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OFT-920
Ruggedized Optical Loss Test
Set
USER M ANUAL
Revision 3.2
is registered trademark of OPTOKON, a.s. Other names and trademarks mentioned herein may be the
trademarks of their respective owners.
OPTOKON, a.s. Cerveny Kriz 250, 586 01 Jihlava, Czech Republic
tel. +420 564 040 111, fax +420 564 040 134, WWW.OPTOKON.COM, INFO@OPTOKON.CZ
s/w: 3.2
09/12/2016
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Related Manuals for OPTOKON OFT-920
Summary of Contents for OPTOKON OFT-920
- Page 1 Ruggedized Optical Loss Test USER M ANUAL Revision 3.2 is registered trademark of OPTOKON, a.s. Other names and trademarks mentioned herein may be the trademarks of their respective owners. OPTOKON, a.s. Cerveny Kriz 250, 586 01 Jihlava, Czech Republic tel. +420 564 040 111, fax +420 564 040 134, WWW.OPTOKON.COM, INFO@OPTOKON.CZ s/w: 3.2...
- Page 2 OFT-920 USER MANUAL is the registered trademark of OPTOKON, a.s. Other names and trademarks mentioned herein may be the trademarks of their respective owners All rights reserved. No parts of this work may be reproduced in any form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the written permission of the publisher.
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Page 3: Table Of Contents
OFT-920 USER MANUAL Content Introduction ....................4 Features......................6 Application ....................6 Accessories ....................6 Standard ........................6 Options: ........................6 Specifications ....................7 Light Source ......................... 7 Power Meter ......................... 7 Loss Test Set ........................ 7 Safety information ..................8 Maintenance .................... -
Page 4: Introduction
The OFT-920 optical test set is designed for testing optical networks terminated with connectors operating in harsh environments. It combines both a light source and optical power meter in one common box. The OFT-920 test set is designed to meet the tactical military and broadcast industry demand. The ruggedized aluminum case makes the unit ideal for field operation. - Page 5 OFT-920 USER MANUAL -top view: -rear view: - 5 -...
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Page 6: Features
OFT-920 USER MANUAL 2 Features Expanded Beam and ferrule harsh environmental connectors Ruggedized aluminum case Multimode (MM) or single mode (SM) applications Simultaneous testing of all 2/4 fibers Internal memory: up to 2000 measurements Displayed units: dBm, dB ... -
Page 7: Specifications
OFT-920 USER MANUAL 5 Specifications 5.1 Light Source Light Source: Note: Output power LD 850 nm, LED 850, 1300 nm -26 dBm (62.5/125 µm fiber) LD 1310, 1490, 1550, 1625 nm -16 dBm typ. value Stability (1 hour, delta/2): tested after 20 min warm up LD 850 nm, LED 850, 1300 nm ±... -
Page 8: Safety Information
OFT-920 USER MANUAL 6 Safety information This equipment complies with the following safety classifications: IEC825-1 and 21CFR1040: Class1 This applies to laser and LED options up to 1 mW, above 700 nm. Devices in this category are classified as safe for use by technicians under normal viewing, as long as magnifying devices are not used. -
Page 9: Maintenance
7 Maintenance 7.1 Battery care and replacement OFT-920 is equipped with a charger and powered by built-in, three-cell, NiMH battery pack. Rated voltage is 3.6 V, recommended capacity is 800 [mAh] (for 20 hrs operation). Use only the charger supplied by OPTOKON (DC 5 V, USB connector). - Page 10 OFT-920 USER MANUAL After opening disconnect battery connector and remove battery pack: Insert new battery and connect the battery connector (be careful for polarity). Take back the bottom panel, tighten all screws and insert back the rubber covers. - 10 -...
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Page 11: Instrument Care
OFT-920 USER MANUAL 7.2 Instrument care During storage and transport keep the instrument in its carrying case to • protect against crushing, vibration, dust and moisture. Where possible, keep the instrument away from strong sunlight. • Clean the instrument housing using alcohol or other cleaning agents. Acetone •... -
Page 12: Button Function Description
OFT-920 USER MANUAL 8 Button function description [ON/OFF] Press to turn the unit on. Press to turn the unit off. After switching on, the type of device, serial number and firmware version will be displayed. - 12 -... -
Page 13: Menu #1
OFT-920 USER MANUAL 8.1 Menu #1 [MENU] -starts menu -goes to menu #3 [LOSS] -activates the relative power measurement mode (dB) -recalls the last set reference for selected wavelength -goes to menu #2 [λ] -selects the wavelength (multimode - 850, 1300 nm, single mode -1310, 1490, 1550... -
Page 14: Menu #2
OFT-920 USER MANUAL 8.2 Menu #2 [HOME] -return unit into absolute power measurement mode (dBm) -goes to menu #1 [REFF] -sets and stores the new reference for the selected wavelength -requires confirmation [OK] [MENU] -starts menu -goes to menu #3... -
Page 15: Menu #3
OFT-920 USER MANUAL 8.3 Menu #3 [SETUP] -goes to menu #4 -allows to activate / deactivate Auto Off and Backlight [LS] -goes to Light Source screen press λ to select the wavelength − press OK to return to Power Meter screen −... -
Page 16: Menu #4
OFT-920 USER MANUAL 8.4 Menu #4 [AOFF] -activates or deactivates Auto Off feature. If activated, the unit will turn off after approximately 10 minutes of no activity. [B/L] -turns the Display Backlight On and Off [LIMIT] -sets limit (dB) for measured fibers - A1, A2, B1, B2 –... -
Page 17: Menu #5
OFT-920 USER MANUAL 8.5 Menu #5 [UP], [DOWN], [OK] Use these buttons to select an appropriate submenu. SAVE RESULT [+ MEM -] -selects the memory cell [SAVE] -saves the result into the selected memory cell and exits the menu NOTE: Memory cell number is automatically INCREMENTED BY 1 after [save] command. -
Page 18: Upload Memory
OFT-920 USER MANUAL UPLOAD MEMORY -sends the whole content of the internal memory to a PC via USB ERASE MEMORY -erases the whole internal memory HOME -exit menu, return to Power Meter screen - 18 -... -
Page 19: Measuring Loss
The test is based on measuring the power difference at the input and output of the link. One or two OFT-920 instruments are used for this test, where the light source port acts as a transmitter and the optical power meter port as a receiver. -
Page 20: Method 6 - Two Instruments
9.2.1 Setting the reference 1. Connect the first master cord to the light source port of first OFT-920 instrument. 2. Connect the second master cord to the power meter port of a second OFT-920 instrument. 3. Connect two cable ends. -
Page 21: Measuring Loss
LIMIT- PASS this means that this fiber is complied with the set LIMIT and ERR means that fiber overreached the set LIMIT. 6. Value of loss is possible to store into the OFT-920 internal memory by pushing [MENU], [MEMORY]. [SAVE], [+,-]., [SAVE]. -
Page 22: Method 6 - One Instrument
9.3.1 Setting the reference 1. Connect the first master cord to the OFT-920 Light source port. 2. Connect the second master cord to the OFT-920 Power meter port. 3. Connect two cable ends. -
Page 23: Measuring Loss
LIMIT- PASS, this means that this fiber is complied with the set LIMIT and ERR means that the fiber overreached set LIMIT. 6. Value of loss can be stored into the OFT-920 internal memory by pushing [MENU], [MEMORY]. [SAVE], [+,-]., [SAVE]. -
Page 24: Method 7 - Two Instruments
9.4.1 Setting the reference 1. Connect the master cord to the light source port of the first OFT-920 instrument. 2. Connect the second end of the master cord to the power meter port of the second OFT-920 instrument. -
Page 25: Measuring Loss
OFT-920 USER MANUAL 9.4.2 Measuring Loss 1. Do not disconnect the master cord from the first instrument. 2. Disconnect the master cord from the power meter port of the second instrument. 3. Connect the trace to be measured between the master cord and the power meter port of the second instrument. -
Page 26: Method 7 - One Instrument
1. Connect the master cord to the light source port. 2. Connect the second end of the master cord to the power meter port. 3. Power on the OFT-920 instrument. 4. Push [MENU], [LS]. 5. By pushing [λ] select the appropriate wavelength.(Light source) 6. -
Page 27: Measuring Loss
LIMIT- PASS, this means that this fiber is complied with the set LIMIT and ERR means that the fiber overreached set LIMIT. 5. Value of loss can be stored into the OFT-920 internal memory by pushing [MENU], [MEMORY]. [SAVE], [+,-]., [SAVE]. -
Page 28: Ordering Information
OFT-920 USER MANUAL 10 Ordering information Ordering Code: OFT-920 XXXX MM - multimode Source wavelength SM - single mode as below Connector type HMA2 HMA Expanded Beam connector HMA4 (non-contact optics), 2/4 fibers light source code description application LD650 650 nm visible laser... -
Page 29: Setting Up Data Transfer
OFT-920 USER MANUAL Setting up data transfer 1. Connect OFT-920 to a PC using the USB cable provided and turn the OFT-920 on. The PC will prompt you to install the drivers for new hardware. Use the drivers provided by OPTOKON. These drivers will create a virtual serial com port. - Page 30 OFT-920 USER MANUAL 4. Choose the virtual serial port the OFT-920 is connected to, then OK OFT920 5. Set “Bits per second” to 19200, click on OK - 30 -...
- Page 31 OFT-920 USER MANUAL • Go to the menu in OFT-920 and push [MENU], [MEMORY], [MORE], [SEND]. Stored data will be transferred to the PC in this format: memory position stored values (A1, A2, B1, B2) wave-length The data from this window can be easily copied to any other application.
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Page 32: Power Loss And Decibels
OFT-920 USER MANUAL Power loss and decibels Loss % Loss Power (mW) (dB) 0,00001 0,0001 0,001 0,01 0,10 10,9 0,13 12,9 0,16 14,9 0,20 16,8 0,25 18,7 0,32 20,6 0,40 36,9 0,50 49,9 0,63 60,2 0,79 68,4 1,00 74,9 1,26... -
Page 33: Notes
OFT-920 USER MANUAL Notes ................................................................................................................................................................................................................................................................................................................................................................................................................- 33 -... - Page 34 OFT-920 USER MANUAL ................................................................................................................................................................................................................................................................................................................................................................................................................- 34 -...
- Page 35 OFT-920 USER MANUAL - 35 -...
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Page 36: Calibration, Service Center
OFT-920 USER MANUAL Calibration, service center OPTOKON, a.s. Červený Kříž 250 586 01 Jihlava Czech Republic tel.: +420 564 040 111 fax: +420 564 040 134 optokon@optokon.cz www.optokon.com - 36 -...