Black Box TS725A Bedienungsanleitung

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

NOVEMBER 2000

TS725A

FO726

FO727

FO728

Fault Finder

FAULT FINDER

TRADEMARKS USED IN THIS MANUAL

Any trademarks mentioned in this manual are acknowledged to be the property of the

trademark owners.

EC Declaration of Conformity

The manufacturer declares under sole responsibility that the Fault Finder,

manufactured in the United States of America, meets the intent of the directive

89/336/EEC for electromagnetic compatibility. Compliance was demonstrated to

the following specifications as listed in the official Journal of the European

Communities:

EN 50081-1, Emissions: EN 55022 Radiated, Class B

EN 55022 Conducted, Class B

EN 60555-2 Power Harmonics

EN 50082-1, Immunity: IEC 801-2 Electrostatic Discharge

IEC 801-3 RF Radiated

IEC 801-4 Fast Transients

IEC 801-5 Surge

FAULT FINDER

Specifications

Light Source — 635-nm red laser diode and monitor, with multi-quantum well

structure

Central Wavelength — Nominal: 635 nm; Range (typical): 630 nm to 640 nm

Spectral Width — < 2 nm

Peak Power Output* — Into SMF-28 fiber, CW or MOD output mode: 1.0 mW

(0 dBm) maximum, 316 µW (-5 dBm) minimum

Maximum Emitted Power — 5 mW

MOD Output Frequency — < 3 Hz, approximate

Power Requirements — (2) 1.5-volt alkaline batteries

Battery Life — 24 hours in solid mode; 48 hours in blinking mode

Connector Interface — 2.5-mm “quick connect” port (APC-type ferrule coupling

efficiency reduced by > -3 dBm), or snap-on connector adapters

CDRH — Class 3a

Operating Temperature — 14 to 122°F (-10 to +50°C)

Storage Temperature — -40 to +140°F (-40 to +60°C)

Humidity — Up to 95% relative humidity, noncondensing

Size — 1" x 9" (2.54 x 22.9 cm)

Weight — 7 oz. (199 g) with batteries and pouch

*Within specified ambient environment of +20°C to +25°C; APC-type ferrule coupling efficiency reduced by

> -3 dBm; Output power with beam collimator may exceed 1 mW. Product complies with CDRH Class II, 1-mW

maximum without collimator accessory and IEC 825-1: 1993, 5-mW maximum

FAULT FINDER

Introduction

The Fault Finder is a pocket-sized instrument for finding problems in fiber cabling.

It uses a stabilized, high-output 635-nm laser diode that runs up to 24 hours in

continuous mode, or 48 hours in blink mode, from two AA alkaline batteries.

The Fault Finder can clearly locate breaks and bending losses in optical fibers up

to 3 km in length. A rotary switch on the instrument lets you select between

continuous wave (CW) and a blink (MOD) mode that increases viewing contrast,

or switch the instrument off with one hand. A universal “quick connect” output

port enables convenient temporary coupling with all 2.5-mm fiberoptic connectors.

The instrument can also be used with optional Fault Finder ST, SC, or FC snap-on

connector adapters, which permit secure coupling with these industry-standard

fiber optic interfaces.

When you order the Fault Finder, you’ll receive the unit, a nylon carrying pouch,

this instruction manual, and (2) 1.5-volt alkaline batteries. There are also optional

ST, SC, and FC adapters for the Fault Finder available separately.

FAULT FINDER

Battery Installation/Replacement

The Fault Finder is shipped without the batteries installed. The two AA-size

alkaline batteries shipped with the instrument must be installed before use. Do not

use non-alkaline or rechargeable batteries in the instrument.

NOTE

If the LED indicator appears dim during operation, it is time to replace

the batteries in the unit.

To install or replace the batteries, follow the steps below and refer to the

illustration above.

1. Make sure the rotary switch is in the OFF position.

2. Unscrew the end cap by turning it counterclockwise, then remove the used

batteries, if any.

3. Insert two new AA-size alkaline batteries positive end first, as shown in the

illustration above.

4. Replace the end cap, turning it clockwise to tighten it in place.

End cap

AA-size

batteries

FAULT FINDER

Operation

Controls and Indicators

Using the 2.5-mm “Quick Connect” Output Port

1. Insert the ferrule of a fiber optic connector into the “quick connect” output

port, ensuring that it seats completely. You should always clean the endface of

the connector before inserting it in the quick connect output port.

2. Rotate the switch to the desired operating mode by moving it to the right. The

first position puts the instrument in continuous wave (CW) mode. The second

position puts the instrument in blink (MOD) mode. The LED indicator on the

unit will light steadily in CW mode. It will blink in MOD mode.

3. See the Applications section for instructions on tracing faults in optical fibers.

Fault Finder Snap-On Connector Adapters

Optional Fault Finder snap-on connector adapters are available for ST, SC, and FC

fiberoptic connectors. These adapters fasten securely to fiberoptic connectors and

prevent them from pulling loose from the instrument. To use a snap-on connector

adapter with the Fault Finder, follow the steps below.

1. Select the appropriate Fault Finder snap-on connector adapter and press it

firmly over the quick connect output port.

2. Insert the connector under test into the adapter and secure it. Most fiberoptic

connectors are secured by turning the outer sleeve clockwise.

3. Rotate the switch to the desired operating mode.

4. See the Applications section for instructions on tracing faults in optical fibers.

Rotary switch

Dust cap

Optional snap-on

connector adapter

LED indicator

End cap

“Quick connect” output port

FAULT FINDER

NOTE

Standard snap-on connector adapters cannot be used on the Fault

Finder, as they are larger in diameter.

WARNING!

Do not look directly into the output port when the instrument is ON.

Never use a viewing instrument, such as a magnifier or microscope, to

view the free end of any optical fiber connected to the Fault Finder. The

use of viewing instruments on active fibers can focus an intense laser

beam onto the retina of the eye, resulting in permanent damage or

blindness. Always aim the free end of an active fiber at a non-reflective

surface.

Applications

The Fault Finder is designed to quickly locate breaks in optical fibers. Any

interruption in continuity will be indicated by red light escaping from the fiber.

Light can also escape from the fiber if it is stressed or bent too tightly. In either

case, escaping light is a sure sign of a problem.

Dirty connectors

Microbend loss

Break in fiber

Continuity Check

FAULT FINDER

The Fault Finder can also be used to check the condition of ceramic ferrules. A

fiber break inside, or past, the ferrule will make it glow, as shown above. If the

entire connector glows, it is definitely bad.

A glowing ferrule can also indicate a bad endface polish. If the endface polish is

bad, light in the fiber will be reflected internally and will be visible through the

ferrule, as shown above.

FAULT FINDER

Cleaning

Cleaning the Output Port

Cleaning all connectors before coupling them to the Fault Finder ensures proper

maintenance of the output port and laser lens. Always cover the output port with the

dust cap when you’re not using the Fault Finder.

If binding or stickiness is felt when inserting connectors into the output port, the

ceramic sleeve should be cleaned. Insert a cleaning wand (not included) into the

output port until it stops. Twist the wand, remove it, and discard. Do not reuse the

cleaning wand.

Cleaning the Laser Lens

If the intensity of the light output decreases considerably, despite the batteries

being in good condition, the laser lens is probably dirty. Loose dirt can be removed

by applying suction to the output port.

NOTE

Do not blow air into the output port to remove dirt particles. Doing so

will only pack the dirt and make it harder to remove.

If the lens is extremely dirty, flush out the output port with a small amount of

reagent-grade isopropyl alcohol, then apply gently suction to remove any

remaining dirt. Make sure that all residual alcohol has evaporated before resuming

testing.

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