Tektronix 114, Instruction Manual

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Characteristics — Type 114
GLOSSARY OF TERMS
MPPS
Bistable
(multivibrator)
Calibrate
A circuit that has two stable states and
requires two input pulses to complete a
cycle.
To check or correct the graduation ac­
curacy of quantitative indicators.
CAL (calibrated)
position
An index position to which an otherwise
ungraduated control is set when a quanti­
tative measurement must be made.
Catching or
clamping
diode
Establishes the + or — extremity of a volt ­
age excursion.
Count-down (of
pulses) circuit
Delayed pulse
Overshoot
PPS
Preshoot
Pulse amplitude
Pulse duration
A circuit, such as a bistable, whose output
consists of pulses fewer in number (usu­
ally a submultiple) than the pulses applied
to the input(s).
A pulse occurring after a preselected in­
terval following an event used as a time
reference point.
Delayed trigger
Duty factor
(of pulses)
Enabling pulse
External trig ­
ger (pulse)
Falltime
Generally, a narrow, delayed pulse.
For periodic pulses, the duty factor (often
called duty cycle) is equal to the duration
(width) of a pulse divided by the pulse
period.
A pulse which opens a normally closed
electric gate, or otherwise permits an oper­
ation for which a pulse input is a neces­
sary condition.
An enabling pulse derived from a source
external to the circuit or equipment where
a particular operation requires an enabling
pulse with certain characteristics (time de­
layed, duration, etc.).
The time required by pulse waveform to
fall from 90% of its maximum value to
10% of its maximum value. Not neces­
sarily equal to risetime.
Jitter
KPPS
Pulse period
Pulse Repeti ­
tion Frequency
Pulse width
Quiescent
Ramp voltage
Ringing
Risetime
Short-duration instability (of a signal); ran ­
dom small departures from regularity.
Kilopulses per second.
Monostable
(multivibrator)
A circuit having one stable and one semi­
stable state. A trigger pulse drives the
circuit into the semistable state, where it
remains for a predetermined time before
returning to the stable condition.
Sampling
system
Trigger
Megapulses per second.
When changing from one voltage level to
another, a momentary excursion greater
than the change desired.
Pulses per second.
A small negative excursion immediately
preceding a positive-going pulse, or vice
versa.
The amplitude of a pulse is any term indi­
cating the magnitude of the pulse.
The time interval between the first and
last instants at which the pulse voltage (or
current) reaches some specified percentage
of the peak voltage (or current) of the
pulse.
The pulse period in a sequence of periodic
pulses is the elapsed time between any
given point on one of the pulse waveforms
and the same point on the following pulse.
The number of periodic pulses that occur
in a given unit of time. Also expressed as
pulse repetition rate.
See pulse duration.
At rest — specifically, the condition of a
circuit when no input signal is being ap ­
plied and/or no change is taking place.
A voltage waveform that rises at a steady
rate. For example, at 10 volts per second..
High-frequency damped oscillations caused
by shock excitation of high-frequency res ­
onances, or, a damped oscillation in the
output signal of a system as a result of a
sudden change in the input signal.
The risetime of a pulse is taken as the time
required for the leading edge of the pulse
to increase from 10% of its maximum
value to 90% of its maximum value.
A method that takes amplitude samples
from a repetitive input signal with each
sample at a progressively later time, then
reconstructs these samples into a replica of
the original waveform at a much lower
frequency.
A signal that starts action in another
circuit.
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