User's Guide

vi Transmitter Main Board Instruction Manual IM20-MT3TXMN

LIST OF FIGURES

LIST OF TABLES

Figure 1 Audio Processor Block Diagram........................................................................2-17

Figure 2 Interconnection Pin Layout Diagram..................................................................2-18

Figure 3 Microphone and Balanced Input Circuitry, V2.3 Audio Processor .....................2-23

Figure 4 Limiter and Splatter Filter, V2.3 Audio Processor...............................................2-24

Figure 5 Bypassing Compression, V2.3 Audio Processor ................................................2-25

Figure 6 TX Audio Control Circuitry, V2.3 Audio Processor ...........................................2-26

Table 1 Mode Condition Table..........................................................................................2-4

Table 2 Standby Mode Selection Table.............................................................................2-5

Table 3 FM Audio Processor Total Current Consumption................................................2-5

Table 4 Time-Out-Timer Settings......................................................................................2-9

Table 5 MT-3 Audio Processor Current Consumption. ..................................................2-11

Table 6 Bandwidth Table.................................................................................................2-15

Table 7 Factory Configuration........................................................................................2-18

Table 8 Turn on Time......................................................................................................2-19

Table 9 Transmitter Main Board Jumpers.........................................................................3-3

Table 10 Main Board Test Points........................................................................................3-4

Table 11 Waveform Levels..................................................................................................4-1

Table 12 Interconnection Pin Definitions ............................................................................6-1

Table 13 Audio Processor Version 1.8 Jumper Settings......................................................7-2

Table 14 Jumper and Select Values Table - Wideband Synthesized Transmitters ...............7-3

Table 15 Jumper and Select Values Table - Narrowband Synthesized Transmitters............7-4

Table 17 Jumper and Select Values Table - Wideband Crystal Transmitters.......................7-6

Table 18 Jumper and Select Values Table - Narrowband Crystal Transmitters....................7-7

Table 19 Jumper and Select Values Table - LTR

Modulated Transmitters.......................7-8