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The Functionality of the Tap Module Splitters

Directionality

6.1

In simplest terms, the splitters inside a Tap module act like a divider of a one-way traffic flow –

in this case, light.

The even-numbered LC connectors in a

Tap module serve only for source input and

their traffic is split between the LIVE and

TAP outputs (Figure 7, top).

In the same fashion, the Tap module's

odd-numbered LC connectors receive live

traffic from the LIVE MTP input port. The

input traffic from the LIVE input port is split

between the LIVE LC odd fibers and the

MTP TAP port (Figure 7, bottom).

Tables 2 and 3 in Section 9 provide a full

representation of the source and output

positions

6.2

Tap modules therefore must be tested with directionality in mind. The source must be always

connected to the input of the splitter and the meter must be connected to the output of the splitter.

Connecting a source to the output of a splitter will result in high attenuation.

Wavelength Considerations

6.3

The splitters on multimode modules are optimized for 850 nm VCSEL (Vertical-cavity Surface-

emitting Lasers), thus when testing multimode systems, use only the 850 nm wavelength.

6.4

Single mode systems may be tested at both 1310 and 1550 nm.

Installing an EDGE8™ LC-MTP Tap Module

NOTE: EDGE8 Tap modules are installed just like their normal EDGE8 module counterparts. Refer

to the Installation chapter in SRP 003-1002, EDGE8 Solution, for complete instructions. This

procedure covers module installation, trouble shooting, and other module-related topics as well.

Install the Tap module and its Tap MTP harness into your system housing.

Referencing the Test Equipment for an LC-MTP Tap Module

8.1

Start by powering on the source and meter and allowing a minimum of 5 minutes for them to

warm up and stabilize.

For multimode systems: set the unit to the 850 nm wavelength.

For single mode systems: Set the unit to auto-switch between 1310 and 1550 nm

wavelengths.

STANDARD RECOMMENDED PROCEDURE 003-137-AEN | ISSUE 1 | JANUARy 2017 | PAGE 5 OF 8

Input into

LC # 2

Tap output

on MTP ber 1

Live

output

from

LC # 1

Tap output

on MTP ber 2

HPA-0755-EDGE8

LIVE

output

TAP

output

LIVE

source

TAP

output

Figure 7