required for mounting/dismounting. Optics Status LED – This LED, for each position, indicates status as per the following table; 2 Optics Status LED Status Description Steady Green Optics in sync at each end of link Flashing Green Local optical RX is receiving errors Steady Yellow Remote optical RX loss of signal or sync Flashing Yellow Local optical RX signal present, but no sync Flashing Orange Card type mismatch at remote end; the two cards are not compatible Steady Red No optical RX signal Off Card failure Status LED – This LED, for each position, indicates status as per the following table; 3 Power Status LED Status ...
Page 8
Front Displays FOM-3842 POTS Exchange POTS Subscriber Power Power Optics Optics SW Option SW Option CH 1 Off Hook CH 1 Off Hook Ringing Ringing CH 2 Off Hook CH 2 Off Hook Ringing Ringing CH 3 Off Hook CH 3 Off Hook Ringing Ringing...
Page 9
Power Requirements and Mounting Flexible mounting allows the FOM‐5400 to be mounted in any of a number of FOM‐series chassis. Chassis mounting using RMC‐5000 Combinations of up to 16 FiberPlex FOM‐series cards may be installed into a RMC‐5000 rack chassis. A loaded RMC‐5000 is shown below; Figure 3 FOM Card being installed into an RMC‐5000 Standalone using SAC‐1‐AC Single FOM‐series cards may be installed into the SAC‐1 chassis, either desk, wall, or rack mounted, depending on the accessory brackets (included in every SAC‐1 shipment) utilized. Figure 4 FOM Card being installed in a SAC‐1‐AC ...
Inserting and Removing SFP Modules Handling Warnings SFP Modules are static sensitive. To prevent damage from electrostatic discharge (ESD), it is recommended to attach an ESD preventative wrist strap to your wrist and to a bare metal surface when you install or remove an SFP Module. Disconnect all optical or copper cables from SFP Modules prior to installing or removing the SFP Module. Failure to do so could result in damage to the cable, cable connector or the SFP Module itself. Removing and inserting an SFP Module can shorten its useful life, so you should not remove and insert SFP Modules any more often than is absolutely necessary. Protect optical SFP modules by inserting clean dust covers into them after the cables are removed. Be sure to clean the optic surfaces of the fiber cables before you plug them back into the optical ports of another SFP module. Avoid getting dust and other contaminants into the optical ports of your SFP modules, because the optics will not work correctly when obstructed with dust. Identify the Latch Type of the SFP Module SFP Modules have various latching mechanisms to secure them into the SFP Cage of a device. FiberPlex Modules can support a host of manufacturers and brands of SFP Modules so the user may encounter any number of different latches. Some of these are described below. Bail Clasp Actuator Button The bail clasp SFP module has a clasp The actuator button SFP module includes a button that you that you use to remove or install the SFP push in order to remove the SFP module from a port. This module. button can either lift ‘Up’ or press ‘In’ to release the SFP Module depending on the manufacturer. Mylar Tab Slide Tab The Mylar tab SFP module has a tab that The slide tab SFP module has a tab underneath the front of the you pull to remove the module from a SFP module that you use to disengage the module from a port. port. ...
Inserting a Module Attach an ESD‐preventative wrist or ankle strap, following its instructions for use. Disconnect and remove all interface cables from SFP Module. If the SFP Module has a Bail Clasp , close the Bail Clasp before inserting the SFP Module. With the gold finger connector on the bottom and the label on the top, line up the SFP Module with the empty cage and slide it in making sure that it is completely inserted and seated in the cage. Removing a Module Attach an ESD‐preventative wrist or ankle strap, following its instructions for use. Disconnect and remove all interface cables from SFP Module. Release the latching mechanism. Bail Clasp – Open the bail clasp on the SFP Module with your finger in a downward direction. Actuator Button – Gently press the actuator up (or in) while pulling the body of the SFP Module to release the SFP Module from the cage. Mylar Tab – Pull the tab gently in a straight outward motion until it disengages from the port. Make sure the tab is not twisted when pulling as it may become disconnected from the SFP Module. Slide Tab ‐ With your thumb, push the slide tab on the bottom front of the SFP module in the direction of the equipment to disengage the module from the line card port. If you pull on the SFP module without disengaging the tab, you can damage the SFP module. Grasp the SFP Module between your thumb and index finger and ...
DIP Switch Settings Switch Designations As shown below, each DIP switch is assigned a numerical designation which is keyed to the descriptive text; Figure 5 FOM‐3841/3842 DIP Switches ...
Page 13
Switch Settings Switch Parameter S1.1 S1.2 Reserved S1.3 DOWN (OFF)‐ Normal Ringing S1.4 Channel 1 Ring Mode UP (ON) – Unbalanced Ring S1.5 S1.6 Reserved S1.7 DOWN (OFF)‐ Normal Ringing S1.8 Channel 2 Ring Mode UP (ON) – Unbalanced Ring S1.1 S1.2 Reserved S1.3 DOWN (OFF)‐ Normal Ringing S1.4 Channel 3 Ring Mode UP (ON) – Unbalanced Ring S1.5 S1.6 Reserved S1.7 DOWN (OFF)‐ Normal Ringing ...
ELECTRICAL SPECIFICATIONS Min Typ Max Unit Voltage Range 20 24 34 V Power Requirement Supply Current ‐ 250 ‐ mA Min Typ Max Unit Storage Temperature ‐40 ‐ 85 °C Environmental Operating Temperature 0 ‐ 50 °C Interface Connector FOM‐384x RJ11 (x4) Min Typ ...