Tektronix OI1125, Instruction Manual

Page: 61 / 88

Performance Verification
OI1125 E/O Transmitter Instruction Manual
49
8. Set the Filter field on the oscilloscope to None.
9. Set the bandwidth field on the oscilloscope to 12.50 GHz. See steps 1
through 3 in the Oscilloscope Setup on page 45.
10. Repeat steps 1 through 3 for the 12.50 Gb/s, 1.5 V row in Table 18.
11. Disconnect the optical cable from the oscilloscope and perform another dark
level compensation. Reconnect the cable when the compensation is done.
12. Disconnect the cable from the BERT output and connect the 2X attenuator to
the BERT output. Connect the cable to the attenuator.
13. Set the BERT amplitude to 0.5 V.
14. Repeat steps 1 through 3 for the 12.50 Gb/s, 0.25 V row in Table 18.
15. Complete the remaining 0.25 V rows in Table 18, making sure to set the
proper filter field on the oscilloscope for each row.
16. Keep the test setup connected for the next test.