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Performance Test Instructions Performance Tests
Agilent 81480A and 81680A, 40A, 82A, 42A, & 89A Tunable Laser Modules User’s Guide, Sixth Edition 73
Example (Agilent 81680A Output 1)
Power LinearityOutput 1
Power Linearity - High Power Test
Follow the steps below to measure the power linearity (without using
attenuation) of any one of the following:
• Output2, the High Power output, of the Agilent 81480A
• Output 2, the High Power output, of the Agilent 81680A
• Output 2, the High Power output, of the Agilent 81640A
• Agilent 81682A standard
• Agilent 81682A #003
• Agilent 81642A standard
• Agilent 81642A #003
• Agilent 81689A
1 Set up the equipment as shown in Figure 20 (remember to calibrate
the Agilent 81001FF Attenuation Filter if using 81524A).
2 Move to the Tunable Laser channel of the Agilent 8164A Lightwave
Measurement System and press [Menu].
Power Setting
from start
Measured Relative
Power from start
Power reduction
from start
Power Linearity
at current setting
Start = REF −6.0 dBm 0.00 dB + 0.00 dB = 0.00 dB
−7.0 dBm −1.02 dB + 1.00 dB = −0.02 dB
−8.0 dBm −1.92 dB + 2.00 dB = +0.08 dB
−9.0 dBm −3.02 dB + 3.00 dB = −0.02 dB
− 10.0 dBm −3.95 dB + 4.00 dB = +0.05 dB
− 11.0 dBm −5.07 dB + 5.00 dB = −0.07 dB
− 12.0 dBm −5.96 dB + 6.00 dB = +0.04 dB
− 13.0 dBm −7.05 dB + 7.00 dB = −0.05 dB
Maximum Power Linearity at current setting: +0.08 dB
Minimum Power Linearity at current setting: −0.07 dB
Total Power Linearity:
(Max Power Linearity − Min Power Linearity) 0.15 dBpp