AWG G3 PAD FOR PS3 Spezifikationen PDF herunterladen (Seite 245)

Synchronization 7 Analog Modules

System Reference, January 2001

245

Trigger Line Length and Signal

Line Length

In addition, there are two kinds of signal delay that are

caused by your wiring on a DUT board. One is the delay

caused by the electrical length of the trigger line between

the digital pin that provides the trigger signal and the

trigger input pin of the analog module; the other is the

delay caused by the electrical length of the signal line

between the analog module’s output/input pin and the

DUT input/output pin.

Therefore, you can synchronize the digital channel opera-

tion and analog module operation by considering the

following three delay factors:

• Trigger-to-signal delay of analog module

• Electric length of trigger line between digital pin and

trigger input pin of analog module

• Electric length of signal line between analog module

pin and DUT pin

Figure 113 Delay Factors for Analog Module Operation

From these delay factors, the edge location of the trigger

signal that you should set in the timing setup is decided.

The following shows the timing chart for the trigger signal

and analog module operation. By setting up the edge of the

trigger signal as follows, the analog module can start at

your desired timing.

Digital Channel

Board

Analog Module

Board

Testhead

(Side View)

DUT

DUT Board

Trigger line

length

Analog signal

line length

Trigger-to-signal

delay

Digital

Trigger

input

Analog

pogo pin

trgline

1 2 ... 240 241 242 243 244 245 246 247 248 249 250 ... 284 285

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