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Converters & Extenders

Fiber Optical Delay Unit IEEE C37.94

Fiber Optical Delay Unit IEEE C37.34 21-224
Fiber Optical Delay Unit IEEE C37.34 21-224
Standard

Fibersystem 21-224 is an electro optical multiplexer between one G.703/704 E1 and two IEEE C37.94 optical ports which are fully mapped into the G.704 standard frame structure of the E1 port, allowing for further SDH/ PDH multiplexing and de-multiplexing. 21-224 derives its synchronization from the network port (E1) or from an internal 2048Kbps PDH compliant clock enabling it to be used in leased line applications using electrical E1 modems such as SHDSL and alike.

Product no
60-00-6763
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Datasheets

In the catalogue

Specifications

Fiber Optical Delay Unit IEEE C37.94

Fiber optic link

Fiber Optical Delay Unit IEEE C37.94 – Fiber optic link
Data rate2048 kbps.
ProtocolIEEE C37.94.
FiberMultimode 50/125 μm or 62.5/125 μm, ST-connector
Optical system budget13 dB in 62.5/125 μm. 9 dB in 50/125 μm fiber
Typical distance0-2 km (3 dB system margin for 50/125 μm and 6 dB for 62.5/125 μm)

Galvanic link

Fiber Optical Delay Unit IEEE C37.94 – Galvanic link
Data rate2048 kbps
ProtocolG.703, E1
Connector2 x BNC, coaxial cable

Power supply

Fiber Optical Delay Unit IEEE C37.94 – Power supply
DC48 VDC to 250 VDC, ±20 %
AC230 VAC ±20 %, 50−60 Ηz
AC connectorIEC 320, 3 pin

Environment

Fiber Optical Delay Unit IEEE C37.94 – Environment
Operating temperature-25 to +55 °C
Storage temperature-40 to +85 °C
Relative humidity, operating5 to 95 %RH
Relative humidity, storage5–95 % RH, non-condensing

CE compliance

Fiber Optical Delay Unit IEEE C37.94 – CE compliance
ImmunityEN 61000-6-2
EmissionEN 61000-6-4
LVDEN 50178; RIV = 250 V OVC = III

Mechanical compliance

Fiber Optical Delay Unit IEEE C37.94 – Mechanical compliance
VibrationIEC 60255-21-1 Class 2
ShockIEC 60255-21-2 Class 2
SeismicIEC 60255-21-3 Class 2

EMC compliance

Fiber Optical Delay Unit IEEE C37.94 – EMC compliance
ESDIEC 60255-22-2 Class 3, contact 6 kV, air 8 kV
RadiatedIEC 60255-22-3 / IEEE/ANSI C37.90.2; 35 V/m
Burst, powerIEC 60255-22-1 Class III
Burst, communicationIEC 60255-22-1 Class II; 0.5 kV diff; 1 kV common mode
Fast transient, powerIEC 60255-22-4 Class IV

Insulation

Fiber Optical Delay Unit IEEE C37.94 – Insulation
Dielectric testIEC 60255-5, 2.0 kV 1 min
Impulse voltage testIEC 60255 / EN 50178 5 kV / 6 kV
Insulation resistanceIEC 60255-5; >100 Mohm at 500 VDC

Specifications taken from the product datasheet. The datasheet remains the binding document — ask us if anything is unclear for your installation.

About the product

  • Two independent IEEE C37.94 (C3794) fiber optical connections over a single E1
  • Standards compliant for power substation installations
  • 19″ mounting with only 200mm depth
  • Single power supply range from 48VDC to 230VAC

Environments

Used in these environments

Where the equipment is used, and what makes each setting hard.

Environments →

Part of these architecture patterns

  1. A C37.94 island inside an E1 or SDH network
  1. Power plant with high electromagnetic interference

In the catalogue

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