Olson Technology OTOHP-FRX User Manual

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Page 1

OPTICAL HEADEND PLATFORM

OTOHP-FRX FORWARD RECEIVER WITH REDUNDANT

INPUTS

INSTRUCTION MANUAL

Phone: (209) 586-1022

(800) 545-1022

Fax: (209) 586-1026

E-Mail: [email protected]

OTOHP-FRX Rev. X1 11/16/2010

www.olsontech.com

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SAFETY WARNINGS

LASER RADIATION

The optical fiber jumper attached to the OTOHP-FRX receiver carries invisible radiation that 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

USEANYOPTICALINSTRUMENT TOVIEWTHEOUTPUTOFTHE OPTICALFIBER

OR CONNECTOR “OPTICAL INSTRUMENT” INCLUDESMAGNIFYINGGLASSES,ETC.

NEVER

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

RECEIVER

NEVER

LOOK INTO THE OUTPUT OF A FIBER CONNECTED TOA 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 SPECIFICALLYAPPLIES TO FIBERS THATARE TO BE CONNECTED TO RECEIVERS OR OTHER DEVICES ATANY 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 in this manual violatesthe safetystandards ofthe design manufacture and intended use of the device Olson Technology Inc assumes noliability for thecustomer's failure to comply with these precautions.

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

Do not attempt to modify or service any part of a receiver module. Doing so voids the warranty. Contact Olson for an RMA number and Return the unit to Olson Technology Inc. for service and repair.

Do not restrict airflow in front of or behind the chassis. The receiver should be operated in an ambient environment between 0 and 50ºC (32 and 122ºF).

Store the module awayfrom corrosivematerials,at a temperature between -40 and +70ºC (-40 and +158ºF), and with no more than 85% humidity,non-condensing.

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INTRODUCTION

The Olson Technology, Inc. Model OTOHP-FRX is a High-performance forward receiver with dual redundant optical inputs for maximum reliability.The SC/APCoptical inputs are referredtoas Port 1 andPort2. Port 1is the primary optical input Port 2isthe

backup optical input. The OTOHP-FRX receiver is designed to operate with Olson Technology’s OHP ( ptical eadend latform) series of products. Internal RF

OH P attenuators can be used in manual orAGC mode to adjust the RF output over a 20dB range. The OTOHP-FRX provides +35dBmV per channel 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 ofthemodule.

OPERATION PANEL DESCRIPTION

2 3 4

6 8

5 7 9

1. Display LED:

2. STA LED:

Display thestatus MGC value and alarm code of the receiver.

Green indicates the module is operating properly. Red indicates the

module has alarms.

3. AM-LD LED:

indicates themodule is operating under MGC

4. A-B LED: Green indicates that the unit is orking in A channel. No light indicates

Green indicates the module is operating under AGC No light

that the unit isworking in Bchannel.

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

operation interface.

6. Up: Push button selects functionor parametersetting.

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OPERATION PANEL DESCRIPTION (CONT.)

7. Down:

8 Set:

9. Exit: 10 Handle: Used tohandlethemodule when being installed oruninstalled 11 Heat dissipation hole:Air flowoutofthis hole dissipates theheat. 12 TP: 13 Thumbscrew: Fixes the moduleto thechassis.

14. 30-pin Connector:

15. Optical InputPort: Port foroptical input connector type is SC APC.

16. Optical InputPort: Port foroptical input connector type is SC APC.

17. RF InputPort: Port forRF input connector type isF female.

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

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

3. Tighten the captive thumbscrew on the frontof 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 remainingmodules in the chassis

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

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

6 Verify that the correct optical connector will be attached to the optical connector on

7. Connect the optical fiberstotheappropriate OPT IN adapter onthe rearpanel.

8. Connect the RF cordtotheappropriate RF OUT connector on therearpanel.

Push button selects function orparameter setting.

Push button confirm function orparameter setting selection.

Push button exit certainoperation mode

Test point for RFoutput, -20dB F type maleconnector

connector type is male.

Straighten anybent pins before installing the module

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

value.

the module. Clean boththebulkheadand fiber connectors.

Provides power and signals to the chassis back plane

INSTALLATION

,/ ,/

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INSTALLATION (CONT.)

9. Push SET button, Set RF TP Channels as described below. Using a signal level

meter, measure the RFoutput at the RF TP test point (20dB belowactual level) on the frontpanel and verify thatit is setat the specifiedvalue for thatchannel. Further adjust the RF outputlevelifrequired using MGC function

FRONT PANEL NUMERIC DISPLAY OPERATION DESCRIPTION

First pushSET on theLED display and set function.

A01: AGC/MGC setting menu A02: Channel selection menu

SET

A03: Alarm menu

A01

SET

OFF

SET

EXIT

AGC or MGC,

“ON” is AGC,

“OFF” is MGC

SET

EXIT

Push , and SET to set the

attenuation

(-20 to 0dB)

A2002

SET

EXIT

Choose A or

B channel

A0003

SET

EXIT

Push and

to view the

alarm code.

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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 invisibleoptical radiation. Laser light, visible or invisible, can seriously injure eyes and even cause blindness.

.()

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

place protectivecaps over the bulkhead and fiber connector

.-.

2 Disconnect the RFcables 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 on the handle that the thumbscrew goes through to removethemodule.

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

goes through

ALARM DEFINITIONS

First pushSET on theLED display and set function.

Displayed Message

000 001 002 003 004 005

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

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

TROUBLESHOOTING

When Status light is red operator can use “ ” 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 cause irreparable damage totheunit,and will void yourwarranty.

Problem

Steps to Take

RF input low.

1. Verify optical input powerrange is0 to -18dBm.

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

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Problem

No RF power at the RF output port.

RF output power is lower than the required amount.

OTOHP-FRX - BLOCK DIAGRAM

TROUBLESHOOTING (CONT.)

Steps to Take

1. Clean theopticalconnector.

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

3. Try to adjustthe RFoutput through MGC function.

4. Measure theRFpowerat output port.

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

1. Ensure allconnectorsareclean.

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 RFoutput through MGC function.

5. Measure theRFpowerat output port.

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

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SPECIFICATIONS

Optical Characteristics (with SM 9/125µm Fiber)

Min Typ Max Units

Operating Wavelength 1260 1620 nm Optical Input Power -3 +3 dBm Optical Return Loss -55 dB Optical Input Ports 2 Optical Connector SC/APC

RF Output & Performance Characteristics

Min Typ Max Units

Frequency Range 54 1,000 MHz Band Flatness -0.75 +0.75 dB

RF Output Return Loss 18 dB Output Level +35 dBmV RF Attenuation Range 0 +20 dBm Impedance 75 Ohms CNR 51 dB

CSO 63 dB

3, 4

CTB 67 dB

3, 4

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 10 90 % P. S. Voltage +24 V

Power Consumption 10 W

NOTES:

1) Band flatness is over a 54-1,000MHz range.

2) Received optical power of

-1dBm with 3.5% OMI per channel, 0dB attenuation setting.

3) +35dBmV output.

4) NTSC 77 channel loading.

5) Non-condensing.