Specifications

2240 Fiber Optic Modem

Table of Contents

1. Description .................................................... 11

1.1 2240 Modem................................................................11

1.1.1 Functions, LEDs and Switches ............................................. 12

1.2 2201 Rack Chassis ......................................................13

1.3 2202 Modem Shelf ......................................................13

1.4 2200R Series Redundant Card ..................................14

1.5 Modem Operation ......................................................14

1.5.1 General .................................................................................. 14

1.5.2 System Test and Diagnostics ................................................ 16

1.5.3 Transmit Section ................................................................... 16

1.5.4 Receive Section ..................................................................... 17

1.5.5 Expanded Interface Control Channels .................................. 17

1.5.6 Expanded Interface Auxiliary Channels ............................... 17

1.5.7 Fiber Optics ........................................................................... 18

1.6 Loss Budget .................................................................18

1.7 Initial Unit Testing .....................................................18

2. Installation and Setup .................................. 19

2.1 Installation ..................................................................19

2.1.1 Unpacking the Unit ............................................................... 19

2.1.2 Standalone Modem Installation ............................................ 19

2.1.3 Rack-Mount Modem Installation .......................................... 20

2.1.4 Fiber Cable and Connectors .................................................. 20

2.1.5 2202 Modem Shelf Installation ............................................. 21

2.1.6 Custom Oscillator Installation .............................................. 21

2.2 Setup ............................................................................22

2.2.1 HI / LO Optic Power Switch ................................................. 22

2.2.2 Internal Control Switches...................................................... 24

2.2.2.1 Carrier Detect (CD) Signal Options ................................... 24

2.2.2.2 Internal Clock Option Switches ......................................... 25

2.2.2.2.1 TBL / NORM Switch ...................................................... 25

2.2.2.2.2 CLK / EXT Switch .......................................................... 25

2.2.3 Signal Ground Strap .............................................................. 26

2.2.4 SCT Normal / Invert Jumper ................................................. 26

2.2.5 EXTRA CLOCK Jumper ...................................................... 27