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Specification
-
494A!494Ap
Service,
Vol.
1
Characteristic
Reference
Level (continued)
SEt With
DATA
ENTRY
buttons
Vertical
Display
Modes
Display
Dynamic
Range
Accuracy
10
dB/div
Log
Mode
2 dBldiv
Log
Mode
Linear
Mode
RF
Attenuatol
Range
Accuracy
Dc
to 1.8
GHz
1.8
GHz to
'l8
GHz
18
GHz
to 2'l
GHz
Marker(s)
Accuracy
Mode)
(Normal
or
Delta
Gain
Variation
Bandwidths
Between
Resolution
3
MHz Fi
Table
2-2 (Continued)
AMPLITUDE
RELATED
CHARACTERISTICS
Supplemental
Information
push-
Steps correspond
to the
disptay
mode in
coarse;
except,
tor
2
dB
when
the steps are
1
dB.
In Fine
Mode:
1 dB when
the
mode
is
5 dB/div
or
more
0.25
dB for
display
modes
of
4
dB/div
or less
(referred
to
as
Delta
A Mode)
10
dB/Div,
2 dB/Div,
and Linear
-
any
integer
between
1-1
5
dBlDiv
can
also
be selected with
the DATA
ENTRY
pushbuttons.
90
dB maximum
for Log
mode
slons
for Linear
mode
+4.0
dB maximum
cumulative
error
over
90
dB range
0-60
dB in
10 dB
steps
When
activated,
the marker
is
a
bright
dot
positioned
by the
CENTER/MARKER
FREQUENCY
control,
ldentical
to REF LEVEL
accuracy
plus
cumulative
error
of
display scale
(dependent
on
vertical
position)
Measurement
conditions:
o
measured
at
-20
dBm
o
Minimum
Distortion
Mode
o
after
front-panel
CAL
adjustments
2-8
*1.0
dB/l0
dB to a
maximum cumu-
lative
error
of *2.0
dB
over
B0 dB
range
40,4
dBP.A
dB
to
a
maximum
cumulative
error
o,f
+1.0
dB over 16
dB
range
t5o/"
ot
full
scale
Within
0.5
dB/10
dB
to
a
maximum
of
1
dB
over
the
60
dB range
Within
1.5
dB/10
dB
to a maximum
of
3 dB
over
the
60
dB range
Within
3.0
dB/10
dB
to a
maximum
of
6
dB over
the
60
dB range
<
i0.4
dB
Two
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