Performance
Check
—Type 3B5
Fig.
5-7.
Typical
CRT display showing correct registration. (A)
MANUAL
TIME/DIV switch set to .1 jus; (B) MANUAL TIME/DIV
switch
set to 50 ns.
d. CHECK—
Jitter
on
the
leading
edge
of
the
magnified
marker
does
not
exceed
0.3
division
(3
parts
or
less
per
10,000;
see
Fig.
5-6A).
Ignore
slow
drift.
e. Set
the
Delay
dial
to
9.00
and
then
rotate
the dial
and
POSITION
control
to
move
the
magnified
tenth marker
to
the center vertical line.
f.
CHECK
—
Jitter
on
the
leading
edge of
the
magnified
marker does
not
exceed
0.3
division
(3
parts
or less
per
10,000;
see
Fig.
5-6B).
12.
Check
Registration
REQUIREMENT
—
Less
than
one
division
shift
when
changing
from
0.1
μ
s/DIV
to
50
ns/DIV.
a. Change
the
following
control
settings:
MANUAL
TIME/DIV
Trigger
Function
LEVEL
Volts/Division
(amplifier
unit)
.1
μ
s
INT-AC
Triggered
display
0.2
Volts
b.
Set
the time-mark
generator
for
five
-
microsecond
markers.
c.
Move
the
marker
to
the
first graticule
line
with
the
POSITION control
(see Fig. 5-7A).
d.
Set
the
MANUAL
TIME/DIV
switch
to
50
ns.
e. CHECK
—
Marker
should
remain
within
±1
division
of
the
first
graticule
line
(see Fig. 5-7B).
13.
Check
Normal
and
Magnified
Timing
Accuracy
REQUIREMENT—
Normal
sweep:
1
s
to 10
ns,
within
±3%
with
correct
readout-panel
indication;
5
s
and
2
s,
within
±5%
with correct
readout-panel
indication.
a.
Connect
the
time-mark
generator
trigger
output
con
nector
to
the EXT TRIG
INPUT
connector
with
a
50-ohm
BNC
cable.
b.
Change
the
following
control
settings.-
DELAY
MANUAL
TIME/DIV
Trigger Function
LEVEL
0.00
10
μ
s
EXT-DC
Stable
display
c.
Move
the start of
the
trace
to
the
left vertical
graticule
line
with
the
POSITION
control.
d. Set
the time-mark generator for 20-nanosecond markers
(this
check can
be
made
only
with
an
amplifier
unit
which
has
a
bandpass
of
at
least
15
MHz).
e. Set
the
MANUAL
TIME/DIV
switch
to
10
ns.
First
Check timing
between first and
Ninth
graticule
ninth
graticule lines
graticule
line
line
Fig.
5-8. Typical CRT display
when checking
timing accuracy
(1 /is
to
50 ms). Waveform
shown was taken with MANUAL TIME/DIV
switch
set at 1
ms and DLY'D SWP
MAG
switch set to OFF.
5-7
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...
