Specification-2445A/2455A Service
Table
1-1 (cont)
Characteristics
Performance Requirements
AUTO LVL Mode Maximum Triggering Signal Period
A SEC/DIV Setting
<10
ms
At least 20 ms.a
10 ms
to
50
ms
At
least four times the A-SEC/DIV setting.a
>50ms
At
least 200 ms.a
AUTO Mode Maximum Triggering Signal Period
A-SEC/DIV Setting
<10ms
At
least 80 ms.a
10 ms
to
50
ms
At
least 16 times the A-SEC/DIV setting.
>50ms
At
least 800 ms.
AUTO LVL Mode Trigger Acquisition Time
Eight to 100 times the AUTO L VL Mode maximum triggering signal
period, depending on the triggering signal period and waveform.
Trigger Holdoff
Minimum The greater
of
the A-SEC/DIV setting value or 2 µs, within
+33%
to
-10%,
except 1
µS
at
5 ns/div. a
Variable Increases trigger holdoff time
to
1 0
to
25 times the minimum
holdoff.
SLOPE Selection Conforms
to
trigger-source waveform or ac power-source
waveform.
HORIZONTAL DEFLECTION SYSTEM
A Sweep Time Base Range 500 ms/div
to
10 ns/div
in
a 1-2-5 sequence
of
24 steps.
X10
MAG
extends maximum sweep rate
to
1 ns/div.
B Sweep Time Base Range 50 ms/div
to
10 ns/dlv
In
a 1-2-5 sequence
of
21
steps.
X1
O MAG
extends maximum sweep rate
to
1 ns/div.
Timing Accuracy
+15°C
to
+35°C
, A Sweep, with SEC/DIV
at
100 ms/div or
faster.
Sweep Accuracy Unmagnified
±(0
.7%
of
time interval + 0.6%
of
full scale).
þÿ”t
Accuracy With Cursors, Unmagnlfied
± (0.5%
of
time interval + 0.3%
of
full scale).
þÿ”t
Accuracy with Sweep Delay ± (0.3%
of
time interval +
0.1
%
of
full scale).
Delay Accuracy, A-Sweep Trigger
to
Start
of
B
±(0.3%
of
delay setting + 0.6%
of
full scale)
+o
to
-25
ns.
Sweep
B-Sweep Accuracy and
þÿ”t
Accuracy with Cursors
on
Add ± 0.3%
of
time interval
to
A-Sweep specifications.
B Sweep
•Performance requirement not checked In manual.
1-7
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