Tektronix 2221 - Page 20

General
Information - 2221
Operators
Table 1-2 ( cont )
1
Characteristics
Performance Requirements
HORIZONTAL DEFLECTION SYSTEM
NON - STORE Sweep Rates
Calibrated
Range
Sweep
STORE
Mode
Ranges
NON -
STORE
Accuracy
+ 15 ° C to + 35 ° C
° C to + 50 ° C
0.5 s per division
to 0.05 us per
division in a
1-2-5
sequence of 22
steps . The X10 magnifier extends maximum sweep speed to 5 ns
per division . The
4K COMPRESS
multiplies
the
SEC / DIV by 4 .
See Table 3-2 for Modes and Ranges and Default Acquisition
Modes.a
Unmagnified
Magnified
Within 2 % Within + 3 %
Within
+ 3 % a
Within
+
4
% a
Sweep
accuracy
applies
over the
center
eight
divisions .
Exclude
the first 40 ns of the sweep for magnified sweep speed and any
thing
beyond the
100th
magnified
division .
+ 5 %
.
Linearity
measured over
any two of
the center
eight
divisions .
Exclude the first 25 ns and anything past the 100th division of the
X10
magnified
sweeps
.
Single
Trace
CHOP /
ALT
20 MHza
10
MHza
NON -
STORE
Sweep
Linearity
10
MHza
5
MHza
UU
10
MHz
10
MHz
Digital
Sample
Rate
5
us
per
division
( CHOP becomes ALT )
10 us
per
division
20 us per division to 5s per
division ( 50 % duty factor on
each
channel in
CHOP )
REPETITIVE STORE
0.05 us per division to
1
us
per
division
2
us
per
division
External Clock
Input Frequency
Digital
Sample
Rate
20
MHza
20
MHza
10
MHza
10
MHza
Up
to 1
kHz
.
니
10
MHz.a
Store Rate
Duty
Cycle
One peak detected data pair for every second falling edge.a
10 % or greater ( 100 us minimum hold time ) . a
TTL Compatible .
Ext Clock Logic Thresholds
Maximum Sate
Input Voltage A
25 V
( dc +
peak
ac ) or
25 V
p - p ac
at 1
kHz
or
less.a
Input
Resistance
>
20
k.22.a
aperformance
Requirement
not checked
in
manual
.
C
1-8