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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)
CAUTION Do not exceed +18 dBm source power. The Agilent 86120C’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 Agilent 86120C being tested.
6 Reset the optical attenuator to the setting recorded in Step 3.
7 Read the power and wavelength measured on the Agilent 86120C, and
compare them to the specifications listed in Chapter 6, “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 Agilent 86120C, and
compare them to the specifications listed in Chapter 6, “Specifications
and Regulatory Information”.