User Manual

SGD-SB2025NT-TUM, Part 1
Jan 12 Page 5 CONTENTS
6.1.10 Mute Threshold Setting .......................................................................................... 50
6.2 M ODULE L EVEL T EST P ROCEDURES .................................................................................. 52
6.2.1 Exciter Module ....................................................................................................... 52
6.2.2 Receiver Module .................................................................................................... 53
6.2.3 Power Amplifier Module ......................................................................................... 55
6.2.4 VCO Board............................................................................................................. 56
6.2.5 Microcontroller Module........................................................................................... 57
7 FAULT FINDING PROCEDURES ....................................................................................... 58
7.1 SB2025 B ASE S TATION .................................................................................................... 58
7.1.1 Transmitter Section ................................................................................................ 58
7.1.2 Receiver Section .................................................................................................... 59
7.2 M ICRO C ONTROLLER PCB ................................................................................................ 59
7.3 R ECEIVER M ODULE ........................................................................................................... 60
7.3.1 VCO Locking.......................................................................................................... 60
7.3.2 Rx Front End.......................................................................................................... 60
7.3.3 IF Section............................................................................................................... 60
7.4 E XCITER M ODULE ............................................................................................................. 61
7.4.1 VCO Locking.......................................................................................................... 61
7.4.2 RF Power............................................................................................................... 61
7.5 P OWER A MPLIFIER ............................................................................................................ 61
8 DRAWINGS......................................................................................................................... 63
8.1 C URRENT D RAWINGS ........................................................................................................ 63
9 SPARES.............................................................................................................................. 71
APPENDICES
A SB2025 Frequency Bands.
B Channel Select DIP Switch Settings.
C Configuration Procedure Cable Requirements.
D SB2025 Micro Controller PCB Link Settings.