Rev. 1.0
FMX30/FMX100/FMX250 User’s Manual
iv
3.3.1
Passwords...............................................................................................3-4
3.3.2
Main Function List...................................................................................3-4
3.3.3
Readings Function List ............................................................................3-5
3.3.4
Settings Function List..............................................................................3-6
3.3.5
Factory Setting Functions........................................................................3-7
3.3.6
Audio Monitor .........................................................................................3-7
3.3.7
Fault Log .................................................................................................3-7
3.4 Power-up procedure ....................................................................................3-8
3.4.1
Apply Power ............................................................................................3-8
3.4.2
Enter Initial Settings ................................................................................3-8
3.4.3
Transmit ..................................................................................................3-8
Section 4—Principles of Operation
4.1 Block Diagram .............................................................................................4-2
4.2 Audio Processor Circuit Board.....................................................................4-3
4.2.1
Balanced Input ........................................................................................4-3
4.2.2
Audio Processor......................................................................................4-3
4.3 Stereo Generator Circuit Board ....................................................................4-4
4.3.1
Low-pass filter ........................................................................................4-4
4.3.2
Stereo Generator .....................................................................................4-5
4.3.3
SCA Input................................................................................................4-5
4.3.4
Processed Audio .....................................................................................4-5
4.4 RF Exciter Circuit Board...............................................................................4-6
4.5 Digital Management System ........................................................................4-7
4.5.1
Metering Boards......................................................................................4-7
4.5.2
Front Panel ..............................................................................................4-7
4.6 Motherboard................................................................................................4-8
4.7 Voltage Regulator Circuit Board...................................................................4-8
4.8 Power Regulator Circuit Board ....................................................................4-9
4.9 RF Driver/Amplifier (FM30)..........................................................................4-9
4.10 RF Driver (FM100/FM250) ...........................................................................4-9
4.11 RF Amplifier (FM100/FM250) ......................................................................4-9
4.12 Chassis ......................................................................................................4-10
4.13 RF Output Filter & Reflectometer ...............................................................4-11
4.14 Receiver Circuit Board Option....................................................................4-11
Section 5—Service and Support
5.1 Service.........................................................................................................4-2
5.2 24–Hour Support.........................................................................................4-2
5.3 Spare Parts..................................................................................................4-2
