General
lnformation-2230
Operators
Table 1-1 (cont)
Characteristics Performance Requirements
REPETITIVE Store Mode
SAMPLE
and
AVERAGE
Single Trace ALT
0.05
µS/div
100 MHz
(-3
dB)a
100 MHz
(-3
dB)a
0.1
µS/div
100 MHz
(-3
dB)a
50 MHz
(-3
dB)
0.2 µs/div to 2 µs/div
10
5
(5% maximum amplitude uncertainty)
Hz
Hz
SEC/DIV
SEC/DIV
ACCPEAK
0.05 µs/div
to
5 s/div Same
as
NON
STORE Bandwidth.
AVERAGE Mode
Sweep Limit
Adjustable from 1 to 2047 or
NO
LIMIT.
Weight of Last Acquisition
1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, or 1/256 (MENU selections).
AVERAGE mode default weight is 1
/4.
Resolution
Assuming uncorrelated triggers
and
greater than 1
LSB
of
the 8-
bit acquisition of vertical signal noise; the averaging weight for the
first acquistion
is
1,
the averaging weight for the second acquisi-
tion
is
1 /2
and
for n acquisitions
is
112n-
1
. The MENU selects
the least weight used. Maximum signal-to-noise improvement is
achieved after 2 x (weight factor) x (expected acquisitions
to
fill).
Frequency Response
Frequency response of the A VERA
GE
Storage Mode
is
a function
--
of the number of triggered acquisitions added to the weighted
average.
Time jitter of a signal with respect to the sample clock will pro-
duce a low-pass filter characteristic of
an
averaged waveform.
NON
STORE CHOP Mode Switching Rate
500 kHz ± 30%.
STORE Chop Rate
SAMPLE
50/(SEC/DIV) for sweep speeds from 5 s per division to
and
including 10
µs
per division.
PEAK DETECT
25/(SEC/DIV) for sweep speeds
from
5 s per division to
and
including 20
µs
per division.
5 µS/div through 0.05
µS/div
No
CHOP
mode; acts
as
in
ALT.
AID Converter Linearity Monotonic with no missing codes.
STORE Mode Cross Talk
<2%
measured
in
CHOP at 10 µs/div
and
10 mV/div using a
100 kHz square wave signal
vertically centered
and
the other
input coupling set to ground.
8
0ne-hundred
MHz
bandwidth is derated
for
temperature outside
0°C
to
35°C
and at 2 mV/div VOLTS/DIV as for
NON
STORE.
1-5
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