Cisco Compact EGC 93250, Compact EGC 93251, 93250, 93251 Installation And Setup Instructions

Compact EGC Amplifier 93250 and 93251
Installation and Setup Instructions

Application

The Compact Amplifier type 93250/93251 has one active output and is used in trunk
and distribution applications. The amplifier can be monitored via the compact
transponder and the ROSA™ Element Management System. All equalizers and pads
are electronic and can be set with the handheld terminal type 91200. The plug-in
filters in the reverse path allow flexible choice of frequency range for both forward
and reverse path.

Figure 1: Amplifier overview

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Important Safety Instructions

WARNING:

To reduce risk of electric shock, perform only the instructions that are
included in the operating instructions. Refer all servicing to qualified service
personnel only.

Read and Retain Instructions

Carefully read all safety and operating instructions before operating this equipment,

Follow Instructions and Heed Warnings

Terminology

and retain them for future reference.

Follow all operating and use instructions. Pay attention to all warnings and cautions
in the operating instructions, as well as those that are affixed to this equipment.

The terms defined below are used in this document. The definitions given are based
on those found in safety standards.

Service Personnel - The term service personnel applies to trained and qualified
individuals who are allowed to install, replace, or service electrical equipment. The
service personnel are expected to use their experience and technical skills to avoid
possible injury to themselves and others due to hazards that exist in service and
restricted access areas.

User and Operator - The terms user and operator apply to persons other than service
personnel.

Ground(ing) and Earth(ing) - The terms ground(ing) and earth(ing) are synonymous.
This document uses ground(ing) for clarity, but it can be interpreted as having the
same meaning as earth(ing).

Electric Shock Hazard

This equipment meets applicable safety standards.

Electric shock can cause personal injury or even death. Avoid direct contact with
dangerous voltages at all times.

Know the following safety warnings and guidelines:

 Only qualified service personnel are allowed to perform equipment installation or

replacement.

 Only qualified service personnel are allowed to remove chassis covers and access

any of the components inside the chassis.

Continued on next page

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Important Safety Instructions, Continued

WARNING:

Avoid personal injury and damage to this equipment. An unstable mounting
surface may cause this equipment to fall.

WARNING:

Avoid the possibility of personal injury. Ensure proper handling/lifting
techniques are employed when working in confined spaces with heavy
equipment.

Equipment Placement

To protect against equipment damage or injury to personnel, comply with the
following:

 Install this equipment in a restricted access location (access restricted to service

personnel).

 Make sure the mounting surface or rack is stable and can support the size and

Pedestal, Service Closet, Equipment Room or Underground Vault Installation

weight of this equipment.

 Ensure this equipment is securely fastened to the mounting surface or rack where

necessary to protect against damage due to any disturbance and subsequent fall.

 Ensure the mounting surface or rack is appropriately anchored according to

manufacturer’s specifications.

 Ensure the installation site meets the ventilation requirements given in the

equipment’s data sheet to avoid the possibility of equipment overheating.

 Ensure the installation site and operating environment is compatible with the

equipment’s International Protection (IP) rating specified in the equipment’s data

sheet.

Connection to Network Power Sources

Refer to this equipment’s specific installation instructions in this manual or in
companion manuals in this series for connection to network ferro-resonant AC
power sources.

Continued on next page

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Important Safety Instructions, Continued

CAUTION:

RF connectors and housing seizure assemblies can be damaged if shunts are
not removed from the equipment before installing or removing modules from
the housing.

WARNING:

Avoid electric shock! Opening or removing this equipment’s cover may
expose you to dangerous voltages.

CAUTION:

These servicing precautions are for the guidance of qualified service
personnel only. To reduce the risk of electric shock, do not perform any
servicing other than that contained in the operating instructions unless you
are qualified to do so. Refer all servicing to qualified service personnel.

AC Power Shunts

AC power shunts may be provided with this equipment.

Important: The power shunts (where provided) must be removed before installing
modules into a powered housing. With the shunts removed, power surge to the
components and RF-connectors is reduced.

Equipotential Bonding

If this equipment is equipped with an external chassis terminal marked with the IEC

60417-5020 chassis icon ( ), the installer should refer to CENELEC standard EN
50083-1 or IEC standard IEC 60728-11 for correct equipotential bonding connection

General Servicing Precautions

instructions.

Be aware of the following general precautions and guidelines:

 Servicing - Servicing is required when this equipment has been damaged in any

way, such as power supply cord or plug is damaged, liquid has been spilled or
objects have fallen into this equipment, this equipment has been exposed to rain or
moisture, does not operate normally, or has been dropped.

 Wristwatch and Jewelry - For personal safety and to avoid damage of this

equipment during service and repair, do not wear electrically conducting objects
such as a wristwatch or jewelry.

 Lightning - Do not work on this equipment, or connect or disconnect cables,

during periods of lightning.

 Labels - Do not remove any warning labels. Replace damaged or illegible warning

labels with new ones.

Continued on next page

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Important Safety Instructions, Continued

 Covers - Do not open the cover of this equipment and attempt service unless

instructed to do so in the instructions. Refer all servicing to qualified service
personnel only.

 Moisture - Do not allow moisture to enter this equipment.
 Cleaning - Use a damp cloth for cleaning.
 Safety Checks - After service, assemble this equipment and perform safety checks

Electrostatic Discharge

to ensure it is safe to use before putting it back into operation.

Electrostatic discharge (ESD) results from the static electricity buildup on the human
body and other objects. This static discharge can degrade components and cause
failures.

Take the following precautions against electrostatic discharge:

 Use an anti-static bench mat and a wrist strap or ankle strap designed to safely

ground ESD potentials through a resistive element.

 Keep components in their anti-static packaging until installed.
 Avoid touching electronic components when installing a module.

Fuse Replacement

To replace a fuse, comply with the following:

 Disconnect the power before changing fuses.
 Identify and clear the condition that caused the original fuse failure.
 Always use a fuse of the correct type and rating. The correct type and rating are

indicated on this equipment.

Modifications

This equipment has been designed and tested to comply with applicable safety and
EMC regulations, codes, and standards to ensure safe operation in its intended
environment. Refer to this equipment's data sheet for details about regulatory
compliance approvals.

Do not make modifications to this equipment. Any changes or modifications could
void the user’s authority to operate this equipment.

Modifications have the potential to degrade the level of protection built into this
equipment, putting people and property at risk of injury or damage. Those persons
making any modifications expose themselves to the penalties arising from proven
non-compliance with regulatory requirements and to civil litigation for
compensation in respect of consequential damages or injury.

Continued on next page

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Important Safety Instructions, Continued

Accessories

Use only attachments or accessories specified by the manufacturer.

Electromagnetic Compatibility Regulatory Requirements

This equipment meets applicable electromagnetic compatibility (EMC) regulatory
requirements. Refer to this equipment's data sheet for details about regulatory
compliance approvals. EMC performance is dependent upon the use of correctly
shielded cables of good quality for all external connections, except the power source,
when installing this equipment.

 Ensure compliance with cable/connector specifications and associated installation

instructions where given elsewhere in this manual.

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Installation Instructions

Mounting

The amplifier should be mounted vertically with the cable input underneath, to secure
best possible operating temperature conditions. Use a 4 mm Allen key to tighten the
screw in the lid to 5 Nm.

The pin length of the PG 11 cable connector at input and output is shown on the
cover plate of the amplifier. If needed, trim the connector with wire cutters.

Please Notice

This product can only be setup with a handheld terminal type A91200.11 or with a
handheld terminal type A91200.10 containing the necessary driver for the EGC
amplifier. New drivers can be installed by means of download kit A91210.10.

Plug-in Units

The following plug-in units are necessary.

 Input splitter. Link type 74089 is applied if the loop port is not used.
 Output splitter. If an asymmetric splitter (bridger) is used, the largest

attenuation at the output 2 (OUT 2) is obtained. If only a signal at output 1
(OUT 1) is requested, link type 74069 is used.

 Diplex filter. Two diplex filters type 75130 with the required split frequency.

Use two links type 74089 if the reverse path not is used.

 Plug-in reverse equalizer type 74141 with the required filter frequency.

Determines the frequency range for the built-in active reverse path.

 AUX plug-in field. In order to adjust the amplifiers to the cable, it may be

necessary to insert an equalizer type 74100-xxx at the input. Alternatively an
inverse equalizer type 74190-xx or attenuator type 77150-xx can be used.
If no equalization/attenuation is requested, insert 0 dB link type 74069.

Continued on next page

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Installation InstructionsInstallation Instructions, Continued

DC

DC

230 V AC

AC or DC in

TX

RX

0-18 dB 0-18 dB

0-15 dB

-20dB
TP

-20dB
TP

-20dB
TP

IN OUT

OUT 2 OUT 1



0-15 dB

-20dB
TP

0-6 dB

-20dB

-33dB

0-18 dB

AUX

Rev.Eq.

0-20 dB

µ-

Controller

Transponder

20/25 dB

Figure 2: Block diagram for the amplifier type 93250/93251

Power Supply

230 V Mains Supply

The amplifier has factory mounted mains cable and plugs, which according to
approval provisions may not be altered. The power unit is double insulated, and
supplies only this single amplifier. When the power unit DC voltage indicator lights,

Remote Supply 24 to 65 V AC

the power unit is supplying correct DC voltage.

The amplifier can be supplied with 24 to 65 V AC either via coaxial cables (max. 8 A)
or directly to the AC input (max. 15 A). In this case, the network AC supply
apparatus shall be certified to provide basic insulation between the utility mains
supply and the network AC supply voltage in accordance with an applicable safety
standard such as IEC 60065, IEC 600950-1 or equivalent and local electrical
regulations.

Continued on next page

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Installation InstructionsInstallation InstructionsInstallation Instructions,

Continued

AC Pass

On delivery, ports are provided with insulating fuses. Desired AC pass is obtained
by turning the fuse holder after connecting the cable or before disconnecting, to
prevent damage of cable connectors.

Caution:

Permanent excess of maximum remote current may cause damage.

Low Voltage Lockout

For all coax line powered power supplies an undervoltage switch type 75018-xx can
be delivered that switches off the power supply if the voltage drops below the rated
value (24 V or 35 V) thus, the network is not damaged due to increased current
consumption.

Setting up the amplifier

The handheld terminal type 91200 is used to set up the amplifier. Use the menu
structure in the following table to navigate through the different menus.

Shortcuts

Use the short cuts shown on the cover plate to do a fast selection of the required
menu.

For example: The output equalizer is marked with 5. By pressing the button ”5” for
approximately 1 sec. the terminal jumps to the menu where the output equalizer can
be is changed.

The menu numbers can also be used as short cuts. Refer to the following menus
structure (Fig. 3) to determine the number for the required menu.

For example: Press ”35” and the handheld terminal will jump to the menu where the
reverse switch can be set.

Continued on next page

OL-30194-01 9

or

*

Is used to navigate to the
submenus and to open a menu
for editing. The value can then
be changed. Additionally, the
button can be used to reject a
value entered by the keypad.

or

*

Is used to navigate to the root
menus and to delete wrong
digits when a menu is open
for editing. Additionally, the
button can be used to reject a
value entered by the keypad.

• 0

-

4 5 6

1 2 3

8 97

All numbers, ”.” and ”-” are
used to enter values. The
numbers can also be used as
short cuts.

Is used to navigate through
menus at the same level and to
select the settings in some
menus. Additionally, these
buttons can be used to fine­tune some values.

E
N
T
E
R

*

Is used to confirm a setting or
a change.

In the menu ”Copy Parameters,” the
setting of an amplifier can be saved
(menu 51) and downloaded to another
amplifier (menu 52).

Remote Supply
41 Not Connected

Model Number
61 A93240.10238

Input EQ
21 + 5.0 dB

Copy Parameters
5

Forward Gain
11 28 dB

Configuration
1 Rv 25dB

Reverse
3

Forward
2

Forward Freq.
12 862 MHz

Input Att
22 + 5.0 dB

Rev. Input Att 1
31 + 5.0 dB

From Product
51

To Product
52

Supply
4

Identification
6

Restore Default
53

Interstage Att
23 + 5.0 dB

Serial Number
62 000423F0434

Time in Service
63 2 days

Software ID
64 7003460-A

Terminal SW
65 530445

Rev. Input Att 2
32 + 5.0 dB

Rev. Output Att
33 + 5.0 dB

Rev. Output EQ
34 + 5.0 dB

Rev. Switch
35 0 dB

Transponder
66 OK

Lid Status
67 Open

Configuration
1 Fw 40dB/862M

Reverse Gain
13 25 dB

Toggling

Interstage Att 2
24 + 5.0 dB

Output EQ
25 + 5.0 dB

Not avaiable for
this amplifier

**

**

**

*

*

* A91200.10

DC Supply
42 0.0 V

Installation InstructionsInstallation Instructions, Continued

Or use the following buttons:

10 OL-30194-01

Figure 3. Menu Structure

Continued on next page

Installation InstructionsInstallation Instructions, Continued

SMC ID

Transponder address

1 to 65535

TX FREQ

Transmit frequency

5 to 65 MHz

RX FREQ

Receive frequency

45 to 174 MHz

TX LEVEL

Transmit level

84 to 110 dBµV

BAUD RATE

Data speed

9.6-19.2-38.4 kbps

MODE

Transponder mode

IEP

Fuse type

Description

T3.15H250V

3.15AT, for 230 V AC

T5AH250V

5AT, for 24 to 65 V

T10AL250V

10 AT, for input/output port

ROSA Element Management System

Monitoring of the amplifier requires the installation of the transponder type 91051 in
the amplifier. This transponder will communicate back to the headend by means of
the reverse path. The transponder signal is received at the test point at output. Refer
to Fig. 2. The level measured by the transponder will be attenuated by
approximately 33 dB relative to the output signal at output. The transponder
transmitter level is adjusted to the same level as the other reverse signals. The level
from the transponder will be attenuated by approximately 20 dB at the reverse path
since it is inserted with a 20 dB coupler.

With a transponder it is possible to monitor and control different parameters in the
amplifier. As seen in Fig. 2, the built-in reverse path switch can be controlled in
order to locate ingress noise in the reverse path. This can be useful in the search for
errors in larger networks.

Programming of a Compact Transponder type 91051 is done by using the handheld
terminal 91200.

The transponder can be set with:

Accessories

Test adapter, F type A71004

Fuses

Notes: All fuses must be replaced by a similar type.

OL-30194-01 11

For Information

Region

Centers

Customer Service Numbers

North America

USA

 Toll-free: 1-800-722-2009

Europe, Middle East, Africa

Belgium

 Telephone: [phone] or 32-56-445-118

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Japan

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Korea

Korea

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China (mainland)

China

 Telephone: [phone]

Other Asia-Pacific countries, Australia

Hong Kong

 Telephone: [phone]

Brazil

Brazil

 Telephone: [phone], ext 109

Mexico, Central America, Caribbean

Mexico

 Telephone: [phone]

All other Latin America countries

Argentina

 Telephone: [phone]

Americas Headquarters

Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA

http://www.cisco.com

Tel: [phone]

800 553-6387

Fax: [phone]

This document includes various trademarks of Cisco Systems, Inc. Please see the Notices
section of this document for a list of the Cisco Systems, Inc. trademarks used in this document.

Product and service availability are subject to change without notice.

© 2008, 2013 Cisco and/or its affiliates. All rights reserved.

August 2013

Part Number OL-30194-01

If You Have Questions

12 OL-30194-01