Tektronix TekRanger 2 TFS3031, Service Manual

Page: 170 / 272

Performance Check – TekRanger 2 (serial nos. B052000 and above)
TFS3031 TekRanger/TekRanger 2 Service Manual
4–9
Singlemode Reflectance Test Fixture
The reflectance test fixture is used to verify the reflectance accuracy of the
TFS3031. It consists of one 2.2-km (
±
250 m) spool of Corning SMF28
singlemode fiber, including:
H
JDS Fitel BR1 variable backreflector with FC/APC connector
H
FC/PC connector
PORT A
FC/PC Connector FC/APC Connector
SM Fiber
(2.4km)
BR1 Variable
Backreflector
Figure 4–3: TFS3031 Singlemode Reflectance Test Fixture
Assemble this fixture as follows:
1. Fusion splice the FC/PC connector to one end of the 2.2-km spool of
Corning SMF28 singlemode fiber.
2. Fusion splice the FC/APC connector to the other end of the 2.2-km spool.
3. Connect the backreflector directly to the FC/APC connector.