Agilent Technologies 4395A, Manual Change

Page: 464 / 575

4 Cal 5
Front P anel K ey Description
4 Cal 5
Network Analyzer
???????????????????????????????????????????
CORRECTION on OFF Turns error correction on or o. The analyzer uses the most recent calibration data for the
displayed parameter .
?????????????????????????????????????
CALIBRA TE MENU ! See NA
Cal menu
Displays the menu that provides several accuracy enhancement procedures ranging from a simple
frequency response calibration to a full two-port calibration. At the completion of a calibration
procedure , correction is automatically turned on, and the notation \Cor" or \C2" is displayed at
the left of the screen.
? ??????????????????????????????????????????????????
RESUME CAL SEQUENCE Eliminates the need to restart a calibration sequence that was interrupted to access some other
menu. Goes back to the point where the calibration sequence was interrupted.
????????????????????????????????
CAL KIT [7mm] ! See NA Cal
kit menu
Displays the menu that selects one of the default calibration kits available for dierent connector
types . This in turn displays additional softkeys used to dene calibration standards other than
those in the default kits (see \Modifying Calibration Kits" in Appendix A). When a calibration kit
has been specied, its connector type is displayed in brackets in the softkey label.
? ???????????
MORE
??????????????????????????????????????
PORT EXTENSIONS Goes to the reference plane menu that extends the apparent location of the measurement
reference plane or input.
??????????????????????????????????????????
EXTENSIONS on OFF T oggles the reference plane extension mode . When this function is on, all extensions dened
below are enabled; when o, none of the extensions are enabled.
???????????????????????????????????????????
EXTENSION INPUT R A dds electrical delay in seconds to extend the reference plane at input R to the end of the cable .
This is used for all R input measurements (including S-parameters).
???????????????????????????????????????????
EXTENSION INPUT A A dds electrical delay to the input A reference plane for all A input measurements (including
S-parameters).
? ??????????????????????????????????????????
EXTENSION INPUT B A dds electrical delay to the input B reference plane for all B input measurements (including
S-parameters).
? ????????????????????????????????????????
EXTENSION PORT 1 Extends the reference plane for measurements of S
11
, S
21
, and S
12
.
?????????????????????????????????????????
EXTENSION PORT 2 Extends the reference plane for measurements of S
22
, S
12
, and S
21
.
? ????????????????
RETURN
?????????????????????????????????????
VELOCITY F A CTOR Enters the velocity factor used by the analyzer to calculate equivalent electrical length.
???????????????
SET Z0 Sets the characteristic impedance used by the analyzer in calculating measured impedance with
Smith chart markers and conversion parameters . If the test set used is an 85046B test set, or an
87512B Transmission/Reection T est Kit, set Z
0
to 75 . Characteristic impedance must be set
correctly before calibration procedures are performed.
??????????????????????????????????????????????????????
ELECTRICAL DELA Y MENU Displays softkeys to add or subtract a linear phase slope relative to frequency or a constant phase .
?
?????????????????????????
MKR!DELA Y Enters the group delay at the marker point of a xed frequency aperture , 20 % of the span, to the
electrical delay to balance the phase of the DUT . This eectively attens the phase trace around
the marker and can measure electrical length or deviation from linear phase . A dditional electrical
delay adjustment is required for DUT s without constant group delay over the measured frequency
span. Because this feature adds phase to a variation in phase versus frequency , it is applicable
only for ratioed input
? ???????????????????????????????????????
ELECTRICAL DELA Y A djusts the electrical delay to balance the phase shift of the DUT .
???????????????????????????????
PHASE OFFSET A dds or subtracts a phase oset that is constant with frequency (rather than linear). This is
independent of
??????????????????????????????????
MARKER!DELA Y and
????????????????????????????????????????
ELECTRICAL DELA Y
?
????????????????
RETURN
?????????????????
RETURN
B-16 Softkey Reference