Tektronix TekRanger 2 TFS3031, Руководство по обслуживанию

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Performance Check – TekRanger 2 (serial nos. B052000 and above)
TFS3031 TekRanger/TekRanger 2 Service Manual
4–31
1. Clean the connector on the TFS3031 and the TFS3031 singlemode dynamic-
range test fixture.
2. Connect the TFS3031 to the dynamic-range test fixture and turn on power to
the instrument.
3. Check that loss at the front-panel connection is minimized (0.75 dB or less).
a. Press the Setup softkey to display the Test Setup menu, and set the
range to 1 km and the pulse width to 5 m. Select 1550 wavelength (1310
if option 04 or 1625 if option 12.). Press
Exit
.
b. Press and hold the
START/STOP
button to start a real-time acquisition.
c. If front-panel loss is greater than 0.75 dB, clean the fiber connector and
the laser output port.
4. Press the Setup softkey, then press SELECT if necessary to display the Test
Setup menu.
5. Select 1550-nm wavelength. (1310 nm if option 04, or 1625 nm if
option 12.)
6. Select the following test setups on the TFS3031:
Fiber Scan: Manual
Test Range: 80 km
Pulse Width: 20 m
Averages: approx. 3 minutes (as close as possible without being less than
three minutes)
7. Press the Exit softkey.
8. Press the START/STOP button.
20-Meter Pulse Width