HP 8590 E-Series User Manual

Decreasing the Frequency Span Using the Marker Track
Function
Using the spectrum analyzer marker track function, you can quickly decrease the span while
keeping the signal at center frequency.
Example: Examine a carrier signal in a 200 kHz span.
1. Press (PRESET], tune to a carrier signal, and place a marker at the peak. (If you are using the
CAL OUT signal, place the marker on the 300 MHz calibration signal. Press C-1,
300 m, ISPAN), 200 IMHz), and [PEAK SEARCH).)
Press @iGX%], MK TRACK ON OFF (ON) and the signal will move to the center of the
screen, if it is not already positioned there (note that the marker must be on the signal).
Because the marker track function automatically maintains the signal at the center of the
screen, you can reduce the span quickly for a closer look. If the signal drifts off of the
screen as you decrease the span, use a wider frequency span.
Press (SPAN), 200 IkHz). The span decreases in steps as automatic zoom is completed.
See Figure 3-7. You can also use the knob or step keys to decrease the span or use the
PEAK ZOOM function under ISPAN).
Press MK TRACK ON OFF again so that (OFF) is underlined to turn off the marker track
function.
Note
When you are finished with the example, turn off the marker tracking function.
b
MkR-TRK 300.0010 MHZ
REF 0 dB” ATTEN 10 dB
-20 04 d0rn
CINTER 300 0015 MHZ SPAN 200.0 kHZ
RE5 tlW 3 ~HL 'VBW 3 kHz CWP 100 msec
Figure 3-7. After Zooming In on the Signal
Making Basic Measurements 3-7

HP 8590 E-Series Specifications

General

Brand	HP
Model	8590 E-Series
Category	Measuring Instruments
Language	English