Tektronix DD 501 Instruction Manual page 12

Specification—
DD
501
Table
2-1 (cont)
Characteristic
Performance Requirement
Supplemental
Information
RESET
Resets
start
gate
and
events counter
circuits
EVENTS
Deiay Count Range
0 to
99999
Throughput Time
30 ns or
less
Deiayed
Trigger Out
Pulse Width (max)
Up
to 6 ns greater than the events
pulse width
Amplitude
At
least
1
V
into
50
ohms
From
+0.8
to
+2.2
V
into
3
TTL
loads
(approximately 5
mA)
Source Impedance
Logic
1
approximately 50
ohms
Logic 0 approximately 200
ohms
TRIG'D
Indicator
Indicates trigger out
Physical Characteristics
Size
Fits
all
TM
500-Series power module
plug-in compartments. (See
Fig. 2-1.)
Weight
716.5
grams
(1.58
pounds)
Environmental
Characteristics
Refer
to
the specification
for
the associated power
moduie.
2-2
REV.
A,
NOV
1975