Gai-tronics IDR1000A DC Remote User and Installation Manual Manuel d'utilisateur Page 4

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Table of Contents IDR1000A DC Remote Desk Set User and Installation Manual
02/12 Pub. 43004-005C iii
CABLE INSTALLATION SAFETY CONSIDERATIONS..................................................................................................... 12
TELEPHONE LINE LIGHTNING AND OVER-VOLTAGE PROTECTION............................................................................. 12
POWER CONNECTIONS.............................................................................................................................................. 13
LINE CONNECTIONS.................................................................................................................................................. 13
Line Considerations - Private Circuit ................................................................................................................. 13
Circuit Conditioning ........................................................................................................................................... 14
SETTINGS AND ADJUSTMENTS .................................................................................................................................. 14
Line Input Level Adjustment ............................................................................................................................... 15
Remote Adjustment ............................................................................................................................................. 15
Line Output Adjustment ...................................................................................................................................... 15
Handset Earpiece Volume Adjustment ................................................................................................................ 15
PROGRAMMING ........................................................................................................................................................ 16
DC Current Magnitude Table ............................................................................................................................. 17
PROGRAMMING MODE ............................................................................................................................................. 18
DESK SET REASSEMBLY ........................................................................................................................................... 18
THEORY OF OPERATION .................................................................................................................................... 19
DIGITAL CIRCUITS .................................................................................................................................................... 19
Analog-to-Digital Conversions ........................................................................................................................... 19
Serial Peripheral Interface ................................................................................................................................. 19
DC CURRENT GENERATION ..................................................................................................................................... 19
AUDIO CIRCUITS ...................................................................................................................................................... 20
SPEAKER VOLUME CONTROL ................................................................................................................................... 20
POWER SUPPLIES ...................................................................................................................................................... 20
TROUBLESHOOTING ............................................................................................................................................ 21
TROUBLESHOOTING THE IDR1000A DC REMOTE DESK SET ................................................................................... 21
FUSE REPLACEMENT ................................................................................................................................................ 22
MAIN CIRCUIT BOARD ........................................................................................................................................ 23
SCHEMATICS .......................................................................................................................................................... 25
DEFINITIONS AND ACRONYMS ......................................................................................................................... 33
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