AWG G3 PAD FOR PS3 Spécifications télécharger pdf (Page 200)

7 Analog Modules Waveform Generators

200 System Reference, January 2001

Loop Back Routes

The front-end module can make the loop back route

between A+ and B+ and between A- and B- for channel 1.

For channel 2, it can make the loop back route between C+

and D+ and between C- and D-. When a loop back route is

made, the loop back route is disconnected from other

routes. Hence, you can make multiple loop back routes, or

make a loop back route and another route (output route or

DC route) using other pins at the same time. In the

following figure, the possible loop back routes are repre-

sented with bold lines.

Figure 89 Loop Back Routes

The loop back route is designed so that the line impedance

becomes 50 ohm exactly. As a result, the bandwidth of the

loop back route extends up to 500 MHz (typical value).

Hence, by using the loop back route, you can make a route

that has better performance than using additional user

relays on the DUT board.

A+

A-

Pogo Pin

Testhead

Analog Support Rack

Front-end Module

AWG Instrument

Sequencer/

Waveform

memory

DAC

B+

B-

Non-

inverse

Inverse

Clock

Oscillator

(Output Amp/

DC offset/

Attenuator/

Filter)

Analog Output

Circuit

uhfawgblock5

10 MHz Ref Clock

AGND

DGND

STATUS1

(Marker)

SYNC CLK

(Trigger)

C+

C-