Codan Radio Communications UT-3-460-S08 User Manual

iv 

Audio Processor Board Instruction Manual

9.4

Audio Circuits.......................................................................................................9-6

9.5

Power Requirements .............................................................................................9-6

9.6

Transmitter Standby Modes..................................................................................9-6

9.7

Audio Circuitry.....................................................................................................9-7

9.8

AM Audio Processor Factory Configuration........................................................9-8

9.9

AM Audio Processor Alignment...........................................................................9-8

9.10

AM Audio Processor Electrical Parts List...........................................................9-11

9.11

AM Audio Processor Component Layout...........................................................9-14

9.12

AM Audio Processor Schematic Diagram ..........................................................9-15

10

REVISION HISTORY...................................................................................................10-1

Figure 1

Block Diagram - Audio Processor............................................................... 1-3

Figure 2

Pin Connection Diagram.............................................................................. 1-4

Figure 3

Microphone and Balanced Input Circuitry................................................... 3-1

Figure 4

Limiter and Splatter Filter ............................................................................ 3-2

Figure 5

Bypassing Compression.............................................................................. 3-3

Figure 6

TX Audio Control Circuitry......................................................................... 3-4

Table 1

Bandwidth Definition................................................................................... 1-1

Table 2

Factory Configuration.................................................................................. 1-4

Table 3

Turn On Time.............................................................................................. 1-5

Table 4

Mode Condition Table................................................................................. 1-6

Table 5

Standby Mode Selection Table .................................................................... 1-6

Table 6

MT-3 Audio Processor Total Current Consumption.................................... 1-6

Table 7

Operating Current........................................................................................ 5-1

Table 8

Waveform Levels ......................................................................................... 5-2