Operating
Instructions—7A42
Figure
2-17.
Example of
A THEN B, level and EDGE sensitive TRIGGER FUNCTION, showing
the
Normal and
A THEN
B Gate waveform alternatives.
PROG CHAN/TRIG
The
PROG
CHAN/TRIG
pushbutton
selects
one of
two
modes,
PROG
CHAN
(program
channel)
or
PROG
TRIG (program
trigger).
In the
PROG
CHAN
mode
the
DISPLAY,
VOLTS/DIV,
GND,
1MΩ/50Ω,
TTL/ECL,
and
THRESH
pushbuttons
are
activated.
These
controls
are
used
with
the
CH1,
CH2, CH3
and
CH4
pushbuttons
to
individually
set
the
channel status.
In
the
PROG
TRIG
mode
CLEAR,
AND,
OR,
NOT, and EDGE
pushbutton
controls
are
activated
and
are
used
with
the
CH1,
CH2,
CH3,
and
CH4
pushbutton
controls
to
program
a
Boolean
equation
into
the
A
TRIGGER
FUNCTION
or B
TRIGGER
FUNCTION.
The
following
text
discusses first
the
PROG
CHAN
controls
and
then
the PROG
TRIG
controls.
PROGRAM
CHANNEL MODE
The
TTL/ECL,
VOLTS/DIV,
GND,
1MΩ/50Ω,
and
DISPLAY, controls
are
active
in
the
PROG
CHAN mode.
These
controls
are
used
with
the
CH1,
CH2, CH3,
and
CH4
pushbuttons
to
set
the
status
of
each
channel.
2-64