Appendix A: Options and Accessories

Option 04 (Digital Data Output)

NOTE. Tektronix cannot be responsible for the infringement of any third-party industrial proprietary rights, copyrights, or other rights arising from the use of these circuits.

NOTE. The ECB is a multi-layer board. One layer is used as ground, the other as the power supply. The printed circuit pattern uses 50 W micro±strip lines and the data lines are wired to the same length so that their delay times will be the same.

Except for the connectors, the parts are all SMD (surface±mounted device) to connect at the minimum distance.

In laying out the runs, the fact that the signals are high frequency was taken into account when leading lines around, etc. For example, the latch IC is right next to the connector to shorten the run from the connector to the IC input. 50 W termination resistors are connected to the IC pins. The 50 W resistor return is connected through capacitance to the ground for the connector pin input signals.

The AWG2021 arbitrary waveform generator with Option 04 installed can provide the following signals at the rear panel output connector. For the layout of DIGITAL DATA OUT connectors on the rear panel, see ªRear Panelº in Section 2 ªOverview.º

NOTE. An AWG2021 cannot be equipped with Option 03, Option 04 and Option 09 together. Select either Option 03, Option 04 or Option 09.

Data Output. The data (D0±D11) fed to the internal D/A converter is buffered and connected to the output connector. At the same time that the analog waveform is output, the digital output can be obtained. Output will be at the TTL level.

Clock Output. The same clock that is fed to the internal D/A converter is buffered in the same way as the data and connected to the connector. As in the case of data output, clock output will be at the TTL level.

Figure A-10 is a block diagram of the digital data output Option 04.

AWG2021 User Manual

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