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3152A User Manual
Getting Started 1-6
Racal Instruments
©
2001
External Clock
Input
The External Clock Input is available for those applications
required to run the complete system off the same clock.
Normally, this input is disabled. When enabled under program
control the clock at this input replaces the internal clock
generator and the output waveform will begin generating
waveforms with clock rates that are present at the external clock
input. Do not confuse the clock frequency with the frequency of
the waveform. The actual frequency of the output waveform
depends on the number of points that are allocated for the
waveform. For example, if the external clock is 10 MHz and the
number of points that were assigned to the active segment is
1000, the output frequency will be 10 KHz (10 MHz divided by
the number of points). The external clock input accepts fixed
level ECL signals within the range of DC to 100 MHz