1-38
Making Measurements
Using Markers
1. Press .
2. Press and turn the front panel knob, or enter a value from the front panel
keypad to position the marker at a point of interest.
3. Press to automatically add or subtract enough line length to the
receiver input to compensate for the phase slope at the active marker position. This
effectively flattens the phase trace around the active marker. You can use this to
measure the electrical length or deviation from linear phase.
Additional electrical delay adjustments are required on devices without constant group
delay over the measured frequency span.
Figure 1-27 Example of Setting the Electrical Delay Using a Marker
Setting the CW Frequency 1. To place a marker at the desired CW frequency, press:
and either turn the front panel knob or enter the value, followed by a unit
terminator.
2. Press .
You can use this function to set the marker to a gai n peak in an amplifier. After pressing
, activate a CW frequency power sweep to look at the gain
compression with increasing input power.
Format
PHASE
Marker Fctn
MARKER→DELAY
Marker
Seq
SPECIAL FUNCTIONS
MKR
→
CW
MKR→CW FREQ