Tektronix 2247A

Operators Familiarization
(CTR/TIMER PQ 2) GATED FREQ
GATED PERIOD
GATED WIDTH
GATED EVENTS
(BACK TO PREVIOUS MENU)
(TO C/T CONTROL MENU)
(C/T CONTROL) INTENSIFY GATE
INTENSIFY CTR
AUTO RESOL
X10 RESOL
X100 RESOL
C/T TRIG TIMEOUT
Gated
C/T
Menu
C/T
Control
Menu
C/T Control Menu
(Descriptions
are
applicable
for
timer
control
menu
also;
however,
INTEN-
SIFY
GATE
and
INTENSIFY
CTR
are
not
avallable
in
that
menu.)
The
C/T
control
menu
contains
measurement
modifler
functions
that
can
Increase
the
versatility
of
C/T
measurements.
The
first
two
menu
items
are
applicable
only
to
gated
C/T
measurements.
Only
one
of
these
two
items
can
be
selected
at
a
time.
INTENSIFY
GATE—When
a
C/T
measurement
is
first
called
up,
this
item
Is
selected
by
default.
When
selected,
an
Intensified
Zone
will
appear
on
the
A
sweep
display
of
the
channel
that
the
C/T
Is
measuring.
The
position
and
width
of
this
intensified
zone
can
be
altered
In
the
same
manner
as
In
gated
Volts
measurements.
The
C/T
will
only
measure
trigger
edges
that
occur
somewhere
Inside
this
zone.
INTENSIFY
CTR—When
this
Is
selected,
the
gate
signal
generated
by
the
C/T
hardware
will
control
the
position
and
width
of
the
Intensified
zone,
thus
providing
an
unambiguous
display
of
what
the
C/T
is
actually
measuring.
The
next
three
menu
Items
allow
the
selection
of
a
resolution
magnifier.
Only
one
of
the
three
may
be
selected
at
a
time,
All
C/T
measurements
except
FREQ
RATIO
and
TOTALIZE
can
utllize
resolution
magnifiers.
A
C/T
measurement
must
have
been
previously
selected
before
a
resolution
mag-
nifler
selection
will
have
any
effect.
AUTO
RESOL—Thls
Is
the
default setting
when
a
C/T
measurement
is
first
called
up.
The
C/T
uses
a
fixed
measurement
time
interval
(approximately
320
milliseconds,
or
1
period
of
the
trigger
signal,
whichever
Is
larger,
for
single
channel
measurements;
approximately
600
milliseconds
for
dual
channel
measurements).
The
resolution
of
the
measurement
is
then
calculated,
and
as
many
fully-resolved
digits
as
possible
are
displayed.
3-28
2247A
Operators
ue
£55
:
FOG
c