Custom Networking Products and Network Solutions by CBM of America

Warranty
CBM of America warrants that its equipment is free from defects in materials and workmanship. The warranty period is one year from the date of shipment. CBM of America's obligation under this warranty is limited to the repair or replacement of the defective equipment provided it is returned to CBM, shipping prepaid, within a reasonable period of time. This warranty shall not apply to equipment that has been subject to accident, misuse, alterations, or repairs not made or authorized by CBM.

Copyright
This publication and the equipment it describes contain proprietary information. No part of this document may be copied or reproduced in any form without permission from CBM of America. The information in this document is subject to change without notice. CBM of America assumes no responsibility for damages resulting from the use of this document, including but not limited to, lost revenue, lost data, or other damages. If you have any comments or suggestions regarding this document please e-mail brendan@cbmusa.com or call 800-881-8202.

Operational Specifications
The Multi-Mode Optical Isolator is designed to operate within a voltage range of 36VDC to 72VDC and at an operating temperature of -10 to 40 degrees C.

Antistatic Precautions
Electrostatic discharge ( ESD ) results from the buildup of static electricity and can cause damage to electronic components. ESD precautionary practices are required when installing, configuring, or repairing the Optical Isolation Patch Panel. Use of a wrist strap is recommended. Do not use conductive tools to change parts or jumper settings in the Multi Mode Optical Isolator.

NEBS Compliance
This Class 2 data communications equipment has been Level 3 NEBS compliance tested and approved under the guidelines specified by the Bellcore GR-63-CORE, and Bellcore GR-1089-CORE Technical References. The CBM Multi Mode Optical Isolator conforms to the UL Standard for Safety, ANSI/UL 1950, Third Edition.

Support
CBM of America maintains a 24 hour support organization for the installation and operation of this product. Call 800-881-8202 with the serial number of the product and a technical support representative will return your call promptly.

Technical Specifications of the MMOI

Product Overview
The CBM Multi-Mode Optical Isolator (MMOI) is a 48VDC rack mountable high speed device that provides universal connectivity and optical isolation for up to 19 network element connections per chassis utilizing any of the eight (8) interfaces listed below. The MMOI provides ground plane violation protection for digital switch connections such as maintenance terminal applications for new installations and retrofits from isolated ground plane MAP rooms to integrated ground plane MAP rooms. Configured via jumpers, the unit also can provide hardware interface conversion as needed (eg. RS530 on the input and RS232 on the output) and can operate at data transfer rates of up to 120KB. An internal loopback feature allows for the driver outputs to be connected to the receiver inputs for convenient diagnostic testing. No external loopback plugs or devices are necessary for accurate testing.

Interface Modes Supported

- RS-232
- EIA-530
- RS-449
- V.35

- RS-422 / X.21
- V.36
- EIA-530A
- RS-485

EIA RS232-C - CCITT V24 Interface detail circuits

PIN SYMBOL FUNCTION CCITT EIA TO DTE TO DCE

01 FG FRAMEGROUND 101 AA

02 TD TRANSMITTED DATA 103 BA YES

03 RD RECEIVED DATA 104 BB YES

04 RTS REQUEST TO SEND 105 CA YES

05 CTS CLEAR TO SEND 106 CB YES

06 DSR DATA SET READY 107 CC YES

07 SG SIGNAL GROUND 102 AB

08 DCD DATA CARRIER DETECT 109 CF YES

15 TC TRANSMITTED CLOCK 114 DB YES

17 RC RECEIVER CLOCK 115 DD YES

20 DTR DATA TERMINAL READY 108,2 CD YES

22 RI RING INDICATOR 125 CE YES

24 ETC EXTERNAL TRANSMITTER CLOCK 113 DA YES

The Multimode Isolator is designed to be an extension of a DTE port. This means that the signals pass from the IN port of the Multimode to the OUT port with no change in function; i.e., the circuit ID's (CCITT or EIA) remain the same. If a "null modem" is require to interface a second DTE in the place of the normal DCE the null modem should be on the OUT port of the Multimode. This will serve to make the second DTE appear to be DCE and the interface requirements to be met.

Installation
Mount the chassis in a 19 or 23 inch frame with the enclosed brackets, wire (16AWG) from the terminal block on the rear of the Power Management Module (PMM) to a local fuse panel and insert a 3Amp fuse. The unit comes equipped with a dual post ground lug that should be wired (10AWG) to a bare spot on the associated relay rack. The terminal block has two scan point alarm leads. The unit ships with the leads in the 'normally closed' position but may be changed to 'normally open' by moving the jumper on the PMM (see next page diagram). Set the Multi-Mode Optical Isolation Modules for the desired Input and Output Hardware Interfaces by removing the module and setting the associated jumpers. Cable the Network Elements to the bottom DB25 connector (DCE) at rear of the MMOI. Cable the top DB25 connector to the network. The bottom connector is the Input (DCE) and the top is the Output (DTE) (see diagrams).

Fault and Alarm Conditions
A defective individual Multi-Mode Isolation Circuit Card will cause the fault light on the Power Manager Module to turn from green to red. This condition will also bring in an alarm at the associated scan point. The defective card will have no LEDs lit and can be replaced with the power on. Caution should be exercised to prevent Electrostatic Discharge (ESD). Use of a wrist strap is recommended.

A defective Power Manager Module Circuit Card will cause the LEDs on the entire chassis to go out. This condition will also bring in an alarm at the associated scan point. Prior to replacing the Power Manager Module, the fuse at the local Fuse Panel should be removed. After replacing the Power Manager Module re-insert the fuse in the local Fuse Panel. Caution should be exercised to prevent Electrostatic Discharge (ESD). Use of a wrist strap is recommended.

Part Numbers

UC-Chassis-DC
MM-1000
PAF-1000
MM-ADPTR-AI
MM-CBL-35F
MM-CBL-CIS10
Multi-Mode Chassis with PAF-1000
Multi-Mode Isolation and Translation Module
Multi-Mode Power / Alarm Module
Multi-Mode AI 196 I/O Adapter
Multi-Mode DB25 to V.35 Adapter Cable
Multi-Mode Cisco DB25 to HD60 Adapter Cable

Mounting Hardware
The MMOI ships with reversible mounting brackets to accommodate 19 and 23 relay racks. For installation in a 5ESS Miscellaneous Bay the brackets should be left in the factory default position (19 inches) and the associated 'Z' brackets (part # PPBRKT-0063) hould be added. For cable management, the 5ESS Mounting Kit ships with two (2) 25 inch towel bars (part # UC-MMTIEBAR).