Power supplies
Page 199 of 544
Option 11C and 11C Mini
Technical Reference Guide
•
Differential mode and common mode EMI filtering of input.
•
Input power (-52VDC) for the Meridian Mail power supply (NTAK13).
DC power supply features
The DC power supply has the following features:
•
Power (± 15V) for one attendant console.
•
Generation of a system line transfer signal and power (-52V) for the
Power Fail Transfer Unit (250 MA maximum).
Voltage
The AC/DC power supply and the DC power supply p5.1, +8.5, +15,
-15V, -150V, -52V power supplies and filtered -48V.
There is a 1.0 second start-up delay on the +5V rail.
Ringing Generator
The AC/DC power supply and the DC power supply provide the ringing
generator for telephones:
•
Ringing voltage: 70, 75, 80, 86V.
•
Ringing frequency: 20, 25, 50 Hz, switch selectable.
•
Ring sync: A pulse 500 us wide, 6 or 11 ms (±3 ms) before the positive
going zero crossing of the ringing waveform (11 ms for 20/25 Hz).
•
Power: The output capability is 8VA which is capable of ringing 8CA4
ringers.
Power supply LED
The LED on the power supply faceplate labelled “DC” will be turned off
whenever there is a problem with the power supply.
Summary of Contents for Meridian 1 Option 11C Mini
Page 2: ......
Page 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Page 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Page 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Page 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Page 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Page 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Page 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Page 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Page 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Page 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Page 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Page 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Page 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Page 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Page 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Page 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Page 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Page 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
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