HY02 Digital TBU User's Guide
Contents
Warranty And Safety Information .................................................................. i
Warranty Registration....................................................................................................i
HY02
Digital
TBU ............................................................................................................i
Warranty Details ............................................................................................................. i
Safety Of Mains Operated Equipment ..........................................................................i
HY02
Digital
TBU ............................................................................................................i
Preparing the Machine for Use ....................................................................................... i
Equipment Safety ........................................................................................................... ii
Voltage Setting Checks .................................................................................................. ii
Power Cable and Connection ......................................................................................... ii
Fuse Rating .................................................................................................................... iii
Removing the Covers ..................................................................................................... iii
Limitation of Liability ....................................................................................................... iii
Faults Sheet ....................................................................................................................iv
1. Introduction & Installation.......................................................................... 1-1
1.1. Introduction .............................................................................................................1-1
1.2. Description...............................................................................................................1-1
1.2.1. Manufacturer......................................................................................................... 1-2
1.2.2. Equipment Type.................................................................................................... 1-2
1.2.3. BABT Approval Number........................................................................................ 1-2
1.2.4. Functions .............................................................................................................. 1-2
1.2.5. Specified Systems ................................................................................................ 1-2
1.2.6. Ringer Equivalence Number ................................................................................. 1-2
1.2.7. Accessory Ports.................................................................................................... 1-2
1.2.7.1 Barriered Ports.......................................................................................................1-2
1.2.7.2 Accessory Ports .....................................................................................................1-2
1.2.8. Conditions............................................................................................................. 1-3
1.2.9. Series Connection ................................................................................................ 1-3
1.2.10. Facilities.............................................................................................................. 1-3
1.2.11. Statutory Mark .................................................................................................... 1-3
1.3. Specification ............................................................................................................1-3
1.4. Installing the HY02
Digital
TBU..............................................................................1-4
1.5. Using the HY02
Digital
............................................................................................1-5
1.5.1. Receiving a Call.................................................................................................... 1-5
1.5.2. Making a Call ........................................................................................................ 1-5
1.6. Front Panel Controls and Displays........................................................................1-5
1.6.1. LED Indicators ...................................................................................................... 1-5
1.6.2. Bar Graph LED’s................................................................................................... 1-5
1.6.3. Line Connect Switch ............................................................................................. 1-6
1.6.4. Transmit and Receive Level Adjustment............................................................... 1-6
1.6.4.1 Receive Level ........................................................................................................1-6
1.6.4.2 Transmit Level .......................................................................................................1-6
1.7. Questions and Answers .........................................................................................1-7
2. Circuit Description & Controls................................................................... 2-1
2.1. Mains Power Unit Circuit Description ...................................................................2-1
2.2. Electronic Digital Hybrid Unit Circuit Description................................................2-1
2.2.1. Input Circuits and Limiter ...................................................................................... 2-1
2.2.2. Telephone Line, Barrier and Transformer ............................................................. 2-3
2.2.3. Output Circuits ...................................................................................................... 2-3
2.2.4. Divert Switch Logic ............................................................................................... 2-3
2.2.5. Line Balancing Electronics.................................................................................... 2-4
2.2.5.1 Duplex Control .......................................................................................................2-4
2.2.5.2 Adaption System....................................................................................................2-4
2.2.5.3 Send Circuit ...........................................................................................................2-4
2.2.5.4 Receive Circuit.......................................................................................................2-5
2.2.5.5 Hardware Control...................................................................................................2-5
2.2.5.6 Digital Cancellation Control....................................................................................2-5
2.2.6. Ring Detect Circuits .............................................................................................. 2-5
2.2.7. Dial Tone Detectors .............................................................................................. 2-6
2.2.8. Displays ................................................................................................................ 2-6
2.3. Alignment Controls .................................................................................................2-7
2.3.1. Jumpers................................................................................................................ 2-7
2.3.2. Preset Potentiometers .......................................................................................... 2-7
2.3.3. LEDs..................................................................................................................... 2-7
3. Connection Details...................................................................................... 3-1
3.1.1. Mains Power ......................................................................................................... 3-1
3.1.2. Line Input.............................................................................................................. 3-1
3.1.3. Line Output ........................................................................................................... 3-1
3.1.4. Remotes ............................................................................................................... 3-1
3.1.5. Power ................................................................................................................... 3-2
3.1.6. Protective Earth Terminal ..................................................................................... 3-2
Index ................................................................................................................. I-1
Summary of Contents for HY02 DIGITAL
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