Operating instructions
Mainframe
Operating
Modes
The
time-base
unit
can be
operated
either
as
an
indepen-
dent
time
base
in
any
Tektronix
7700-,
7800-,
or
7900-
series
oscilloscope
mainframe, or
as
a
delayed-sweep
unit
in
those
mainframes
that
have
two
horizontal
compartments
.
A
companion
delaying
time-base
unit
is
required
for
delayed-
sweep
operation
.
Refer
to
the
delaying
time-base
unit
in-
struction
manual
for
additional
information
.
Fig
.
1-4
.
Area
of
graticule
used
for
most
accurate
time
measure-
ments
.
Fig
.
1-5
.
Operation
of
sweep
magnifier
.