Anritsu S820E - Page 124

3-56 PN: 10580-00343 Rev. H S820E UG
3-10 Measurement Menu Cable and Antenna Measurements
Measurement Menu (continued)
Standard (Shown on previous page.)
Advanced
Transmission (2-Port): Press this submenu key to
measure through the DUT. The Transmission measurement
between Port 1 and Port 2 is used to measure the loss (or
gain) in dB of a device. This measurement requires that the
device be connected directly (or through a test port cable) to
both ports of the instrument.
Transmission (Ext. Sensor): Press this submenu key to
measure through the DUT. The Transmission measurement
between Port 1 and an External USB Sensor is used to
measure the loss (or gain) in dB of a device. This
measurement requires that one port of the device be
connected directly (or through a test port cable) to Port 1 of
the Site Master. The second port of the device connects to
the External USB Sensor. This measurement is useful when
both ends of the device under test (DUT) are far away from
each other and cannot both be connected to the Site Master
at the same time.
Smith Chart: Press this submenu key to view the
measurement results in a Smith Chart. The Smith Chart is a
graphical tool that is used to plot the impedance of the device
connected to Port 1 of the Site Master. It converts the
measured reflection coefficient data into impedance data and
displays it in a manner that makes the Smith Chart a useful
tool for determining and tuning input match. This complex
impedance plot reveals which matching elements are
necessary to match a device under test to the reference
impedance (which can be set in the Amplitude menu to either
50 Ω or 75 Ω).
Figure 3-35. Measurement Menu
Measurement
Standard
Return Loss
St
an
da
Re
tu
rn
DTF
Return Loss
Cable Loss
VSWR
DTF VSWR
Advanced
Ad
v
a
n
c
Transmission
(Ext. Sensor)
Transmission
(2-Port)
Smith Chart
1-Port Phase
Display Format
Displa
y
Form
a
Single Dual
Active Display
Active Displ
ay
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