Tektronix OM4006D, User Manual, Page: 171 / 205

Appendix F: Con fi guring two Tektronix 70000 series oscilloscopes
If using an external trigger source instead of self-triggering, drive Ch 2 of the
Master with the external source instead of using the Fast Edge of the Master.
Con
fi gure the master Ch 2 input as needed to trigger off of your trigger source.
Using a BNC cable, connect AUX OUT of Master to input of Sync Board.
Ensure that there is a DC block on input of Sync Board or (for newer Sync
Boards) that there is no DC bias applied to the Sync Board’s bias input.
Using identical-length SMA cables, connect the + output of the Sync Board
to Ch 4 of each scope; this Sync Board output should be taken from one of
its two + output ports and split with a >15 GHz passive splitter (see picture
below) to achieve absolute minimum jitter. Using both of the Sync Board’s +
outputs is also acceptable. In every case, unused Sync Board outputs must be
terminated in 50 ohms.
Connect the IQ signal inputs:
Connect X-I on the OM4000 to Ch3 on Oscilloscope 2 (lower oscilloscope)
Connect X-Q on the OM4000 to Ch1 on Oscilloscope 1 (upper
oscilloscope)
Connect Y-I on the OM4000 to Ch1 on Oscilloscope 2 (lower oscilloscope)
Connect Y-Q on the OM4000 to Ch3 on Oscilloscope 1 (upper
oscilloscope)
You can use other IQ-Channel mappings, just be sure to set the OUI
Connect dialog channel parameters accordingly.
Optical.
Connect DUT signal to Signal In on the OM4000
Connect Laser 2 Output to Reference Input with a short PM fi ber if not
internally connected
Oscilloscope settings
Be sure the Socket Server is on and run the Scope Service Utility on both
oscilloscopes.
Master oscilloscope trigger
settings
NOTE. The following screens may look different depending on the version of
oscilloscope fi rmware.
Set up the Aux-Out on the master scope to provide a positive edge after the
A event.
Set the master Reference to Internal
OM4000D Series Coherent Lightwave Signal Analyzer 147