Quantum Channel Multiplexing User Manual

Channel Multiplexing

One of the more unique features of the Quantum Composer pulse generators is the ability to combine the
timing of any or all channels together and output them out of any of the output BNCs. The multiplexing function
(MUX) can be set through remote communications via a computer or from the front panel of most units.

The MUX feature is available on all of the standard Quantum Composer voltage output pulse generators from
the price minded Sapphire series (9200 model) to the feature rich 9520 series. The feature operates the same in
all of the models and the setup for the MUX feature is identical across the different product lines. The MUX
feature combines the timing parameters (width and delay settings) of multiple channels together on one output
to create complex pulse train outputs. The output channel selected can also add its timing to the final output
train (Fig. 1). The third pulse of the combined pulse output (Channel 4 in Fig. 1) is generated by that specific
channel’s settings.

Fig. 1

Rev 00

The output amplitude of the combined pulse train will be determined by the output mode setting on the actual
output channel. The MUX feature does not combine the actual output voltage signal together. In other words,
combining a standard TTL (5V) output channel with an adjustable voltage output (10V) will not generate an
output that has both 5V and 10V outputs (Fig. 2).

Fig. 2

Each output channel has its own MUX setting located in the channel menu structure. The channel menu
structures are similar for most of the pulse generator models and a video of the 9520 channel menu structure can
be found on our website (http://www.quantumcomposers.com/support/videos). See figure 3 for an example of
the MUX menu on a 9500+ series pulse generator.

Fig. 3

Rev 00