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Calibration Part
I-
7810
Performance
Check
A4.
CHECK
EXTERNAL TRIGGERING
SENSITIVITY
SETUP CONDITIONS
NOTE
If
the
preceding
step
was
not performed,
first
refer
to
the
Triggering
System
Preliminary
Control
Settings,
then
proceed
with
the
following
instructions.
a.
CHECK
-Set
the
TRIGGERING
MODE
to
AUTO
and
check
for
a stable
display
(TRIG'D
light
on)
with the
COUPLING
push
button
set
to:
1.
AC
2.
AC
HF REJ
3.
DC
(Set
TRIGGERING LEVEL
control
as
necessary).
b.
CHECK-Change
the
TRIGGERING SLOPE
to
(-)
and
repeat
part
a.
c.
Disconnect
the
low-frequency
function generator
from
the
10X
attenuator
and
connect
the
high-frequency
sine-
wave
generator
to
the
10X
attenuator
d.
Set the
SLOPE
to
{+)
and
the
TIME/DIV
switch
to
2
ns.
e.
Set the high-frequency
sine-wave
generator
for
a 5-
division
display
(50
millivolts) at
250
megahertz.
f.
CHECK
-For
a stable
display
(TRIG'D
light
on)
with the
COUPLING
switch
set
to:
1
AC
2.
AC
LF
REJ
3.
DC
(Set
the
TRIGGERING LEVEL
control
as necessary.)
g.
CHECK
—
Set the
SLOPE
switch
to
(-)
and
repeat
part
f.
h.
Set the
amplifier plug-in
unit deflection factor
to
50
millivolts/division
and
set
the high
frequency sine-wave
generator
for a
3-division display
(150
millivolts) at
1
GHz.
i.
CHECK
—
For a stable display
(TRIG'D
light
on)
with the
COUPLING
switch
set
to:
1
AC
2.
AC
LF
REJ
3
DC
(Set
TRIGGERING LEVEL
control
as necessary)
j.
CHECK
—
Set the
SLOPE
switch
to
(+)
and
repeat
part
i
k.
Set the
TRIGGERING
MODE
to
HF
SYNC
and
the
amplifier plug-in unit deflection factor to
1
0
millivolts/divi-
sion.
I.
Set
the high-frequency
sine-wave generator
for
a 7.5
di-
vision
display (75
millivolts)
at
1
GHz.
m.
CHECK
-
For
a stable display
(TRIG'D
light
on)
with
the
COUPLING
switch
set
to:
1.
AC
2.
AC
LF
REJ
3.
DC
(Set
the
TRIGGERING LEVEL
control
as necessary.)
n.
CHECK—
Set the
SLOPE
switchto(
•)
and
repeat
part
m
A5.
CHECK
INTERNAL TRIGGERING
SENSITIVITY
SETUP CONDITIONS
NOTE
If
the
preceding
step
was
not performed,
first
refer
to
the
Triggering
System
Preliminary
Control
Settings,
then
proceed
with
the
following
instructions.
5-10
REV SEP
1982
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