Tektronix 2247A

J
Sa
EF
eS
*
Performance Characteristics
Table 6-1 (cont)
Electrical Characteristics
CHARACTERISTICS
PERFORMANCE
REQUIREMENTS
Rise/Fall
When
measurement
Is
first
selected,
or
measurement
Is
not
In
SET
REF
mode
when
reselected,
the
+
and
-
peaks
of
the
signal
are
measured.
Then,
the
trig-
ger
levels
are
set
and
the
rise/fall
time
measurement
proceeds.
Minimum Signal 4.0 divisions.
Amplitude for
Successful
Autotriggering@
Minimum Signal 25 Hz.
fe
frequency
for
\f
signal
frequency
Is
less
than
minimum,
Successful
Autotriggering@
SET
REF
mode
can
be
used
to
manually
set trigger levels.
Trigger
Level
Setting
Peak
measurement
error
+
trigger
level
Error
(after
readout
error
(in
divisions;
see
A
AND
B
autotriggering)*
TRIGGER
and
VOLTMETER
FUNCTIONS
PK-PK VOLTS).
Trigger
Level
Setting
Trigger
level
readout
error
in
divisions:
Error
(when
SET
REF
rise/fall
time
accuracy
Is
specified
with
mode
Is
used)@
respect
to
the
trigger
levels
selected
by
the
user
via
SET
REF
mode,
rather
than
the
10%
and
90%
points
on
the
signal
being
measured.
Range#
0
to
>
§
seconds.
1
Resolution®
+
Ti
X
TJE
at
start
point
t
+
1
—>j—=_—X_~—sC'TJE at stop point
VNt
+ LSD
“Performance
Requirement
not
checked
in
manual.
2247A
Operators
6-19