To Use Smith Chart Markers - Agilent Technologies 8753ET User Manual

To Use Smith Chart Markers

For greater accuracy when using markers in the Smith chart format, activate the discrete marker mode.
Press
Marker Fctn MKR MODE MENU
To use Smith chart format:
1. Press
Format SMITH CHART
2. Press
Marker Fctn
knob, or enter a value from the front panel keypad to read the resistive and reactive components of the
complex impedance at any point along the trace. This is the default Smith chart marker.
The marker annotation tells that the complex impedance is capacitive in the bottom half of the Smith
chart display and is inductive in the top half of the display.
• Choose
LIN MKR
reflection coefficient at the marker.
• Choose
LOG MKR
the reflection coefficient at the active marker. This is useful as a fast method of obtaining a reading of
the log magnitude value without changing to log magnitude format.
• Choose
Re/Im MKR
the marker as a real and imaginary pair.
• Choose
R+jX MKR
resistance and reactance, in ohms) at the marker. Also shown is the equivalent series inductance or
capacitance.
• Choose
G+jB MKR
form. The active marker values are displayed in terms of conductance (in Siemens), susceptance, and
equivalent parallel circuit capacitance or inductance. Siemens are the international unit of
admittance and are equivalent to mhos (the inverse of ohms).
Figure 1-21 Example of Impedance Smith Chart Markers
MARKERS:DISCRETE
.
MARKER MODE MENU
if you want the analyzer to show the linear magnitude and the phase of the
if you want the analyzer to show the logarithmic magnitude and the phase of
if you want the analyzer to show the values of the reflection coefficient at
to show the real and imaginary parts of the device impedance (the series
to show the complex admittance values of the active marker in rectangular
.
SMITH MKR MENU
Making Measurements
Using Markers
and turn the front panel
1- 33