SPECIFICATIONS MODEL lOOA
1.6. 1 Single Pulse
One pulse per cycle occurs in the main outputs
at the end of the delay period.
1. 6.2 Double Pulse
Two identical pulses per cycle occur in the main
outputs, the first approximately 40 nanoseconds after the
reference trigger, and the second at a time determined by
the pulse delay controls.
Pulse Delay
Pulse delay is continuously variable from
40 nanoseconds with respect to the reference trigger, or
60 nanoseconds with respect to an external trigger, up to a
maximum of 10 seconds in seven decade ranges with a
100:l multiplier. Delay is variable over at least 70% of the
pulse period up to a repetition rate of 1 megahertz, de-
creasing to 50%above 4 megahertz and 30% at 10 megahertz.
The reference trigger is counted down when the delay is
greater than the pulse period, with stable countdown ratios
greater than 100:1 possible; the advance trigger is not
counted down.
1.8
Pulse Width
Pulse width is continuously variable (measured at
the
50%
point of the leading and trailing edges) from typically
35 nanoseconds (40 nanoseconds maximum) to 10 seconds in
seven decade ranges with a 100:l multiplier. The maximum
duty cycle is at least 60% and is typically 7070.
Main
Pulse Output
Pulse amplitude is continuously variable from
0.
5
to 10 volts into 50 ohms with simultaneous positive and
negative dc coupled outputs (baselines are at ground). The
source impedance decreases with amplitude and is approxi-
mately 50 ohms at amplitudes less than
5
volts.
