Section 2 Specification - Tektronix DD 501 Instruction Manual

Section 2
—
DD
501
SPECIFICATION
INTRODUCTION
The
following electrical
characteristics
are valid
over the stated
environmental range
for
instruments calibrated at
an
ambient temperature of
+20°
C
to
+30°
C,
and
after
a 5-minute
warmup unless otherwise noted.
Limits
and tolerances given
in
the
Supplemental Information
column
are provided for
user information only,
and
should not be interpreted
as
Performance Requirements.
TABLE
2-1
Electrical
Characteristics
Characteristic
Performance Requirement
Supplemental
Information
EVENTS
and
START
Input
Resistance
and
Capacitance
1
MO
paralleled with 20
pF
(variable)
Slope
+
or
—
,
selectable
Sensitivity
85
mV
p-p
minimum
at
30
MHz;
120
mV
p-p
minimum
at
65
MHz.
Trigger
Level
Range
-1.0 V
to
+1.0
V
Frequency Response 0 to
65
MHz
Pulse Width
(minimum) 5 ns
TRIG VIEW
Output
At
least 0.5
V
Permits viewing
of
all
shaped
triggers
Source Impedance
200
Q
or less
T
rigger
LEVEL IN/OUT
Monitor
Jack
Probe-tip
jack—
aliows monitoring
comparator voltage of
preset or trigger
level to
within
25
mV.
Source Impedance
Approximately
1
kQ
TRIG'D
Indicator
EVENTS Visual indication of triggering
START
Visual indication that start
gate
is
open
LEVEL
Controls
0 Volt
Trigger Level
Within 30°
of
mechanical zero
START
Pulse
Lead
Time
Simultaneous
or
ahead
of the
EVENTS
pulse
Recycle
Time
50 ns or
less
Paralleling
START
and
EVENTS
INPUTS
determines
maximum
-h
N
+
1
frequency
REV. A,
NOV
1975
2-1