TM 11-6625-2980-14
Definitions of Pulse Characteristics The following
is a glossary of common pulse characteristics used in
this manual. They are illustrated in Fig. 1-8.
Amplitude. The maximum absolute peak value of a
pulse measured from the baseline regardless of sign,
and excluding unwanted aberrations or overshoot.
Measurement points are at 50% of the pulse duration
time (pulse high level) and on the baseline (pulse low
level) at 50% of the off time (the pulse period minus the
pulse duration).
Aberrations. Unwanted deviations or excursions in
the pulse shape form an ideal square corner and flat
top, i.e., overshoot, undershoot or rounding, ringing, and
tilt or slope.
Baseline. The quiescent dc voltage reference level
of the pulse waveform.
Complementary Pulse. Normal pulse with high and
low levels interchanged. Pulse on-time becomes pulse
off time.
Duty Factor. Sometimes referred to as duty cycle.
The ratio of pulse duration to period, or the product of
pulse duration and pulse repetition rate. Duty factor in %
=Duration/Period X 100.
Falltime. The time interval, at the pulse trailing
edge, for the pulse amplitude to fall from the 90%
amplitude level to the 10% amplitude level.
Flatness. The absence of long term variations to
the pulse top; excluding overshoot, ringing or pulse
rounding. Sometimes referred to as tilt or slope.
High Level. The most positive value of a pulse,
regardless of unwanted aberrations or overshoot,
measured at a point that is located at 50% of the pulse
duration.
Low Level. The most negative value of a pulse,
regardless of unwanted aberrations or overshoot,
measured at a point that is 50% of the off time.
Offset. A dc potential of either polarity applied to
the waveform to bias the baseline to an amplitude other
than zero
Overshoot. The short term pulse excursion (or
transient) above the pulse top or below the baseline,
which is simultaneous to the leading or trailing edge of
the pulse.
Period. The time interval for a full pulse cycle,
inverse of frequency or repetition rate, or the interval
between corresponding pulse amplitudes of two
consecutive undelayed or delayed pulses. Generally
measured between the 50% amplitude levels of two
consecutive pulses.
Preshoot. A transient excursion that precedes the
step function. It may be of the same or opposite polarity
as the pulse.
Fig . 1-8 . Pulse characteristics .
1-8
Summary of Contents for PG 508
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Page 51: ... BACKSIDE TRANSITION TIMING BOARD Α3 ...
Page 53: ...HIGH LOW LEVEL LEVEL Trigger Generator PG 508 ...
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Page 93: ...M30603 Change Reference DESCRIP riON LEVEL CONTROL MULTIPLIER Partial ...
Page 100: ...TM 11 6625 2980 14 Figure 1 0 Pulse generator AN USM 359A vi ...
Page 145: ...TM 11 6625 2980 14 POWER MODULE INTERFACE PIN ASSIGNMENTS FRONT VIEW A 15 ...
Page 146: ...TM 11 6625 298014 DETAILED BLOCK DIAGRAM A 16 ...
Page 165: ...TM 11 6625 2980 14 FO 2 Block Diagram 4 3 4 4 blank ...
Page 166: ...TM 11 6625 2980 14 FO 3 Input circuit schematic diagram 4 5 4 6 blank ...
Page 167: ...TM 11 6625 2980 14 FO 4 Period generator schematic diagram 4 7 4 8 blank ...
Page 168: ...TM 11 6625 2980 14 FO 5 Delay generator schematic diagram 4 9 4 10 blank ...
Page 170: ...TM 11 6625 2980 14 FO 7 Transition time generator schematic diagram 4 13 4 14 blank ...
Page 171: ...TM 11 6625 2980 14 FO 8 Level control multiplier schematic diagram 4 15 4 16 blank ...
Page 172: ...TM 11 6625 2980 14 FO 9 Output amplifier schematic diagram 4 17 4 18 blank ...
Page 173: ...TM 11 6625 2980 14 FO 10 Tracking voltage supply schematic diagram 4 19 4 20 blank ...
Page 174: ...TM 11 6625 2980 14 FO 11 PG 508 power supply schematic diagram 4 21 4 22 blank ...
Page 175: ...TM 11 6625 2980 14 FO 12 TM 503 power supply schematic diagram 4 23 4 24 blank ...
Page 176: ...TM 11 6625 2980 14 FO 13 A2 board component locations 5 3 5 4 blank ...
Page 177: ...TM 11 6625 2980 14 FO 14 A3 board component locations 5 5 5 6 blank ...
Page 178: ...TM 11 6625 2980 14 FO 15 A4 board component locations 5 7 5 8 blank ...
Page 179: ...TM 11 6625 2980 14 FO 16 PG 508 exploded view 5 9 5 10 blank ...
Page 180: ...TM 11 6625 2980 14 A 17 A 18 blank ...
Page 181: ...TM 11 6625 2980 14 TM 503 POWER MODULE A 23 A 24 blank ...
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