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O P E R A T I N G P R O C E D U R E
pulse c o n s i s t s of a negative-going transition of about
3.13 USE FOR COMPLEX WAVEFORMS.
5 volts and 100-ns duration, followed immediately by a
Since t h e output circuit of t h e T y p e 1398-A is
positive transition of about
5
volts and 150-ns duration.
e s s e n t i a l l y a current source feeding a r e s i s t i v e load,
The initial negative-going transition will trigger the
t h e outputs of two or more p u l s e generators c a n b e
input circuits and s t a r t t h e main p u l s e of
a
following
directly, paralleled t o produce complex additive wave-
Type 1398-A. T h e positive-going transition will then
forms. T h e output impedance of n p u l s e generators s o
r e s e t the input circuits of the second Type 1398-A to
paralleled is 1000/n ohms and t h e peak voltage is s t i l l
prepare i t for the next delayed p u l s e . Figure 3-8 s h o w s
6 0 v o l t s . A complexwaveform and t h e system to produce
connections and timing waveforms of s u c h a s y s t e m .
i t a r e shown in Figure
3-9.
TYPE 1210-C U N I T
TYPE 1398-0,
TYPE 1398-A
R-C OSCILLATOR
PULSE GENERATOR# l
PULSE G€NERATOR.*2
TYPE 1210-C
TYPE 1398-8 ,#I
PREPULSE
TYPE 1398-A
,*
I
MAIN PULSE(NEG1
I
L
TYPE 1398-A # 1
DELAYED
PULSE
h
TYPE 1398-A
#
2
MA'IN P U L S ~
INSa-61
F i g u r e 3-8.
C o n n e c t i o n of t w o T y p e 1398-A's
a s a d e l a y generator.
TYPE 1398-A$I
TYPE 1398-8
TYPE 1398-A
TYPE 1398-A
PULSE GENERATOR,#I
PULSE GENERATORP2
PULSE GENERATOR,#3
TYPE 139&A,X2
V
A
v
0
0
0 0 0
o * -
0 0 0 0 0
o p
-
TYPE 1398-A,X3
F i g u r e 3-9.
System for producing t h e c o m p l e x waveform shown.
-a
0
0 0
0
0 0
0 0 0 0 0
0 9
- 4
0
0 0 0 0
0 - -
I
-
-
C
OUTPUT
I
- -
-
-
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