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nector plug must be disconnected while the battery
is being charged.
When the battery is almost fully charged, the
C H A R G E lamp becomes dim and finally goes off.
Continue charging for about 2 hours, then the
battery will have been fully charged.
MOUNTING OF HOOD
The supplied hood can be mounted on the os-
cilloscope as shown in Fig. 4.
D U A L - T R A C E A P P L I C A T I O N S
Introduction:
The most obvious and yet the most useful feature
of the dual-trace oscilloscope is that it has the
c a p a b i l i t y
for
simultaneously
waveforms that are frequency- or phase-related, or
that have a common synchronizing voltage, such as
in digital circuitry. Simultaneous viewing of input
and its output is an inbaluable aid to the circuit
designer
or
the
repairman.
applications of the dual-trace oscilloscope will be
reviewed in detail to familiarize the user further in
the basic operation of this oscilloscope.
Frequency Divider Waveforms Viewing:
Fig. 5 illustrates the waveform involved in a basic
divide-by-two
circuit.
C H 1
A . R E F E R E N C E F R E Q U E N C Y
T R A I N ( 1 0 0 0 P U L S E S P E R S E C O N D )
L E A D I N G E D G E S M A Y
V I S I B L E A T F A S T S W E E P
C H 2
B. D I V I D E - B Y - T W O O U T PUT S Y N C H R O N I Z E D TO
L E A D I N G E D G E O F R E F E R E N C E
C H 2
C .
D I V I D E - B Y - T W O O U T P U T S Y N C H R O N I Z E D TO
T R A I L I N G E D G E O F R E F E R E N C E
A P P L I C A T I O N S
viewing
t w o
Several
possible
Fig. A
indicates
the
P U L S E
N O T B E
R A T E S
P U L S E
P U L S E
Fig. 5 Waveforms in divide-by-two c i r c u i t .
H O O D
I N S E R T C L A W S
I N T O
4
H O L E S
Fig. 4 Mounting of Hood
reference or clock pulse train. Fig. B and Fig. C in-
dicate the possible outputs of the divide-by-two cir-
cuitry. Fig. 5 also indicates the settings of specific
oscilloscope controls for viewing these waveforms.
In addition to these basic control settings, the
T R I G G E R I N G
L E V E L
Channel 1 and Channel 2 vertical position controls
should be set as required to produce suitable dis-
plays.
In the drawing of Fig. 5
levels of 2 div are indicated.
measurements of Channel 1 and Channel 2 are
desired, the Channel 1 and Channel 2 V A R I A B L E
controls must be placed in the C A L position. The
Channel 2 waveform may be either that indicated
in Fig. 5 B or Fig. 5 C . In Fig. 5 C , the divide-by-
two output waveform is shown for the case where
the output circuitry responds to
B E Z E L
control,
as well
as the
the waveform
If exact voltage
negative-going
9
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