EXFO Photonic Solutions Div. EPM-ELS-50: 3 Getting Started

3 Getting Started: EXFO Photonic Solutions Div. EPM-ELS-50

3 Getting Started

Turning the Unit On and Off

When you turn off the EPM-50, it saves the current wavelength, unit and reference

power.

IMPORTANT

If you remove the batteries, the unit will turn off without saving the

above values.

If batteries are low, the unit will save the above values and turn off.

Note: Offset nulling values are always returned to factory settings.

To turn on the unit:

Press . You may use the unit immediately under normal conditions.

To turn off the unit:

From normal operating mode, hold down a few seconds.

Display

Power meter wavelength

Reference power (EPM-50)

(EPM-50)

Source

modulation

(ELS-50)

Detected

modulation

(EPM-50)

Measured power/loss (EPM-50)

Active source wavelength (ELS-50)

Batteries level

Auto-off activated

Keypad

PRESS: Switches between

units

EPM-50

HOLD: Sets input power as

reference power

PRESS: Changes

HOLD: Turns unit on/off

wavelengths

PRESS: Controls

auto-off

PRESS: Activates next source

PRESS: Exits special

modes

HOLD: Deactivates current source

ELS-50

PRESS: Switches between

modulation values

EPM-50/ELS-50 5

Getting Started 6

Activating Automatic Shutdown (Auto-Off)

When auto-off is activated, the unit will turn off after

10 minutes of idle time.

Auto-off is activated by default when you turn on the

unit.

To deactivate/reactivate auto-off:

When unit is on, press .

Note: Auto-off is automatically disabled when you perform an offset nulling.

Changing Connector Adapters

The connector adapters are optional accessories available on the EPM-50 Power

Meter and ELS-50 Light Source. Depending on the type of connector on the fiber you

need to test, you might have to change them.

To change connector adapters:

1. Hold the unit so the connector port is facing you.

2. Turn the connector adapter counterclockwise to unscrew it.

3. Screw in the adapter you want to use.

Cleaning and Connecting Optical Fibers

IMPORTANT

To ensure maximum power and to avoid erroneous readings:

³ Always clean fiber ends as explained below before inserting

them into the port. EXFO is not responsible for damage or errors

caused by bad fiber cleaning or handling.

³ Ensure that your patchcord has appropriate connectors. Joining

mismatched connectors will damage the ferrules.

To connect the fiber-optic cable to the port:

1. Inspect the fiber using a fiber inspection microscope. If the fiber is clean,

proceed to connecting it to the port. If the fiber is dirty, clean it as explained

below.

2. Clean the fiber ends as follows:

2a. Gently wipe the fiber end with a lint-free swab dipped in isopropyl alcohol.

2b. Use compressed air to dry completely.

2c. Visually inspect the fiber end to ensure its cleanliness.

3. Carefully align the connector and port to prevent the fiber end from touching the

outside of the port or rubbing against other surfaces.

If your connector features a key, ensure that it is fully fitted into the port’s

corresponding notch.

4. Push the connector in so that the fiber-optic cable is firmly in place, thus

ensuring adequate contact.

If your connector features a screwsleeve, tighten the connector enough to firmly

maintain the fiber in place. Do not overtighten, as this will damage the fiber and

the port.

Note: If your fiber-optic cable is not properly aligned and/or connected, you

will notice heavy loss and reflection.

EPM-50/ELS-50 7