Rohde & Schwarz NRT 1080.9506.02/.62, Руководство по эксплуатации

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Short Introduction NRT
1080.9506.02 2.2 E-8
The default setup is stored in the setup memory under address 0 and can be recalled as described in
the following:
UTIL
Press this menu key.
Tf SAVE is underscored, use
the cursor key to select
RECALL .
LOCAL
SEL
Press input key; the numeric
entry is activated, the indi-
cated number starts to blink.
Press the cursor keys until 0
is displayed.
LOCAL
SEL
Pressing the input key termi-
nates the numeric entry and
sets the NRT to the default
setup.
FWD
PORT SENS
The display shown here is an example only. The actually indicated values depend on the power and the
matching in the test setup and on the sensor used. With an NAP sensor, there is no
PORT 2 indication
below the left bargraph and no carrier frequency indication @ 2270 GHz .
2.1.3 Measuring the Power
2.1.3.1 Unit Selectable in W or dBm
dBm
∆∆∆∆
====
W
The dBm /
∆
/ W key allows selection of the unit W or dBm for the power indication in the left
part of the display. At every third keystroke, the relative difference between the measured
power and the stored reference value is indicated in dB or % (see next section).
The dBm /
∆
/ W key is not effective for the complementary cumulative distribution function
(CCDF).
2.1.3.2 Measuring Relative Power Differences
∆∆∆∆
REF
dBm
∆∆∆∆ ====
W
The
∆
REF key can be used to store the currently measured power and use it as a reference
for a relative display. At the same time, the instrument switches to relative display. Immedi-
ately after pressing the key, 0.0 % or 0.0 dB should be displayed.
The dBm/
∆
/W key can be used to switch any time from the relative to the absolute readout
(in dBm or W) and vice versa.
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