User`s guide
MKA A
2!97
MHz
4
REF
PEaK
LOG
10
dB/
0 dEm
ATTEN
10
dB
-13.43 dB
WA
SB
SC FC
COAR
CENTER
900
MHz
SPQN
1
600
GH.?
RES
EW
3
MHZ
VBW
1
MHZ
SWP
20
msec
Figure 3-13. Using the Marker Delta Function
5.
The MARKER
-+PK-PK
softkey
can be used to find and display the frequency and amplitude
difference between the highest- and lowest-amplitude signals. To use this automatic
function, press
(MKR--t),
More 1 of 2 ,
M&RKER
-+PK-PK
. See Figure
3-14.
16:21:03
12
MhR 1992
&
NKR
A
86 MHz
REF
.B
dBm
RTTEN
18
dB
-44.91 dB
PEAK I
I
LOG
18
dB/
:
."'
'.
.'.
I
'I'
:
"
I'":&
d8
1
,,,..
1
.,.,,,,,I..,,,;
,,,,,,..,,,,,,,...,,,.,......
1
CENTER I.121 GHz
SPAN 1.919 GHz
RES
8W
3.8 NHz
UBW
1
NHz
SWP 38.4
nts.ee
RT
Figure 3-14. Using the Marker to Peak/Peak Function
The frequency and amplitude differences between the signals appear in the active function
block. In addition, the
softkeys
accessed by
(s)
appear on the screen.
Example: Measure the frequency and amplitude difference between two signals that do not
appear on the screen at one time. (This technique is useful for harmonic distortion tests when
narrow span and narrow bandwidth are necessary to measure the low-level harmonics.)
1. Connect the spectrum analyzer CAL OUT to the INPUT
5OQ
(if you have not already done
so). Press
[PREsETI,
(FREQUENCY), 300
m,
(SPAN) and the step down key
(a)
to narrow
the frequency span until only one signal appears on the screen.
2. Press
(PEAK
SEARCH)
to place a marker on the peak.
3.
Press MARKER A to identify the position of the first marker.
Making Basic Measurements 3-13