GAI-Tronics ITA2000A ITA2000A Series Tone Remote Adapter with Scanning User and Installation Manual - Manual (Page 4)

Table of Contents ITA2000A Series Tone Remote Adapter
03/13 Publication 43004-010H iii
R ADIO T IE L INE (T ELEPHONE ) C ONNECTIONS .......................................................................................................... 25
Analog Facility Interface Codes ......................................................................................................................... 25
Telephone Line Connection Table ...................................................................................................................... 25
J UMPERS .................................................................................................................................................................. 26
Jumper Table ...................................................................................................................................................... 26
C HANNEL R EVERT (C ONVENTIONAL M ODE O NLY ) .................................................................................................. 27
Channel Revert Settings Table ............................................................................................................................ 27
C ONFIGURATION S WITCH S ETTINGS FOR C ONVENTIONAL M ODE O PERATION .......................................................... 28
Switch Settings for SW1 (Conventional) ............................................................................................................. 28
Switch Settings for SW2 (Conventional) ............................................................................................................. 29
C ONFIGURATION S WITCH S ETTINGS FOR S CAN M ODE O PERATION ........................................................................... 30
Switch Settings for SW1 (Scan) ........................................................................................................................... 30
Switch Settings for SW2 (Scan) ........................................................................................................................... 31
L EVEL S ETTINGS AND A DJUSTMENTS ....................................................................................................................... 32
Receive Audio Level ............................................................................................................................................ 32
Line Output Level ................................................................................................................................................ 32
Transmit Audio Level .......................................................................................................................................... 33
T EST D IAGNOSTICS .................................................................................................................................................. 34
THEORY OF OPERATION .................................................................................................................................... 35
T ECHNICAL O VERVIEW ............................................................................................................................................ 35
Transmit Audio ................................................................................................................................................... 35
Radio Audio ........................................................................................................................................................ 35
Accessory Transmit ............................................................................................................................................. 36
Desk Mic Transmit .............................................................................................................................................. 36
Reset Circuit ....................................................................................................................................................... 36
TROUBLESHOOTING ............................................................................................................................................ 37
T ROUBLESHOOTING THE ITA2000A T ONE R EMOTE A DAPTER ................................................................................ 37
F USE R EPLACEMENT ................................................................................................................................................ 38
MAIN CIRCUIT BOARD ........................................................................................................................................ 39
SCHEMATICS .......................................................................................................................................................... 41
DEFINITIONS AND ACRONYMS ......................................................................................................................... 49