Using The Marker Delta Function; Using The Marker To Peak/Peak Function - HP 8590 E-Series User Manual

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.
R E F
PEAK I
CENTER
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 to place a marker on the peak.
REF
LOG
10
S C F C
C E N T E R 900 MHz
Figure 3-13. Using the Marker Delta Function
12 MhR 1992
I
1
RES 8W 3.8 NHz
MKA A 2!97
MHz
- 1 3 . 4 3 dB
- 4 4 . 9 1 dB
I
SPAN 1.919 GHz
38.4
Making Basic Measurements 3-13