Performance
Check
—Type
3B5
VARIABLE
CAL
Trigger Function
EXT-AC
LEVEL
Midrange
SLOPE
+
Amplifier
Unit
Position
Midrange
Input
Coupling
DC
Volts/Division
10
Volts
Mode
Manual
Indicator
Oscilloscope
Focus
See
step
1
Intensity
See
step
1
Calibrator
10 Volts
Power
On
5. Set
the
indicator
oscilloscope
power
switch
to on.
Allow
at
least five
minutes
warm
up
at
25°
C,
±5°,
for
checking the instrument
to
the
given accuracy.
1.
Check
Trigger
Level
Centering
REQUIREMENTS
-----
1-
and
—20
volt
sine-wave
signal
cen
tered
within
the
LEVEL
control range (EXT-AC).
a.
Connect
the
low-frequency sine-wave
generator
to
the
amplifier
unit input
connector
through
the
BNC
cable
and
the
BNC
T
connector
(use
the
BNC
to
alligator
clips adapter
to
connect
the
generator
ouput
to
the
BNC
cable). Connect
the
output
of
the
BNC
T
connector
to
the
Type
3B5
EXT
TRIG
INPUT
connector
with
a
BNC
cable.
b.
Set
the
low-frequency
sine-wave
generator
for
a
four-
division
CRT
display
(40
volts
peak
to
peak) at
one
kilohertz.
c.
Set
the
indicator
oscilloscope
intensity
control
for
a
visible
display.
d. Set
the
indicator
oscilloscope focus
control
for
a
focused
display.
e. Turn
the
LEVEL
control
fully
counterclockwise.
f.
ADJUST
—
TRIG
LEVEL
CENTERING
adjustment,
R15
(on
front
panel),
to
setting
where
unit
does
not
trigger
(no
trace
and
NOT
TRIG'D readout on)
for
both
+ and
— slope.
g.
Turn
the
LEVEL
control
fully clockwise.
h.
ADJUST
—
TRIG
LEVEL
CENTERING
adjustment,
R15,
to
setting
where
unit
does
not
trigger
for
both
+
and
—
slope
triggering.
Then,
set
the
adjustment midway
between
the
setting
obtained
in
step
f
for
this
setting
i.
Recheck
steps
e
through
h
and
readjust
if
necessary.
The
display
must
not
be
triggered
(no
trace)
at
either
end
of
rotation
for
both
+
and
—
slope triggering when
correctly
adjusted.
(This
step
also
checks
EXT-AC
trigger
LEVEL
range
for
at
least +
and
—
20
volts.)
2.
Check
Trigger
Level
Control
Range
REQUIREMENT
—
EXT-AC,
checked
as part
of
step 1;
EXT-
DC,
at
least
+
and
—
10
volts.
a.
Set
the
LEVEL
control
to
midrange.
b.
Set
the
low-frequency sine-wave generator for a
two-
division
CRT
display
(20
volts
peak
to peak) at
one
kilohertz.
c.
Set
the Trigger Function
switch
to
EXT-DC.
d.
CHECK
—
NOT
TRIG'D
readout
off
(unit
triggered).
e. Turn
the
LEVEL
control
fully
counterclockwise.
f. CHECK—
CRT
display
not
triggered
(no
trace)
and
the
NOT
TRIG'D
readout
is
on
for
both +
and —
slope
trig
gering
(indicates
at
least
—10
volt
LEVEL
control
range).
g.
Turn
the
LEVEL
control
fully
clockwise.
h. CHECK
—
CRT
display
not
triggered
and
the NOT
TRIG'D
readout
is
on
for
both
+
and
—
slope
triggering
(indicates
at
least
+10
volt
LEVEL
control
range).
3.
Check
Auto
Trigger
Centering
REQUIREMENT
—
Stable
auto
triggering
on
a
0.5-division
display
throughout
the
rotation
of
the
LEVEL
control.
a.
Change
the
following
control
settings:
Trigger
Function
LEVEL
Volts/Division
(amplifier
unit)
INT-AUTO
Midrange
1
Volt
b.
Set
the
low-frequency sine-wave generator
for
a
0.5-
division
CRT
display
(0.5
volt
peak
to
peak)
at
one
kilohertz.
c. Turn
the
LEVEL
control
fully
counterclockwise.
d. CHECK
—
Stable
CRT
display for
both
+
and
— slope
triggering.
Auto
Trigger
light
must
be
on.
e.
Turn
the
LEVEL control
fully
clockwise.
f. CHECK
—
Stable CRT
display
for both
+
and
—
slope
triggering.
4.
Check
Low-Frequency
Triggering
Operation
REQUIREMENT
—Correct
triggering
with
minimum
deflec
tion
or
minimum
input
voltage
in
all
positions
of
the
Trigger
Function
switch.
a. Change
the
following
control
settings:
MANUAL
TIME/DIV
20
ms
Trigger Function
EXT-AC
LEVEL
Midrange
SLOPE
+
b.
Set
the low-frequency
sine-wave
generator
for
a
one-
division
CRT
display
(one
volt
peak to
peak)
at 50
hertz.
c. CHECK
—Stable
CRT
display can
be
obtained
with
the
LEVEL
control
for
both
+
and
—
slope
triggering.
d. Set
the Trigger
Function
switch
to
EXT-DC.
e. CHECK
—Stable
CRT
display
can
be obtained
with
the
LEVEL
control
for
both
+ and — slope
triggering.
f.
Without
changing
the
output
amplitude,
set
the
low-
frequency
sine-wave
generator
to
10
hertz.
5-2
Содержание 3B5
Страница 4: ...Fig 1 1 Type 3B5 Automatic Programmable Time Base unit Type 3B5...
Страница 15: ...Operating Instructions Type 3B5 TYPE 3B5 CONTROL SET UP CHART Fig 2 2 Control set up chart 2 7...
Страница 48: ...CO I o Fig 3 13 Delay and Timing Circuit logic block diagram Circuit Description Type 3B5...
Страница 61: ...GO i GO GO Fig 3 22 Seek Ciicuit Logic block diagram Circuit Description Type 3B5...
Страница 70: ...u k KJ Fig 3 29 Circuit conditions for Manual Mode operation Circuit Description Type 3B5...
Страница 71: ...w K w Fig 3 30 Circuit conditions for Seek Mode operation Circuit Description Type 3B5...
Страница 72: ...w I u U Fig 3 31 Circuit condition for External Mode operation Circuit Description Type 3B5...
Страница 88: ...Maintenance Type 3B5 Fig 4 9 Location of components on Logic Card 4 14...
Страница 89: ...u Oi Fig 4 10 Location of components on Counter Card Maintenance Type 3B5...
Страница 92: ...NOTES I...
Страница 104: ...NOTES...
Страница 106: ...Calibration Type 3B5 Fig 6 1 Recommended calibration equipment...
Страница 160: ......
Страница 176: ...J400 RtADOUT BOARD 3B5 PLUG IN A READOUT...
Страница 182: ...397 R E A D O U T B O A R D 10 6b READOUT BOARD...
Страница 184: ...FIG 1 FRONT SWITCHES TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Страница 185: ...FIG 2 CHASSIS REAR 3 GS to TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Страница 186: ...OPTIONAL ACCESSORIES...