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7 Analog Modules Synchronization

242 System Reference, January 2001

Synchronization

This section provides the following information for

synchronizing between the digital channel operation and

the analog module operation (except for TIA):

• Synchronization concepts

• Technical data of the synchronization trigger

• How to adjust the synchronization timing

• How to remove the synchronization

uncertainty that

occurs in the high speed analog module

• Special synchronization function for high speed AWGs

and dual high speed samplers

Synchronization Concepts

An analog module starts the operation when it receives a

trigger signal. The trigger signal for the analog module is

provided by a digital channel generally. All analog

modules have dedicated trigger input pins. For sending

the trigger signal, you have to connect the digital pin that

provides the trigger signal and the trigger input pin of the

analog module on the DUT board.

Trigger-to-Delay and

Uncertainty

Analog modules start measurement or waveform genera-

tion after a certain delay from the time the trigger signal is

received. This delay time is called trigger-to-signal delay.

Each analog module has a dedicated value of delay time.

The analog module’s timing calibration supported by the

system compensates the trigger-to-signal delay in each

analog module. After the calibration, the trigger-to-signal

delay will become the fixed value for each analog module.

The following table shows the fixed value of the trigger-to-

signal delay, the accuracy of the trigger-to-signal delay,

and uncertainty of the analog module’s start timing.

1 2 ... 237 238 239 240 241 242 243 244 245 246 247 ... 284 285

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AWG G3 PAD FOR PS3 Spezifikationen Seite 242