Tektronix 2236 - Page 10

บ
General
Information -
2236
Operators
Table
1-1
(
cont )
Characteristics
Performance
Requirements
Supplemental
Information
TRIGGER SYSTEM
A
TRIGGER
Sensitivity
External
trigger
signal from a
50 12
source
driving
a
50
12
coaxial
cable
terminated in 50 2 at the input connector .
C
C
C
P - P AUTO and
NORM Modes
A
Sweep
10
MHZ
60 MHZ
100 MHZ
Internal
0.35 div
1.2 div 1.5 div
Trigger
sensitivities
define
signal
amplitude
required
for
stable display
.
External
40 mV
150
mV
250 mV
Counter
Internal
0.5 div
1.5 div
2.0 div
External
50 mV
160
mV
C
300
mv
Lowest Useable Frequency in P - P
AUTO Mode
20 Hz with 1.0 division internal
or 100 mV external .
11
TV FIELD Mode
1.0
division of
composite
sync .
B
TRIGGER
Sensitivity (
Internal Only )
10 MHz 60
MHZ
100 MHz
U
B
Sweep
0.35 div 1.2
div
1.5 div
Counter
0.5 div 1.6 div
2.0 div
EXT INPUT
Maximum
Input
Voltage
400 V ( dc + peak ac ) or 800 V ac p - p
at 10 kHz or
less.a
رف
Input
Resistance
1 ΜΩ + 2 % .
Input Capacitance
22 pF +2.5
pF .
AC
Coupled
10 Hz or less at lower --3 dB point .
Offset
25 mV or less .
(
LEVEL
Control
Range
A
TRIGGER (
NORM )
INT
Can be set to any point of the trace
that can be
displayed .
C
C
EXT , DC At
least
+1.6
V ,
3.2 V p -
p .
EXT
,
DC =
10
At
least + 16 V ,
32 V p -
p .
B TRIGGER ( Internal only )
Can
be
set to
any
point of the
trace
that can be displayed .
;
VAR HOLDOFF Control
Increases A Sweep holdoff time by at
least a factor of
10 .
11
aSee Figure 1-1 for derating curve .
1-4
اب