EG&G ORTEC 427 Manual de instrucciones - Página 7

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1-1
ORTEC 427 DELAY AMPLIFIER
1.
DESCRIPTION
The 427 Delay Amplifier has a nominal gain of unity and provides the capability
of linearly delaying a linear or logic signal from zero to 4.75 microseconds in 0.25
microsecond increments. The amount of delay is selected by five front panel switches.
This delay is accomplished by inserting any combination of five delay lines of 0.25,
0.5, 1 .0, 1 .0, or 2.0 microseconds in series with the signal path. These delay
lines are terminated in their characteristic impedance at both ends to minimize im
pedance mismatch and resultant pulse reflections on the lines.
NOTE: The 427 has a limited bandwidth as shown in the specifications. Due
to this fact, it should not be used to delay signals of varying bandwidth
such as the output of a biased amplifier (i.e., ORTEC 408). If a biased
amplifier is used in a system, the 427 should be used either in front of it
or after the 411 Pulse Stretcher, where the pulses have a uniform bandwidth.