Operating
Instructions
—
Type
3B5
Fig. 2-4.
LEVEL
control operation for auto triggering. (A) LEVEL
form, (B)
Display still
triggers at about the 30% point when the
trol
not adjusted
for second waveform).
control set to
trigger at about the 30%
point on a one-division wave
amplitude
is
increased to produce an eight-division display (LEVEL con-
First
graticule
Ninth
graticule
Fig.
2-5.
Area of
graticule used for accurate time measurements.
The
sweep
rate
is
selected
automatically in
the
Seek
Mode
or may
be
externally
programmed
in the External
Mode.
More
information
on
these modes
of
operation
is
given
under
Seek
Mode
Operation
and
External
Programming,
respectively.
Sweep
Output
The
sawtooth
sweep
signal
is
available
at
terminal
16
of
the
front-panel
PROGRAM
connector
for
external
applica
tions.
This
signal
is
also
connected
to
terminal
18
of
the
interconnecting
plug
for
operation
of
special
purpose
ampli
fier
units
(such
as
spectrum
analyzer
plug-ins).
Delayed
Sweep
Magnification
The
sweep
rate
can
be
increased
10 or
100
times
with
the
DLY'D
SWP
MAG
switch
(or by external
program)
to
magnify
the
portion
of
the
trace
which
follows
the
delay
period.
The
start
of
the
magnified
portion
can
be
positioned
with
the
DELAY
dial
(or
external
program
delay)
to
magnify
any
portion
after
0
to
10
divisions delay
from
the
start
of
the
trace.
Delayed
Sweep
Magnification
is
limited
to
sweep
rates
of
one
microsecond/division
or
slower.
The
sweep
magnification
automatically
returns to
X10
when
set
for
X100 with
sweep
rates
between
five microseconds/division
and
one
microsecond/division;
magnification
is
off
(X
1)
for
sweep
rates
faster
than
one
microsecond/division
in
any
position
of
the
DLY'D
SWP
MAG switch.
NOTE
The
sweep
rates
between
10
ns
and
.5
μ
s
can
not
be
magnified
with
the
delayed
sweep
magni
fier.
However,
the
Delayed
Sweep Magnifier
Intensifier
circuit is
operative in
these
positions
and
can
be
used
to
provide
a
brighter
trace
(com
plete trace
intensified) without
readjusting
the
indicator oscilloscope
intensity
level.
To
use
the
delayed
sweep
magnifier,
first select
a
sweep
rate
with
the
MANUAL
TIME/DIV
switch
which
correctly
displays
the
portion
to
be
magnified
(or press SEEK
button).
Then
set
the
DLY'D
SWP
MAG
switch for
the
desired
mag
nification
(X10 or X1
00).
Turn
the
DELAY
dial
to
position
the
magnified
portion
so
the
desired
part
of
the
sweep
is
magnified.
Fig. 2-6 shows
a
typical
waveform
as
it
would
appear
magnified
10
times
and
100
times (DELAY
dial
set
to 1.95).
2-10
Summary of Contents for 3B5
Page 4: ...Fig 1 1 Type 3B5 Automatic Programmable Time Base unit Type 3B5...
Page 15: ...Operating Instructions Type 3B5 TYPE 3B5 CONTROL SET UP CHART Fig 2 2 Control set up chart 2 7...
Page 48: ...CO I o Fig 3 13 Delay and Timing Circuit logic block diagram Circuit Description Type 3B5...
Page 61: ...GO i GO GO Fig 3 22 Seek Ciicuit Logic block diagram Circuit Description Type 3B5...
Page 70: ...u k KJ Fig 3 29 Circuit conditions for Manual Mode operation Circuit Description Type 3B5...
Page 71: ...w K w Fig 3 30 Circuit conditions for Seek Mode operation Circuit Description Type 3B5...
Page 72: ...w I u U Fig 3 31 Circuit condition for External Mode operation Circuit Description Type 3B5...
Page 88: ...Maintenance Type 3B5 Fig 4 9 Location of components on Logic Card 4 14...
Page 89: ...u Oi Fig 4 10 Location of components on Counter Card Maintenance Type 3B5...
Page 92: ...NOTES I...
Page 104: ...NOTES...
Page 106: ...Calibration Type 3B5 Fig 6 1 Recommended calibration equipment...
Page 160: ......
Page 176: ...J400 RtADOUT BOARD 3B5 PLUG IN A READOUT...
Page 182: ...397 R E A D O U T B O A R D 10 6b READOUT BOARD...
Page 184: ...FIG 1 FRONT SWITCHES TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Page 185: ...FIG 2 CHASSIS REAR 3 GS to TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Page 186: ...OPTIONAL ACCESSORIES...
