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RFL C37.94 Instruction Data
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RFL C37.94 Instruction Data

Fiber service unit
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I N S T R U C T I O N D A T A
RFL (C37.94) Fiber Service Unit
Single Mode
108015-1
108015-2
108015-3
108015-4
108015-5
Figure 1. Typical RFL Fiber Service Unit, Front Panel view
The RFL Fiber Service Unit (FSU) provides an interface between synchronous electrical signals and
optical fiber. It can be used with the RFL 9300, RFL 9745, RFL IMUX 2000 or other types of
multiplexers. It can also be used with any other C37.94 compliant, end device. There are a total of five
varieties of FSUs using both single and multimode fiber heads. They use RS-449, V.35, G.703, X.21
and E1 as inputs and outputs on the non-fiber side of the connection. Note that there is a modification
allowing the unit to be mounted into a 1U Chassis. The FSU is a stand-alone device, which is
essentially a translator to and from data sent using these five interface standards in accordance with the
IEEE C37.94 fiber protocol. The G.703 is 64,000 bps only and thus it has N fixed at 1. The other four
versions use a DIP switch to set the value of N. The characteristics of each of the five types of Fiber
Service Units, is shown in Tables 1, 2 and 3. Mounting dimensions are shown in Figure 12, except for
the 1U version of the unit which is shown in Figure 6 and 9.
RFL C37.94FSU
May 20, 2013
B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
RFL Electronics Inc.
Multimode
107460-1
RS-449
107460-2
V.35
G.703
107460-3
107460-4
X.21
107460-5
E1
R
X
RS - 449
RFL Electronics Inc. Boonton, New Jersey USA
Multi and Single mode mounted in 1U chassis
RS-449
107460-1-1
V.35
107460-1-2
G.703
107460-2-2
X.21
107460-3-1
E1
107460-5-1
RFL FSU
107460-1
DESCRIPTION
1
RS-449 (Multimode)
RS-449 (Single Mode)
V.35 (Single Mode)
G.703 (Multimode)
E1 (Multimode)
TX
RFL Electronics Inc.
(973) 334-3100

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Summary of Contents for RFL C37.94

  • Page 1 IEEE C37.94 fiber protocol. The G.703 is 64,000 bps only and thus it has N fixed at 1. The other four versions use a DIP switch to set the value of N. The characteristics of each of the five types of Fiber Service Units, is shown in Tables 1, 2 and 3.
  • Page 2 108015-4 108015-5 RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .

  • Page 3: Specifications

    SPECIFICATIONS As of the date this Instruction Data Sheet was published, the following specifications apply to the RFL Fiber Service Unit. Because all RFL products undergo constant refinement and improvement, these specifications are subject to change without notice. IEEE Standard: C37.94 for N times 64 kilobit per second optical fiber interfaces between teleprotection and multiplexer equipment.

  • Page 4: Installation

    Carefully inspect the module for any signs of shipping damage. If you suspect damage to the module, immediately call RFL Customer Service at the number given at the bottom of this page. Check the assembly number on the front panel of the module to make sure the unit is compatible with your interface requirement as shown in Table 1.
  • Page 5 SW1-1 through SW1-4 are ignored by the (107460-3) G.703 module since its data rate is fixed at 64 kb/s. For an RFL 9745 the data rate is 64 kb/s. For an RFL 9300 the data rate is 64 kb/s.
  • Page 6 Input Power applicable (Top View) Figure 2. Connecting the FSU to an RFL 9300 Note: The FSU unit is orientated differently in a 1U chassis; the connections are the same (See Fig. 6 and 9) Type ST bayonet Short haul fiber...
  • Page 7 BNC connectors as applicable Figure 4. Connecting the FSU to a non-C37.94 compliant multiplexer Note: The FSU unit is orientated differently in a 1U chassis; the connections are the same (See Fig. 6 and 9) RFL C37.94FSU RFL Electronics Inc.

  • Page 8: Front Panel

    CONTROLS AND INDICATORS (107460-1 to 107460-4) The RFL FSU (107460-1 to 107460-4) has user controls and indicators as shown in Figures 5 and 7. Figure 5 shows the location of all controls, indicators and connectors on the front and rear panels of the FSU module.

  • Page 9: Controls And Indicators

    CONTROLS AND INDICATORS (107460-1-1, 107460-1-2, 107460-2-2, 107460-3-1) The RFL FSU units 107460-1-1, 107460-1-2, 107460-3-1 are identical to the previous assemblies, however they have been modified to fit into a 1U Chassis. As shown below, the unit mounts from the rear with all controls, indicators and connections on the rear panel. Figure 7 shows the location of controls and indicators on the ECB number 107463.
  • Page 10 Figure 7. Fiber Service Unit ECB No. 107463 (Board A), controls and indicators (107460-1 to 107460-4, 107460-1-1, 107460-1-2, 107460-3-1) RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 11 BUS part number is: GMD-.25A RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 12 CONTROLS AND INDICATORS (107460-5) The RFL FSU (107460-5) has user controls and indicators as shown in Figures 8, 10 and 11. Figure 8 shows the location of all controls, indicators and connectors on the front and rear panels of the FSU module.
  • Page 13 CONTROLS AND INDICATORS (107460-5-1) The RFL FSU (107460-5-1) is identical to the 107460-5 unit shown on the previous page; however it has been modified to fit into a 1U Chassis. As shown below, the unit mounts from the rear with all controls, indicators and connections on the rear panel.
  • Page 14 DS7 DS6 DS1 DS2 DS3 Figure 10. Fiber Service Unit ECB No. 107463-5 (Board A), controls and indicators (107460-5, 107460-5-1) RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 15 SW203 Figure 11. Fiber Service Unit ECB No. 107463-5 Board B (107460-5, 107460-5-1) RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 16 BUS part number is: GMD-.25A RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 17 ON = Inverted data OFF = Normal operation (default setting) RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 18 RX Data - Chassis RFL C37.94FSU RFL Electronics Inc. May 20, 2013 (973) 334-3100 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
  • Page 19 (21.61 cm) 4.73 in. (12 cm) Figure 12. Mounting Dimensions, RFL 93 FSU Fiber Service Unit (107460-1 to 107460-5 and 108015-1 to 108015-5) Figure 12. Mounting Dimensions, RFL 93 FSU Fiber Service Unit (107460-1 to 107460-5 and 108015-1 to 108015-5) RFL C37.94FSU...
  • Page 20 Notice The information in this publication is proprietary and confidential to RFL Electronics Inc. No part of this publication may be reproduced or transmitted, in any form or by any means (electronic, mechanical, photocopy, recording, or otherwise), or stored in any retrieval system of any nature, unless written permission is given by RFL Electronics Inc.

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