Tait T860 Series II, Service Manual

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M860-00-Preliminary
T865 Initial Tuning & Adjustment B3.1
Copyright TEL 30/06/98
3 T865 Initial Tuning & Adjustment
The following section describes both short and full tuning and adjustment procedures
and provides information on:
• channel programming
• selecting the required audio links
• synthesiser alignment
• receiver front end and IF alignment
• noise and carrier level mute adjustment
• setting the line and monitor output levels
• setting up the RSSI.
Note: Unless otherwise specified, the term "PGM800Win" used in this and follow-
ing sections refers to version 2.00 and later of the software.
Refer to Section 6 where the parts lists, grid reference index and diagrams will provide
detailed information on identifying and locating components and test points on the
main PCB. The parts list and diagrams for the VCO PCB are in Part E.
Section Title Page
3.1 Introduction 3.3
3.2 Channel Programming 3.3
3.3 Test Equipment Required 3.4
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.4.1
3.4.4.2
3.4.5
3.4.6
Short Tuning Procedure
Introduction
Synthesiser Alignment
Front End Alignment
Mute Adjustment
Noise Mute
Carrier Level Mute
Line Amplifier Output
RSSI (If Used)
3.5
3.5
3.5
3.5
3.6
3.6
3.6
3.6
3.7
3.5
3.5.1
3.5.2
Audio Processor Links
General
Audio Processor Linking Details For CTCSS
3.8
3.8
3.9
3.6 Synthesiser Alignment 3.10
3.7 Alignment Of Receiver Front End And IF 3.10
3.8 Gating Delay 3.12