User`s guide

Performance Tests Performance Tests
Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
51
Switch to the 20 dBm range and note both power readings as n=0 in the
test record, which is given at the end of the test descriptions (#0, that is
n=0). Switch back to the 10 dBm range.
2 Note both power readings as the first value (n=1) in the test record,
which is given at the end of the test descriptions (#1).
3 Increase the attenuation of Atty1 until the power reading of the DUT
shows about +2.8 dBm.
4 Note the InRange-values in the test record (#2)
5 At the DUT, 8162xB, move to <Range>, press Enter, move to <0 dBm> (30
dBm for 81628B), and press Enter.
6 Adjust the attenuation of Atty2 in order to be on the upper limit of the -
50 dBm range at the reference power meter (i.e. -47.2 dBm).
0 dBm Range (equivalent to +30 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 range (+40dBm for 81628).
5 Note both power readings (#3).
6 Switch down to the previous range (0 dBm, 30 dBm for the 81628B) and
note the values again (#4).
7 Increase Atty1 by 10 dB and note the results in the test record (#5).
8 At the DUT, 8162xB, press [Menu], move to <Range>, press Enter, move
to <-10 dBm>(20 dBm for the 81628B), press Enter, and press [Close].
9 If necessary, adjust the attenuation of Atty1 in order to be on the upper
limit of the range (i.e. -x7.y dBm).
10 Decrease the attenuation of Atty2 by 10 dB in order to be on the upper
limit of the -50 dBm range at the reference power meter.
-10 dBm Range (equivalent to +20 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 0 dBm range (30 dBm for the 81628B) and
note the power readings (#6).