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ENGINEERING COMMITTEE

Construction and Maintenance Subcommittee

AMERICAN NATIONAL STANDARD

ANSI/SCTE 87-1 2003

(formerly CMS WG6-0001)

Graphic Symbols

For Cable Telecommunications Part 1:

HFC Symbols

(2)

NOTICE

The Society of Cable Telecommunications Engineers (SCTE) Standards are intended to serve the

public interest by providing specifications, test methods and procedures that promote uniformity of

product, interchangeability and ultimately the long term reliability of broadband communications

facilities. These documents shall not in any way preclude any member or non-member of SCTE

from manufacturing or selling products not conforming to such documents, nor shall the existence

of such standards preclude their voluntary use by those other than SCTE members, whether used

domestically or internationally.

SCTE assumes no obligations or liability whatsoever to any party who may adopt the Standards.

Such adopting party assumes all risks associated with adoption of these Standards, and accepts full

responsibility for any damage and/or claims arising from the adoption of such Standards.

Attention is called to the possibility that implementation of this standard may require the use of

subject matter covered by patent rights. By publication of this standard, no position is taken with

respect to the existence or validity of any patent rights in connection therewith. SCTE shall not be

responsible for identifying patents for which a license may be required or for conducting inquiries

into the legal validity or scope of those patents that are brought to its attention.

Patent holders who believe that they hold patents which are essential to the implementation of this

standard have been requested to provide information about those patents and any related licensing

terms and conditions. Any such declarations made before or after publication of this document are

available on the SCTE web site at

http://www.scte.org

.

All Rights Reserved

© Society of Cable Telecommunications Engineers, Inc.

140 Philips Road

(3)

TABLE OF CONTENTS

Introduction...1

1. Poles Symbols...2

2. Cable Support Elements...3

3. Anchoring and Guying with Poles Shown...3

4. Miscellaneous Symbols ...4

5. Underground Designations ...4

6. House Drop Designations with Poles Shown...5

7. Make Ready or Pole Line Preparation Recommendations...5

8. Amplifiers ...6

9. Splitting Devices ...6

10. Powering Devices...7

11. Line Devices...7

12. Subscriber Taps...8

13. Line Terminators ...8

14. Signal Processing Locations ...9

15. Coaxial Cables ...9

16. Optical Power Symbols...10

17. Splice Locations, Optical...11

18. Miscellaneous, Optical...11

19. Data Blocks ...12

(4)

GRAPHIC SYMBOLS FOR CABLE TELECOMMUNICATIONS SYSTEMS

Introduction

Basic Considerations

The symbols for devices do not indicate types or model numbers of any manufacturer. They

represent the function of the device operated within a CATV system. The symbols permit easy

addition of model or type numbers within or near their outline. If such model or type designations

are used, an explanation of these designations should be placed on a legend sheet for the drawing

on which the symbols appear.

Proposed Drafting Practices

•The orientation of a symbol on a drawing, including a mirror image presentation, does not alter

the meaning of the symbol.

•Line width does not affect the meaning of a symbol. In specific cases, a wider line may be used

for emphasis. Generally, lines must be made sufficiently wide to avoid loss of resolution during

photocopy reduction.

•Symbols shown in this text are in the approximate correct size and proportion. This relationship

should be maintained as nearly as possible on any particular drawing regardless of the symbol

scale.

•Symbols may be drawn to any proportional size that suits a particular drawing, depending upon

reduction or enlargement anticipated. If essential for purposes of contrast, some symbols may be

drawn relatively smaller than the other symbols on a drawing. The Standard recommends the use

of no more than two sizes on a given drawing.

•For simplification or clarification of a drawing, parts of a symbol for devices, such as amplifiers,

may be separated. If this is done, suitable designations to show proper correlation of the parts

must be provided.

The Symbols

Due to the necessary crowding of symbols onto CATV mapping and grid diagrams, some symbols

are structured differently than those used in electrical and electronic diagrams.

(5)

RISER POLE

OTHER SUPORTING TYPE STRUCTURES

CONCRETE POLE

STEEL POLE

FIBER REINFORCED POLE

DROP POLE

TRANSMISSION LINE CONTACT

POWER TRANSFORMER PLATFORM

Use of a number indicates vertical distance from serial connection to ground level.

Show approximate structure outline or a portion thereof in this manner.

NOTES:

ownership are the same. For modification, a designation may be shown adjacent to the pole symbol. Unless otherwise specified, the standard considers wooden poles.

POWER TRANSFORMER POLE

(alternate)

Add "DP" by any pole

(alternate)

In this section, riser and drop poles are shown as joint use because this occurs most frequently.

1. POLES

The Standard states that unless otherwise specified on drawings or referenced documents, pole usage and

POWER POLE

TELEPHONE POLE

JOINT USAGE

(power and telephone pole)

JOINT USE WITH POWER TRANSFORMER

CATV POLE

(6)

2. CABLE SUPPORT ELEMENTS

In this section, poles are shown as joint because this occurs most frequently.

EXTENSION ARM

(used by CATV)

TENSION STRAND

SLACK SPAN STRAND

In this section, poles are shown as joint use because this occurs most frequently. the pole it is bracing.

DOWN GUY WITH ANCHOR

" " symbol added to anchor symbol indicates "Set Anchor."

Set CATV Anchor Existing CATV Anchor -NOTES:

3. ANCHORING AND GUYING

PUSH BRACE

To show a push brace, the support pole is a smaller symbol. It shall be drawn in its actual supporting location relative to

OVERHEAD GUY MID-SPAN CROSSOVER

POLE-TO-POLE GUY

SIDEWALK DOWN GUY WITH ANCHOR

TREE GUY

ROCK GUY

BUILDING GUY

Existing CATV Anchor Set CATV Anchor

-NOTES:

" " symbol added to anchor symbol indicates "Set Anchor."

(7)

4. MISCELLANEOUS SYMBOLS

BOND GROUND B LOCKBOX

5. UNDERGROUND DESIGNATIONS

UNDERGROUND ROUTING

Tick marks represent length dividers. " * " = Optional user defined attribute

DIRECT BURIED CONDUIT ROUTING

PEDESTAL (alternate) MANHOLE (alternate) VAULT HANDHOLE (alternate) ROAD BORE

(solid portion with slashes)

EXISTING POWER TRANSFORMER

* *

" * " = Optional user defined attribute NOTES:

(8)

6. HOUSE DROP DESIGNATIONS

" * " = Optional user defined attribute

HOUSE COUNT

The numeral indicates the number of actual house

The numeral indicates the number of dwelling units.

MULTIPLE DWELLING UNITS

INSTITUTIONAL BUILDING

Designated appropriately as to the type of building or service. (school, church, police, fire, etc.)

# # * (alternate) # # COMMERCIAL COUNT #

The numeral indicates the number of actual commercial The numeral on top indicates number of actual drops. The numeral on bottom indicates number of potential

7. MAKE READY OR POLE LINE PREPARATION

Arrangement of existing equipment on the pole must be altered for CATV installation.

*

MAKE READY

drops at this location.

NOTES:

drops at this location.

house drops.

" * " = Optional user defined attribute NOTES:

(9)

*

Indoor drop splits may have additional user defined symbols.

(alternate)

* *

angular half of the symbol.

inside symbols. The high loss leg leaves from the *Model or value designations are to be shown adjacent or

DIRECTIONAL COUPLER

Dot shows high output leg, if unbalanced.

3-WAY SPLITTER 2-WAY SPLITTER

9. SPLITTING DEVICES

NOTES:

Examples shown are for guidance (not standard). " * " = Optional user defined attribute or graphics

LINE EXTENDER Input Output

Output *

Input

MULTIPLE OUTPUT AMPLIFER

*

Output Input

NOTES:

8. AMPLIFIERS

(10)

PS name, status monitor, port numbers.

Additional graphics such as a circle around the symbol may also be used to designate new/existing locations. " * " = Optional information: voltage, current load,

*

NOTE:

"SB" = Stand By

" * " = Optional information: voltage, current load, PS name, status monitor.

* SPLICE (alternate) * (alternate) * IN-LINE EQUALIZERS

" * " = Optional user defined attribute or graphics NOTES:

11. LINE DEVICES

" * " = Optional user defined attributes

"SB" = Stand By

*

(alternate)

*

CENTRALIZED POWER SUPPLY

*

NON-SB POWER SUPPLY

*

SB POWER SUPPLY AC POWER INSERTER AC POWER BLOCK

PS name, status monitor.

" * " = Optional information: voltage, current load,

(11)

Indoor taps may have additional user defined symbols.

Self-terminating tap may be shown without symbol.

#

Applies to lowest value tap within any family group.

8-OUTPUT DIRECTIONAL TAP 4-OUTPUT DIRECTIONAL TAP 3-OUTPUT DIRECTIONAL TAP 2-OUTPUT DIRECTIONAL TAP

* #

" * " = Represents value of pad, cable equalizer, addressable or telephony tap

# RF TERMINATOR

13. LINE TERMINATORS

* * * * # #

1-OUTPUT DIRECTIONAL TAP

# #

" # " = Represents value of tap NOTES:

12. SUBSCRIBER TAPS

(4-output tap shown for example only)

SELF-TERMINATING TAP

(12)

(Examples)

For specialty cables and cables listed in ANSI/SCTE 15, 2001

750P3

0.750 INCH P3

OPTIONAL CABLE SYMBOLOGY

TYPICAL CABLE SYMBOLOGY

In multi-level networks, a signal processing location connected between the primary hub and the node.

0.412 INCH (10.5MM) 0.500 INCH (12.7MM) 0.625 INCH (15.9MM) 0.750 INCH (19.1MM) 0.875 INCH (22.2MM) 1.000 INCH (25.4MM)

15. COAXIAL CABLES

WIRELESS HUB * *

In multi-level networks, a signal processing location connected between the headend and secondary hubs or nodes.

Location where the highest level of signal processing takes place.

" * " = Optional user defined attributes

HEADEND

SECONDARY HUB PRIMARY HUB

NOTES:

(13)

" * " = Input optical power " ** " = Output RF level 2 4 3 1 (examples) * * * OPTICAL NODE * **

" ** " = Output optical power " * " = Input RF level OPTICAL TRANSMITTER inputs "*" = Indicates number of MULTIPLEXER * outputs * "*" = Indicates number of DEMULTIPLEXER * OPTICAL AMPLIFIER

"*" = Indicates the gain (dB)

16. OPTICAL DEVICES

2 1 3 4 A B C D

(14)

" * " = Indicates footage stamp number

FIBER FOOTAGE/SEQUENTIAL MARKER

(Aerial to/from UG)

" * " = Indicates footage stamp number

FIBER SHEATH TRANSITION

to be added as necessary

#

OPTICAL FIBER CABLE

" # " = Indicates the fiber count

" * " = Connector type

*

"*" = Denotes user defined attributes

OPTICAL STORAGE LOOP

### # # # # (alternate) "#" = Percent or dB loss SPLITTER

Symbol shown with optional outputs

*

CONNECTOR

18. MISCELLANEOUS OPTICAL SYMBOLS

MID-ENTRY SPLICE / RING CUT >4-WAY SPLICE

4-WAY SPLICE 3-WAY SPLICE 2-WAY SPLICE

17. OPTICAL SPLICE SYMBOLS

"* " = Denotes user defined attributes

*

Symbol--> Symbol-->

*

(15)

19. DATA BLOCKS

NOTES:

SUGGESTED STYLES

- Low Analog Signal - AC Voltage - High Analog Signal - High Digital Signal

20. END OF LINE BLOCKS

The size, shape, and rotation of the identification box is at the discretion of the designer. Information normally appearing includes:

- Amplifier Number

- Power Supply Number and Power Feed - AC Voltage

- Amplifier Cascade

- Amplifier Output at Design Frequency - Amplifier Input at Low Forward Channel - Forward Equalizer

- Forward Pad

- Reverse Output Level - Reverse Input Level - Reverse Equalizer - Reverse Pad

- Amplifier Part Number - Footage to Previous Amplifier (scale to fit maps)

- Passings Served by Active

The size, shape, and rotation of the identification box is at the discretion of the designer. NOTES:

(scale to fit maps)

Information normally appearing includes:

References

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