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Table
3.3 -
Frequency Measurement
1
.
2
.
3.
4.
5.
6
.
7.
Turn
power
on.
Select
FREQ
A,
FREQ
B, or
FREQ
C
(Option
41)
using
FUNCTION
keys
0).
If
FREQ
A
or
FREQ
B
is
selected, set the
AC/DC
coupling
0)
and
input
impedance
0)
as required.
Select the
X10
input
attenuation
(iso)
if
desired.
Attenuation
setting
is
automatic
in
the
Auto-Trigger
mode.
Connect
the
measurement
signal to
INPUT
A
(DC
to
160
MHz)
0)
,
INPUT
B
(DC
to 100
MHz)
@
,
or
INPUT
C
(40
MHz
to
1.3
GHz)(0.
Select a
specific
gate
time
(valid
range
of
200
jus
to 99.9
s)
if
desired.
For
small
numbers,
enter the gate
time
using the
exponential format.
The
displayed gate
time
will
be rounded
to
the
nearest
25.6
;us.
Use
key
sequence
<
value)
SHIFT (0)
STORE
(0)
GATE
(0)
.
Programmed
gate
times
are
immediately enabled
with
the resolution set accordingly.
Skip
step
7
if
step
6
is
being used
to
enter the gate time.
Use
the
RESOLUTION
H
keys
0)
to select
the required display resolution
and gate time
if
step
6
was
not used
(see
Table
3.12).
If
FREQ
A
or
B
is
selected, either select
AUTO-TRIG
(A
or
B)
0)
,
or
set
the trigger level
manually
using
key sequence
TRIG-LEVEL
(A
or
B)
0)
+/-
0)
<
value)
TRIG-LEVEL
(A
or B)
(tee).
Check
that
Input
A/B TRIG
LED
flashes.
3-20
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