Tektronix 7B10 Instruction Manual page 71

Calibration Part II—
7B10
Adjustment and Performance Check
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
LF
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
10
millivolts/division
l.
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
TRIGGERING LEVEL
control as necessary)
n
CHECK—
Set the
SLOPE
switch
to
(-)
and
repeat
part
m
A7.
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.
a.
CHECK
-Set the
TRIGGERING
MODE
to
AUTO
and
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.)
b
Change
the
TRIGGERING SLOPE
to
(-)
and
repeat part
a
c.
Disconnect the low-frequency function generator and
connect
the
high-frequency sine-wave generator
to
the
amplifier plug-in unit input.
d.
Set the
SLOPE
to
(+)
and
the
TIME/DIV
switch
to
2
ns.
e Set the high-frequency sine-wave generator and
the
amplifier plug-in unit deflection factor
for a
0
5-division
display
at
250
megahertz
(use
10X
attenuator)
5-20 REV JUN
1981