User`s guide

Performance Tests Performance Tests
52 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
5
Switch down to the previous range (-10 dBm, 20 dBm for the 81628B) and
note the values again (#7).
6 Increase the attenuation of Atty1 by 10 dB and note the results in the test
record (#8).
7 At the DUT, 8162xB, press [Menu], move to <Range>, press Enter, move
to <-20 dBm>(10 dBm for the 81628B), press Enter and press [Close].
8 If necessary, adjust the attenuation of Atty1 in order to be on the upper
limit of the range (i.e. -x7.y dBm).
9 Decrease the attenuation of Atty2 to 10 dB in order to be on the upper
limit of the -50 dBm range at the reference power meter.
-20 dBm Range (equivalent to +10 dBm range for 81628B)
1 Disable Atty1.
2 Zero both Power Meters. On the 8163A/B with two installed power
meters, press [Menu], move to <Zero all>, and press Enter.
3 Enable Atty1.
4 Switch one range up to the -10 dBm (20 dBm for the 81628B) range and
note the power readings (#9).
5 Switch down to the previous (-20 dBm, 10 dBm for the 81628B) and note
the power readings again (#10).
6 Increase the attenuation of Atty1 by 10 dB and note the results in the test
record (#11).
7 On the DUT switch one range down to the -30 dBm (0 dBm for the
81628B) range.
8 If necessary, adjust the attenuation of Atty1 in order to be on the upper
limit of the range (i.e. -x7.y dBm).
9 Decrease the attenuation of Atty2 by 10 dB in order to be on the upper
limit of the -50 dBm range.
-30 dBm Range (equivalent to 0 dBm range for 81628B)
1 Disable Atty1.
2 Zero both power meters. On the 8163A/B with two installed power
meters, press [Menu], move to <Zero all>, and press Enter.
3 Enable Atty1.
4 Switch one range up to the -20 dBm range (10 dBm for the 81628B) and
note the power readings (#12).
5 Switch down to the previous range (-30 dBm, 0 dBm for the 81628B) and
note the values again (#13).