Communication Structure Via C37.94 Interface To Transceiver 21-216; Setting Up Transceiver 21-216 - Hitachi 670 Series Application Manual
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1MRK505382-UEN Rev. K
5.5.2
Communication structure via C37.94 interface to transceiver
21-216
LOCAL
IEC07000260 V1 EN-US
Figure 70:
IED
Transceiver 21–216
PCM
5.5.3
Setting up transceiver 21–216
Confirm that the attenuation of the fibre-optic cable, including splices and patch cables, does not
exceed the system budget. Remember to add a safety margin (minimum 3dB).
Make sure that the local fibre-optic transmitter (marked Tx) is connected to the remote unit's fiber-
optic receiver (marked Rx). Local Rx is to be connected to remote Tx.
Communication set-up, 670/650 series
Application Guide
< 10 m
IED
Transceiver
PCM
21-216xx
C37.94
Multi-mode
fibre-optic
< 3 km
Galvanic
connection
interface
G.703
External clock
Internal clock
(slave)
(master)
Communication structure via C37.94 interface to transceiver 21–216
Terminal used for binary signal transfer
Optical-to-electrical interface converter
Pulse code multiplexer
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< 10 m
PCM
Transceiver
21-216xx
Multi-mode
Galvanic
connection
interface
G.703
External clock
(slave)
Communication set-up
GUID-0072DAE4-B2D8-4866-B820-4E7B3F8B1CDA v1
REMOTE
IED
C37.94
fibre-optic
< 3 km
IEC07000260-1-en.vsdx
GUID-0206E4D5-50DA-49E2-80E3-4F89A2540A7B v1
Section 5
73
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