DTX Series Cable Analyzer
Technical Reference Handbook
7-4
Table 7-2. Diagnosing Fiber Test Failures (cont.)
Power meter measurement is too low
• Fiber endface is dirty or damaged.
• Patch cord not connected to tester’s INPUT port, or a connection is loose.
• Wavelength selected on tester doesn’t match source wavelength.
• Source set to modulated output.
• Patch cord or adapter is the wrong type (SM or MM) or patch cord has the wrong core size.
• Cabling is cracked or broken.
Power meter measurement is too high
Tester is connected to an active CATV fiber.
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