General Information
—7A42
TABLE
1-2
(CONT)
Electrical
Characteristics
Characteristic
Performance
Supplemental
Requirement
Information
TRIGGER
(CONT)
Mainframe
Trigger
Output
(cont)
Centering,
1
MHz
square
wave
Mean value
of
square
wave
within
one
division
of
graticule center.
Risetime,
10%
to
60%
2
ns
±1
ns.
Falltime,
90%
to
40%
2
ns
+1
ns.
A TRIGGER
OUT
Connector
Output
Voltage
Logic
Zero
<0.2
V
into
50
ohm
load.
Logic
One
>0.8
V
into
50
ohm
load.
Output
Impedance
Approximately
50
ohms.
Toggle
Frequency
125
MHz
maximum.
A
Mode
or
B
Mode,
with
displayed
input
signal
of
60
mV p-p
in
ECL
or
300
mV
p-p
in
TTL
Logic
Family,
centered
at
threshold.
Propagation
Delay
Channel
Input to
Trigger
Output
25
ns or
less.
Differential
Propaga
tion
Delay from
Channel
Input to
Trigger
Output
through
any
Trigger
Function
5
ns
or
less.
1-17
