In Loopback Mode - Black Box CertiFiber TS655A Manual

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CERTIFIBER™

CertiFiber will store a separate reference value

for each wavelength.

The new reference value will be subtracted

from the actual measured value to determine

loss.

CertiFiber will store reference data for up to

five CertiFiber Remote units and one loopback

setup (see the next section).

To ensure consistently accurate measurements, the

reference value must be set each calendar day that

CertiFiber is used. The reference value expires each

day at midnight.

4.1.2 I

OOPBACK

If a single cable needs to be measured, the

reference value can be set for a single launch

cable. To do so, take these steps:

1. Attach one end of the cable

to the CertiFiber main

unit's TX1 connector, and

the other end to the RX2

connector, as shown at

right.

2. Use a coupler to connect

the Launch cables.

3. Press Shift + Autotest to

record the reference value.

4. Remove the coupler without disturbing

the connection to the CertiFiber.

NOTE

ODE

Coupler

RX2

TX1

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