TFT EAS 930A User Manual

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CONTENTS (Continued)
CHAPTER 5 - THEORY OF OPERATION
Paragra ph Titl e P age
5. 1 In tr od uction ................................................................................................................................... 5- I
5.2 System Bl oc k Di agram Description ................................................................................................... 5-1
5.3 AM Recei ve r Module Block Diagram Description ................................................................................. 5-2
5.4 FM Receiver Module Block Di agram Description .................................................................................. 5-3
5.5 Noaa Weather Rec ei v er Module Block Diagram Description ................................. . ....... . ........................... 5-4
5.6 Speaker Amp & Power Supply Board Circuit Desc ri ption ...................................................................... 5-6
C HA PTER 6 - MAINTENANCE
6.1 General Info nn ation ................................................... . ................................................... ................. 6-1
6.2 AM Receiver Pe
rf ormance Checks ..................................................................................................... 6-1
6.2.1 AM Receiver Sen si tivity Check .............................................................................................. 6-1
6.2.2 AM Receiver AGC Ran ge Check .. ........................................................................................... 6-2
6.2.3 AM Receiv
er Audio Output Adjustment ................................................................................... 6-2
6.3 FM Recei ve r Performance Checks ..................................................................................................... 6-2
6.3. l FM Receiver
Se nsitivity Ch eck ............................................................................................... 6-2
6.3.2 FM Receiver A
GC Range Check .................... . ..................................................................... ... 6-3
6.3.3 FM Receiver Audio Output Adjus tm ent ............................... . ................................................... 6-3
6.4 NOAA Weather Radio Receiver Performan ce Checks ............................................................................. 6-4
6.4. I NOAA W ea ther Radio Receiver Sensitivity check .................................... . .................................. 6-4
6.4.2 NOAA Weather Radio Receiver AGC Range Ch
ec k .................................................................... 6-4
6.4.3 NOAA Weather Radio Receiver Audio Output Adjustment .......................................................... 6-5
6.5 Troublesh
oo ting Guide ..................................................................................................................... 6-5
5.5. l AM Receiver Module ...................................................................... . ................ . .................... 6-5
5.5.2 FM Receiver Module
............................................................................................................. 6-5
5.5.3 NOAA W
ea ther Radio Receiver M od ule ................................................................................... 6-6
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TFT EAS 930A Specifications

General

Brand	TFT
Model	EAS 930A
Category	Receiver
Language	English