OPERATOR'S
SPECIFICATIONS
Refer to the service manual
for
complete
specifications.
Specifications
given are
for
an
operating
range
of
O° C to
+40°
C unless
otherwise
stated.
475A
OSCILLOSCOPE
VERTICAL
Deflection Factor Accuracy:
Within
3%
in the
calibrated
position
.
Frequency Response: Dc to at least 250
MHz
for
CH
1
and
CH
2.
AC-coupled,
low-frequency
response is 10 Hz
or
less. Use
of
a 10X
probe
extends
frequency
response to
1 Hz.
Risetime: 1.4
nanoseconds
or
less
(calculated
from
0.35
-:-
bandwidth
in MHz).
Maximum Input Voltage:
Dc-coupled
250 V (dc + peak
ac)
or
500 V
p-p
ac at 1 kHz
or
less;
ac-coupled,
500 V
(dc
+ peak ac)
or
500 V p-p ac 1 kHz
or
less.
Positive-Going Step Aberrations: Less
than
+3%,
-3%,
not to exceed
3%
peak-to
-peak,
excluding
the
ADD
mode.
Common-Mode
Rejection Ratio
(ADD
Mode with
CH
2
Inverted): At least 10:1 at 20
MHz
for
common
mode
signals of 6
divisions
or
less with
GAIN
adjusted
for
best
CMRR at
50
kHz.
Input Gate Current: 0.5
nA
or
less (0.1
div
at
5
mV/DIV),
from -
15°C
to
+30°C.
Channel Isolation: At least 100:1 at
25
MHz
.
CHOP
Mode Repetition Rate:
Approximately
250 kHz.
Cascaded Operation
(CH
2
OUT
into
CH
1)
sensitivity:
Approximately
2.5
mV/DIV
.
Bandwidth
is
dc
to at least
62
475A/DM44
Operators
@
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