Pdh/Sdh Telecommunication Via C37.94 Interface To Transceiver 21-219; Communication Requirements; Communication Structure With Transceiver 21-219 Port Synchronized From Sdh Master Clock - Hitachi 670 Series Application Manual
Hide thumbs
Also See for 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (284 pages) ,
- Product manual (192 pages)
Table of Contents
1MRK505382-UEN Rev. K
IED
(local)
IEC07000155 V1 EN-US
Figure 79:
5.6
PDH/SDH telecommunication via C37.94 interface to
transceiver 21-219
5.6.1
Communication requirements
PDH/SDH telecommunication network set-up can be done via 64 kbit/s or 2 Mbit/s C37.94 interface
to transceiver type 21-219.
Communication quality in PDH telecommunication networks is usually lower than in SDH
telecommunication networks due to less stable master clocks. The bit error rate is typically BER10
An SDH telecommunication network with an accurate master clock usually enables high quality
communication with very low bit error rate (BER10
Communication system requirements are defined in Appendix
communication
5.6.2
Communication structure with transceiver 21-219 port
synchronized from SDH master clock
Setting up an SDH telecommunication network requires that transceiver 21-219 port is synchronized
from the SDH network master clock (see Figure 80). The SDH multiplexer (SDH MUX) must be
configured to fulfil this requirement. The settings are vendor dependent, but usually SDH MUX is to
be set for re-timing, and the format is to be set according to G.704 standard (framed, structured,
unstructured, and so on). The transparent format cannot be used in SDH telecommunication
networks because there is no synchronization available in the transceiver 21–219 SDH port.
Communication set-up, 670/650 series
Application Guide
21-216
(local)
TX
RX
RJ
RX
TX
Multi-mode
optical fiber
E
Communication structure for laboratory testing
requirements.
© 2017 - 2023 Hitachi Energy. All rights reserved
21-216
(remote)
G.703
cable
< 10 m
RX
RJ
TX
Multi-mode
optical fiber
-9
).
Sample specification of
Communication set-up
IED
(remote)
TX
RX
E
IEC07000155-1-en.vsdx
GUID-42A1D332-A59D-49F9-9821-719F3A993774 v1
GUID-DCDF94BA-73EE-4970-86AB-676F1E53634D v1
GUID-0146A8BA-6425-43DE-8945-D1E18A1B82F3 v1
Section 5
-6
.
79
Table of Contents
