Keysight Technologies 33210A Service Manual page 108

5 Block Diagram
A portion of the output sine wave is squared by a comparator and used to create a
variable duty cycle signal used by the Synthesis IC to create the squarewave,
pulse generator clock, and sync signals.
The squarewave DAC output is split into two opposite value signals and applied to
a multiplexer. The output of this multiplexer is a square wave or pulse signal with
the correct duty cycle. The rising edge and falling edge of the signal are adjusted
and the signal is buffered and sent to the Main Output Circuit.
The Main Output circuit accepts one of two inputs; the sine/arb waveform or the
squarewave/pulse waveform. Once selected, the signal can be applied to one or
both attenuators and/or a +20 dB amplifier. The attenuators and amplifier are
used to create the requested output signal amplitude.
Amplitude Range
(Vpp into 50 Ω)
10 V to 3.16 V
3.16 V to 1 V
1 V to 0.316 V
0.316 V to 0.1 V
0.1 V to 0.0316 V
0.0316 to 0.01 V
108
Offset <2.5 V
–10 dB –20 dB
Out Out
In Out
Out Out
In Out
Out In
In In
Offset >2.5 V
Amp –10 dB –20dB
In Out
In In
Out Out
Out In
Out
Out
Keysight 33210A Service Guide
Amp
Out In
Out In
In In
In In