185
Glossary
A
A/D:
Analogue/Digital
AC:
Access Concentrator
ADPCM:
Adaptive Differential Pulse Code Modulation
AGC:
Automatic Gain Control
AIS:
Alarm Indication Signal or All Ones
AMI:
Alternate Mark Inversion
AU:
Analogue Unit
B
BER:
BIT Error Rate
C
CAS:
Channel Associated Signalling
CPE:
Customer Premises Equipment
CT:
Central Terminal
CTU:
Concentrated Tributary Unit
CU:
Compression Unit
D
D/A:
Digital/Analogue
DA:
Demand Assignment
DACU:
Demand Assignment Commissioning Unit
DC:
Direct Current
DIP:
Diplexer
DMM:
Digital Multi Meter
DSP:
Digital Signal Processor
DTE:
Data Termial Equipment
DTU:
Demand Assignment Tributary Unit
F
FA:
Fixed Assignment
FRU:
Field Replaceable Unit
H
HDLC:
High Level Data Link Control
I
Содержание AS4000
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Страница 27: ...Installation 23 Typical 75ohm DDF Layout ...
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Страница 38: ...Printed Documentation 34 AC Rack Labeling The racks should be labelled as shown below Access Concentrator Rack ...
Страница 39: ...Installation 35 Interface Connections This page contains miscellaneous interface and connector details ...
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Страница 42: ...Printed Documentation 38 BNC Terminations to Coax ...
Страница 43: ...Installation 39 Type 43 Terminations to Coax ...
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Страница 69: ...Installation 65 Interface Connections This page contains miscellaneous interface and connector details ...
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Страница 72: ...Printed Documentation 68 CT Rack Labelling Central Terminal Rack ...
Страница 73: ...Installation 69 BNC Terminations to Coax ...
Страница 74: ...Printed Documentation 70 Type 43 Terminations to Coax ...
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Страница 78: ...Printed Documentation 74 Card Insertion DA Rack Card Insertion Expansion Rack ...
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Страница 112: ...Printed Documentation 108 Combiner Shelf PSU ...
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Страница 151: ...Setup and Test 147 11 From the AS4020 front panel exit commissioning mode by selecting RF Commissioning Off ...
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