®
t::.
Control
Controls, Connectors,
and
Indicators
Positions the delta B-Sweep delay
or
time cursor
(dashed
vertical line) when either
t::.t
or
1/t::.t
is active.
When
t::.
V is active, the
t::.
control positions the delta
cursor (dashed horizontal line).
When a Save mode is active,
t::.
defines each character
in
a setup name definition and each attribute field
in
a
sequence step definition.
With the
available
CIT,
t::.
selects items
in
the
CIT
menu
and defines characters
in
event-count definition displays.
With the
WR,
t::.
defines characters
in
word-definition
displays.
With the available TV enhancement, the control
nomenclature includes "FLO LINE
#."
The control
selects
specific line numbers within a video field for
triggering the A
Sweep when trigger Coupling is set to
FLO 1, FLO
2,
or
alternate FLO 1-FLO
2.
Possible line
numbers range from 1 to the maximum number
of
lines
per frame in the television Signal. Rotating the control
clockwise
increases the line number; rotating it
counterclockwise decreases the
line number. Increasing
the line number above the number
of
lines
in
a field
or
decreasing the number below the minimum automatically
sets the
line number to the minimum or the maximum
in
the other field and selects the opposite FLO 1
or
FLO 2
coupling. In
AL
T, the coupling does
not
change and line
numbers are limited to the numbers shared by both
fields. See TV EXER
61
and TV EXER 62
in
Appendix A
to define the desired
line number format. For example,
the lines
in
a 525-line, interlaced-scan signal can be
numbered:
...
I 1 2
...
262 263 I 1 2
..•
261 262 I ...
or
... I 1 2
•••
262 263 I 264 265
...
524 525 I ...
With FLO 1
or
FLO 2 trigger coupling, the readout
displays the selected line number. The line number
readout is
followed by a 6 symbol if the 6 FLO LINE
# control is directed
to
line number selection. If the 6
symbol is not present, the control is directed
to
another function and the line number is fixed. The
control is redirected to line-number selection
or
back
to
a
t::.
function by pressing a Trigger Coupling button
or
the respective
t::.
button(s).
2465A/2455A/2445A Operators 5-17