Figure 18: Setup For The Eye Pattern Test Matrix - Tektronix OI1125 Instruction Manual

External
Tunable Laser
D3186
1/32
Clock
Data
Trig
SMA cable
015-0561-00

Figure 18: Setup for the eye pattern test matrix

OI1125 E/O Transmitter Instruction Manual
Laser in
(FC/APC)
Opt
OI1125
Out
Optical cable
174-4725-00
The following parameters are set up to measure the data for the first row in
Table 19 in the Test Record. As you progress through the tables, you must
change the bit rate of the BERT, the laser wavelength and amplitude settings, and
the signal conditioning mode in the oscilloscope, according to the table and row
you are completing.
BERT. Set the BERT parameters as follows:
1. Recall the 2.48832 Gb/s bit rate.
2. Set the pattern to PRBS–31.
3. Disable the adjustable duty cycle.
4. Set the mark ratio to 1/2.
5. Set the trigger to 1/32 clock.
6. Set the data amplitude to 1.5 V
Tunable Laser. Set the tunable laser parameters as follows:
1. Set the wavelength to 1530 nm.
2. Set the amplitude to 5 dBm.
Modulator
Data in
Modulator out
(FC/APC)
Optical
input
(FC/PC)
Optical cable
174-4727-00
SMA cable
174-1341-00
.
p–p
Performance Verification
CSA8000/TDS8000
Trigger
Direct In
51