Keysight Technologies 86120B, User Manual

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Performance Tests
Test 2. Sensitivity
Test 2. Sensitivity
Description Sensitivity is verified using the following devices:
• Optical power meter
• Optical attenuator
• 1310 nm and 1550 nm lasers (>0 dBm output power)
C A U T I O N
Do not 18 dBm source power. The Keysight 86120B’s input
circuitry can be damaged when total input power exceeds 18 dBm.
Procedure Perform the following procedure first using the 1310 nm laser and then repeat the
steps using the 1550 nm laser.
1 Connect the laser’s output to the optical attenuator’s input.
2 Connect the optical attenuator’s output to the optical power meter.
3 Adjust the attenuator for a reading of 0 dBm on the power meter. Record the
attenuator’s setting.
Attenuation at 0 dBm: ____________
4 Adjust the attenuator for a reading of –35 dBm on the power meter. Record the
attenuator’s setting.
Attenuation at –35 dBm: ____________
5 Disconnect the fiber-optic cable at the power meter’s input and connect the cable to
the Keysight 86120B being tested.
6 Reset the optical attenuator to the setting recorded in Step 3 .
7 Read the power and wavelength measured on the Keysight 86120B, and compared
them to the specifications listed in
Chapter 7, “Specifications and Regulatory
Information” .
8 Reset the optical attenuator to the setting recorded in Step 4 .
9 Read the power and wavelength measured on the Keysight 86120B, and compared
them to the specifications listed in
Chapter 7, “Specifications and Regulatory
Information” .