Calibration—Type
3B5
32.
Check
Output
DC Level
a.
Set
the
Trigger
Function
switch
to
EXT-AC or DC (nc
trigger
signal
connected).
Connect
a
jumper
lead
(#18
01
#20
solid
wire) between terminals
1
and
13
of
the
PRO
GRAM
connector
(see
Fig.
6-32)
and
connect
a
20
k
Ω,
'/
2
watt
resistor
between
terminals
14
and
22.
(If
using
the
special circuit,
set
switch
to
external
horizontal.)
b.
Reduce
the
intensity
level
so
the
spot
is
just
visible
on
the
CRT.
c.
Move
the
spot
to
the center
of
the
CRT
with
the
POSI
TION
control.
d.
Connect
the
DC
voltmeter
between
the horizontal
deflection-plate
pins
on
the
indicator
oscilloscope
CRT.
Be
careful
not
to
bend
the
pins.
e.
Adjust
the POSITION control for a zero-volt
reading
on
the
voltmeter.
f. Disconnect
the
negative
lead
of
the
DC
voltmeter
and
connect
it
to ground
(set
meter
for
range
which
will
measure
180
volts).
g.
CHECK
—Meter
reading
for
+180 volts,
±10
volts
h.
Disconnect
the
DC
voltmeter.
NOTE
The
remaining
steps
in
this
procedure
verify
various
operating features
of
this
instrument
which
do not
directly
affect
instrument
performance
or
measure
ment
capability.
Fig.
6-32. Location of PROGRAM connector terminals used in steps
31
—35.
Fig.
6-33. Typical CRT
display when checking external horiiontal
operation.
33. Check
External Horizontal
Input
a. Connect
a jumper
lead
(wire)
from
the
indicator
oscillo
scope
calibrator
output
connector
to
terminal
4
of
the
PRO
GRAM
connector
(see
Fig.
6-32).
(If
using
the special
circuit,
connect
a
BNC
cable
from
the
calibrator
output
connector
to
the
external
horizontal
input
connector
and
switch
to external
horizontal.)
b. CHECK—
Two
dots
displayed
on
screen
about
two
divi
sions
apart
(deflection factor
about
five
volts/division;
see
Fig.
6-33).
c. Disconnect
all
connections
to
the
PROGRAM
connector
(special
circuit may
be
left in
place).
34.
Check
Single
Sweep
Operation
a. Set
the
MANUAL
TIME/DIV
switch
to
20
ms
and
the
Trigger
Function
switch
to
INT-AC.
b.
Connect
the
indicator
oscilloscope
calibrator
output
to
the
amplifier
unit
input
connector
with
a
BNC
cable.
c. Set
the
amplifier
unit
for about
four
divisions
of
verti
cal
deflection.
d. Set
the
LEVEL control for
a
stable
display.
e. Connect
a
jumper
lead
(wire)
between
terminals
7
and
18
(Caution;
+
125
volts)
of
the
PROGRAM
connector
(see Fig.
6-32).
(If
using
special circuit,
set
switch
to
single
sweep.)
f. CHECK
—
No
trace
is
displayed
but
the
NOT
TRIG'D
readout
remains
off.
g.
Connect
a
jumper
lead
to terminal
25
of
the
PROGRAM
connector
(see
Fig. 6-32).
Momentarily
touch
the
other end
of
the
jumper
lead
to
terminal
1.
(Disregard
this
step
for
special
circuit.)
6-29
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...
