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Hitachi ATT-20 Manuals
Manuals and User Guides for Hitachi ATT-20. We have
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Hitachi ATT-20 manual available for free PDF download: Installation, Operation, Troubleshooting
Hitachi ATT-20 Installation, Operation, Troubleshooting (42 pages)
Audio Track Transceiver
Brand:
Hitachi
| Category:
Transceiver
| Size: 1.39 MB
Table of Contents
Table of Contents
5
1 General Information
7
Introduction
7
Physical Description
7
Specifications
7
Power Requirements
7
Transceiver Characteristics
8
Receiver Characteristics
8
Table 1-1. Adjacent Frequency Rejection
8
Miscellaneous
9
Figure 1-1. ATT-20 Dimensions
9
2 Application, Installation, and Adjustments
11
General
11
Shunt Mode Track Circuit Application
11
Figure 2-1. Shunt Mode Track Circuit Application
11
Series Mode Track Circuit Application
12
Figure 2-2. Series Mode Track Circuit Application
12
Terminal Connections
13
Mounting Requirements
13
General Considerations
13
Shunt Mode Operation
14
Shunt Mode Installation
14
Shunt Mode Adjustment
15
Series Mode Operation
15
Series Mode Installation
16
Series Mode Adjustment Without Cable Compensating PCB
16
Table 2-3. Cable Length Vs. Frequency
16
Series Mode Adjustment with Cable Compensating PCB
17
Lightning Protection
17
Figure 2-3. Lightning Arrester and Surge Ripple Filter for Shunt Mode Application
19
Figure 2-4. Lightning Arrester and Surge Ripple Filter for Series Mode Application
20
3 Functional Description
23
General
23
Shunt Mode Track Circuit
23
Series Mode Track Circuit
23
Detailed Circuit Description
23
Transmitter
23
Receiver
24
Figure 3-1. Transmitter PCB Schematic Diagram
25
Figure 3-2. Receiver PCB Schematic Diagram
27
4 Field Maintenance
29
General
29
Test Equipment
29
General Checks
29
Shunt Mode Checks
29
Figure 4-1. ATT-20 Test Circuit for Shunt Mode Application
30
Series Mode Checks
31
Figure 4-2. ATT-20 Test Circuit for Series Mode Application
31
5 Shop Maintenance
33
6 Parts Lists
35
ATT-20 Audio Track Receiver Kits
35
ATT-20 Audio Track Transceiver Units
35
ATT-20 Audio Track Receiver Parts List
36
Figure 6-1. ATT-20 Parts Illustration
38
Cable Compensating PCB Parts List
39
Figure 6-2. ATT-20 Wiring Diagram
39
Figure 6-3. Cable Compensating PCB Parts Layout and Schematic Diagram
40
7 Rail Team and Technical Support
41
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