Hitachi ATT-20 Installation, Operation, Troubleshooting page 6

6.2. ATT-20 Audio Track Transceiver Units .................................................................................... 6-1
6.3. ATT-20 Audio Track Receiver Parts List .................................................................................. 6-2
6.4. Cable Compensating PCB Parts List ........................................................................................ 6-5
7. RAIL TEAM AND TECHNICAL SUPPORT ...................................................................................... 7-1
Figure 1-1. ATT-20 Dimensions ......................................................................................................... 1-3
Figure 2-1. Shunt Mode Track Circuit Application .............................................................................. 2-1
Figure 2-2. Series Mode Track Circuit Application ............................................................................. 2-2
Figure 2-3. Lightning Arrester and Surge Ripple Filter for Shunt Mode Application .......................... 2-9
Figure 2-4. Lightning Arrester and Surge Ripple Filter for Series Mode Application ....................... 2-10
Figure 3-1. Transmitter PCB Schematic Diagram .............................................................................. 3-3
Figure 3-2. Receiver PCB Schematic Diagram .................................................................................. 3-5
Figure 4-1. ATT-20 Test Circuit for Shunt Mode Application ............................................................. 4-2
Figure 4-2. ATT-20 Test Circuit for Series Mode Application ............................................................. 4-3
Figure 6-1. ATT-20 Parts Illustration .................................................................................................. 6-4
Figure 6-2. ATT-20 Wiring Diagram ................................................................................................... 6-5
Figure 6-3. Cable Compensating PCB Parts Layout and Schematic Diagram .................................. 6-6
Table 1-1. Adjacent Frequency Rejection ......................................................................................... 1-2
Table 2-1. Terminal Assignments...................................................................................................... 2-3
Table 2-2. Ring-by Parameters for 0.1 Ohm Shunting ...................................................................... 2-5
Table 2-3. Cable Length vs. Frequency ............................................................................................ 2-6
Table 6-1. ATT-20 Unit Kits ............................................................................................................... 6-1
Table 6-2. ATT-20 Unit (Only) ........................................................................................................... 6-1
Table 6-3. Miscellaneous Application Units ...................................................................................... 6-1
Table 6-4. ATT-20 Unit Parts List ...................................................................................................... 6-2
Table 6-5. ATT-20 Part Tabulation .................................................................................................... 6-3
Table 6-6. Cable Compensating PCB Parts List ............................................................................... 6-5
Copyright 2019
List of Figures
List of Tables
SM 6299 Rev. 3, March 2019
ATT-20 Audio Track Transceiver
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