Black Box 39004, 39005 manual Setting Description

Page 12

 

 

 

CHAPTER 4: Setup

 

 

Table 4-1. Key, Jumper, and Switch Settings

 

 

 

 

 

Number

Setting

Description

 

 

 

 

 

1

 

Loop Mode Key: Press the key switches through the

 

 

 

following operating modes: Normal operation, Digital

 

 

 

loop, Remote loop. The unit enters loop mode when the

 

 

 

distant modem gets switched to remote loop.

 

 

 

 

 

2

 

Clock Source

 

 

 

Internal

 

 

 

Remote

 

 

 

External

 

 

 

 

 

3

 

Interface Speed

 

 

Position D

1.544 kbps

 

 

 

1544

 

 

 

All other settings are not applicable.

 

 

 

 

 

4

 

 

 

 

 

 

 

5

 

Processor Connector

 

 

 

Not used. Do not install any jumpers!

 

 

 

 

 

6

 

For factory use only. Do not install any jumpers!

 

 

 

 

 

7

 

Fiber Optic Output Power

 

 

Low

 

 

 

High

 

 

 

 

 

11

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Contents T1 Fiber Optic Line Extender/Simulator FCC Information T1 Fiber Optic Line EXTENDER/SIMULATOR NOM Statement General Safety Precautions Transport, Installation, and OperationMains Power Fiber OpticsTrademarks Trademarks Used in this ManualContents Specifications Features IntroductionDescription Typical ApplicationConnectors, Indicators, Controls Connector, Indicator, or ControlSetup Location of Jumpers on the Printed Circuit BoardSetting Description FO/S LED Setup Clock Mode CommentsData Signals Data Signals at Normal ModeData Signals Appendix Fiber Optic Planning Guidelines IntroductionFiber Optic Calculation Example values for calculations below See Figure A-1Figure A-1. Attenuation diagram Operation Diagram Figure A-2. Operation Diagram Figure A-3. Your Application Copyright 2000. Black Box Corporation. All rights reserved