Olson Technology OTOHP-RRX User Manual

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Page 1

OPTICAL HEADEND PLATFORM

OTOHP-RRX QUAD REVERSE

RETURN PATH RECEIVER

INSTRUCTION MANUAL

Phone: (209) 586-1022

(800) 545-1022

Fax: (209) 586-1026

E-Mail: [email protected]

OTOHP-RRX Rev. X1 11/16/2010

www.olsontech.com

Page 2

SAFETY WARNINGS

LASER RADIATION

The opticalfiber connectorattached tothe OTOHP-RRXreceiver emitsinvisible radiationthat can cause permanent eye damage. . Operate the receiver only with the proper optical fiber installed in the receiver optical connector. Power to the receiver should be turned-off or preferably, disconnected whenever the optical connector cover is opened and there is no installed fiber (as when the fiber connector is being installed or removed from the transmitter connector).

NEVER

USEANY OPTICAL INSTRUMENT TO VIEWTHE OUTPUT OF THEOPTICAL FIBER

OR CONNECTOR “OPTICAL INSTRUMENT”INCLUDES MAGNIFYINGGLASSES, ETC.

NEVER

LOOK INTO THE OUTPUT OF THE CONNECTOR TO BE ATTACHED TO THE

RECEIVER

NEVER

LOOK INTO THE OUTPUT OF A FIBER CONNECTED TO A LASER

TRANSMITTER.

NEVER

LOOK INTO OR USE ANY OPTICAL INSTRUMENT TO VIEW THE DISTANT END OF A FIBER THAT MAY BE CONNECTED DIRECTLY OR VIAAN OPTICAL SPLIT, TO A TRANSMITTER THAT MAY BE OPERATING. THIS SPECIFICALLY APPLIES TO FIBERS THATARE TO BE CONNECTED TO RECEIVERS OR OTHER DEVICES AT ANY DISTANCE FROM THE LASER TRANSMITTER.

AVOID DIRECT EXPOSURE TO BEAM

PRECAUTIONS

Failure to comply with these general safety precautions and with the specific precautions described elsewhere inthis manual violates the safety standards of the design, manufacture, and intended useof the device. OlsonTechnology Inc. assumesno liabilityfor thecustomer's failure to comply with theseprecautions.

Do not operate the receiver outside of its ratings. Doing so may result in unsatisfactory performance, receiver failure,shortened receiver life span,or asafety hazard.

Do not attempt to modify or service any part of a receiver module. Doing so voids the warranty. Return the unitto OlsonTechnology Inc.forservice andrepair.

Do not restrict airflow in front of or behind the chassis. The receiver should be operated in an ambient environment between0 and 50ºC (32and 122ºF).

Store the moduleaway from corrosivematerials, at a temperaturebetween -40 and +70ºC(-40 and +158ºF), and withno more than 85%humidity, non-condensing.

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INTRODUCTION

The Olson Technology, Inc. Model OTOHP-RRX is aquad return path receiver module optimized for good performance over a wide range of optical levels. This low-noise receiver converts upstream optical signals into RF signals at the headend or remote hubs. Internal selectable RF attenuators can be switched in or out to enable each receiver to handle a very wide range of optical input signals. The module features four completely independent receivers with four RF output ports, which are located on the rear panel.The OTOHP-RRX provides +45dBmV output level. The front panel controls allow local management and monitoring of the module while the RS-485 interface and the OTOHP-NMS network management module allow remote management and monitoring of themodule.

OPERATION PANEL DESCRIPTION

5 7 9

1615

1817

1. Display LED:

2. STA LED:

2 3 4

6 8

Display the status,MGC value andalarm code ofthe receiver.

Green indicates the module is operating properly. Red indicates the

module has alarms.

3. MGC LED: interface

Green indicates the module is operating under MGC operation

4. TP LED: Greenindicates the module isworking under “TP”operation interface

5. ALM LED: When green, the OTOHP-RRX module is working under “ALM” operation interface.

6. Up: Push button selects function orparameter setting.

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OPERATION PANEL DESCRIPTION (CONT.)

7. Down:

8 Set:

9. Exit:

10 Handle: Used tohandle the modulewhen being installedor uninstalled 11 Heat dissipation hole:Air flowout of theseholes dissipates theheat. 12 TP: 13 Thumbscrew: Fixes themodule to thechassis.

14. 30-pin Connector:

Push button, selectfunction or parametersetting.

Push button, confirm function or parametersetting selection.

Push button, exitcertain operation mode

Test pointfor RFoutput, -20dB,F typemale connector

.. .

Provides power andsignals tothe chassis backplane connector

typeismale.

15. Optical InputPort: Portfor opticalinput, connectortype isSC/APC.

16. Optical InputPort: Portfor opticalinput connector type is SC APC.

17. Optical InputPort: Portfor opticalinput connector type is SC APC.

18. Optical InputPort: Portfor opticalinput connector type is SC APC.

19. RF InputPort: Portfor RFinput connector type is F female.

20. RF InputPort: Portfor RFinput connector type is F female.

21. RF InputPort: Portfor RFinput connector type is F female.

22. RF InputPort: Portfor RFinput connector type is F female.

,/ ,/

,/ ,,,,-

INSTALLATION

1 Inspect for bent pins on the backplane connector at the rear of the module

Straighten any bent pins before installingthe module

2 Gently insert each module into a slot in the front of the chassis Be careful to align

the metal guide rails on the top and bottom of the module with the nylon guides in the interiorof the chassis housing

3. Tighten the captive thumbscrewon the front of the module

CAUTION: Using mismatched optical connectors will damage the connectors and degrade system performance. Ensure that each fiber has a matching connector.

4. Repeat Steps1 through 3 to install the remaining modules inthe chassis

5. Use an optical power meter to verify that the optical input level on specification value.

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INSTALLATION (CONT.)

Note: If the power supply turns on after the OTOHP-RRX reverse return path receiver is inserted, the Display LED will flash for 5 seconds, and indication the receiver is selfchecking.

6 Verify that the correct optical connectorwill be attached to the optical connectoron

the module. Cleanboth the bulkheadand fiber connectors.

7. Connect the opticalfibers to theappropriate OPT INadapter onthe rear panel.

8. Connect the RFcord to theappropriate RF OUTconnector onthe rear panel.

9. Push the SET button and set the RF TP channels. Using a signal level meter, measure the RFoutput at theRF TP testpoint (20dB belowactual level) onthe front panel and verify that it is set at the specified value for that channel. Further adjust the RF outputlevel if requiredusing MGC function.

FRONT PANEL NUMERIC DISPLAY OPERATION DESCRIPTION

First pushSET on the LED display and set function.

A01: MGC setting menu A02: Test Port selection menu

SET

A03: Alarm menu

A0001

SET

OFF

SET

EXIT

to set

Port 1 to Port 4

Push , and

SET to set the

attenuation

(-20 to 0dB)

A02

SET

Push , and SET to select

the Port.

A0003

SET

EXIT

Push and

to view

the alarm code.

xPush and

EXIT

Page 6

UNINSTALL THE RECEIVER MODULES

DANGER: Laser Radiation—Avoid direct exposure to beam. Inbound laser radiation associated with this optical input jumper may be generated by a Class IIIb laser product. Disconnected optical connectors might emit invisible opticalradiation. Laser light, visible or invisible, canseriously injure eyes andeven causeblindness.

1 Disconnect the optical fiber s from the rear panel of the receiver. Immediately

.()

place protective caps over the bulkheadand fiber connector

2 Disconnect theRF cables from the F connectors

.-.

3. Loosen the thumbscrew on the front panel of the module CAUTION: Do not pull

on the thumbscrew to remove the module. Pull onthe handle that the thumbscrew goes through toremove the module.

4. Gently pull the module from the chassis using the handle that the thumbscrew goes through

ALARM DEFINITIONS

First pushSET into LED display and set function.

Displayed Message

000 001 002 003 004 005 006 007 008 009

Alarm Status

No alarm

Optical input low for Port 1

Optical input high for Port 1

Optical input low for Port 2

Optical input high for Port 2

Optical input low for Port 3

Optical input high for Port 3

Optical input low for Port 4

Optical input high for Port 4

Module temperature high

System Response

STA LED is green STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red STA LED turns to red

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TROUBLESHOOTING

When the Status light is red the operator canuse the “ ” “ ” and “SET” push button

,▲,▼

switch to check the alarms. DANGER/CAUTION: Do not remove the cover of the receiver or attempt to modify any part of it under any circumstances. Removing the cover could causeirreparable damage tothe unit, andwill void yourwarranty.

Problem

Steps to Take

Status (STA) LED is lit red.

No RF power at the RF output port(s).

RF output power is lower than the required amount.

1. Verify the opticalinput power rangeis 0 to-18dBm.

2. If all is normal, contact Olson Technology Inc. for further troubleshooting.

1. Clean theoptical connector.

2. Verify the optical input power using an optical power meter.

3. Try to adjustthe RF outputthrough MGC function.

4. Measure RFpower at outputport.

5. If there is no RF power at the output port, the unit must be returnedto the factoryfor service.Contact Olson TechnologyInc. for moreinformation.

1. Ensure alloptical connectors areclean.

2. Verify the cable is terminated with the correct connector type.

3. Verify that the optical input power is within the normal range.

4. Try to adjustthe RF outputthrough MGC function.

5. Measure RFpower at outputport.

6. If the RF output power is still low, the unit must be returned to the factory for service. Contact Olson Technology Inc.for moreinformation.

Page 8

SPECIFICATIONS

Optical Characteristics (with SM 9/125µm Fiber)

Min Typ Max Units

Operating Wavelength 1260 1620 nm Optical Input Power -18 0 dBm Optical Return Loss -40 dB Optical Input Ports 4 Optical Connector SC/APC

RF Output & Performance Characteristics

Min Typ Max Units

Frequency Range 5 200 MHZ Band Flatness -0.75 +0.75 dB

RF Output Return Loss 18 dB Output Level +45 dBmV

RF Attenuation Range 0 +20 dBm Impedance 75 Ohms CNR 50 dB

IMD2 -55 dB

IMD3 -60 dB

RF Test Point -20.75 -20 -19.25 dB RF Connectors F-female

Electrical & Environmental Characteristics

Min Typ Max Units Operating Temp. Range 0 +50 °C Storage Temp. Range -40 +65 °C Relative Humidity 5 95 % P. S. Voltage +24 V

Power Consumption 10 W

NOTES:

1) Band flatness is over a 5-200MHz range.

2) Received optical power of

-7dBm with 16% OMI per channel, 0dB attenuation setting.

3) +45dBmV output, two-tone test, f =13MHz, f =19MHz.

4) Non condensing.