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H
52382-900A
Vol.
1
PERFORMANCE DATA
32.
FREQUENCY
Measureaent range
Frequency span
FULL span
]
l/DIVl
ZERO SPAN
METER
100
Hz to
400 MHz
in IHz
steps
set
by means
of
keypad, dedicated rotary control or
dedicated
REF FREQ keys.
Usable dovn
to 50 Hz.
0
to 400 MHz
spanning
the
10
division
display,
selected by FULL SPAN
key.
10
Hz/div
to
20
MHz/div
in
a
1,2,5 sequence
and
40
MHz/div selected
by
means
of
keypad
or
dedicated rotary switch.
Displayed accuracy
±1%
of
separation frequency,
-1% of full span.
1
to
7
decade logarithmic display.
User selects
Start and Stop frequencies (decade values
only)
and
instrument selects filter bandwidths and
sweep speeds
for
each decade
for
optimum display.
For
optimum display refresh,
the
highest
fre-
quency decade
is
swept first.
Displayed accuracy
±5 N%
where
N
is
the
number
of
decades selected.
Displays
the
amplitude
modulation
of
any signal
at
the current
reference frequency against
a
time
axis.
See
Sweep section
for specificat
Jon.
Selection
of
this mode
executes
a
single sweep
and leaves
a ''bar
chart"*
type
display
at
the
screen
centre, whose amplitude Indicates
the
instantaneous signal level
at
that
frequency.
Measurement frequency
changed with MARKERS MOVE
control.
For
frequency accuracy,
see
Marker
section.
FM DEMODj
[2nd FUNCT
ZERO
SPAN]
Frequency standard
Displays
the
instantaneous frequency deviation
of
a
single
sinusoid against
a
time axis.
This
signal must
be
free from significant amplitude
modulation
since filter
slope detection
is
used
as the
discriminator.
See Sweep section for
sped
ficatlon.
Internal standard
The internal
standard
is
a
TCXO
type with zero
warm-up
time.
Temperature stability
Better than
±2
parts
in 10^
over O^C
to 50^C.
Aging rate
Less than
±1
part in 10^
per year.
External adjustment
The Internal standard can
be
adjusted by means
of
a
rear panel preset
(SET
INI STD).
The
annota-
tion INT STD
is
shown
in
reverse video
on the
display when
the internal standard
has been
adjusted.
Sep. 85
Chap.
1
Page
9
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