AWG G3 PAD FOR PS3 Dokumentacja Strona 193

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Waveform Generators 7 Analog Modules
System Reference, January 2001
193
Figure84 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 150 MHz (typical value) for
the high resolution AWG, and 190 MHz (typical value) for
the high speed AWG. So, by using the loop back route, you
can make the route that has better performance than using
additional user relays on the DUT board.
Output Amplifier
The output amplifier can distribute a single-ended signal
transferred from the attenuator to the differential signals.
The output amplifier can also add the DC offset voltage to
the signals.
For the high speed AWG only, the output amplifier can
drive within 2.5 V to 5.0 V (DC+AC output level) into 50
ohm termination to the external termination voltage that
is equal or greater than 2.5 V. The termination voltage can
be supplied by the other DC resource such as DPS.
Pogo Pin
DAC
Output Multiplexer
A+
C-
D+
C+
B+
D-
SYNC CLK
SYNC DATA
awg3
Offset
DAC
B-
Non-inverse
Non-inverse
Inverse
Inverse
Master
Clock
Output
Amp
Attenu
-ator
Filter
A-
Start
Stop
Timing
Generator
Sequencer/
Waveform
memory
AGND
DGND
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