Chapter 2 General Operation
Using the front panel
20 9102 Handheld Spectrum Analyzer Software version 5.31
Other screen elements
The bar to the left of the vertical axis carries some or all of the elements
shown below:
A video trigger has been set at the power level indi-
cated. The icon also displays the slope of the trigger.
Demodulation is switched on so that the 9102 emits
the demodulated signal at the loudspeaker.
Table 7 Texts on the left-hand side
Text Meaning
Ref. Level Indicates the top-most level on the vertical (power)
axis. Can be modified with the R
EF function key.
dBm
dBμV
dBmV
dBV
V
mV
μV
mW
μW
dBμV/m
dBmV/m
dBV/m
V/m
mW/m
2
Shows the unit in which power, is displayed. Can be
changed in the
Level > Units menu. Units can be
switched between logarithmic and linear by pressing
the
Units softkey.
Logarithmic units are: dBm, dBμV, dBmV, dBV, dBμV/
m, dBmV/m, dBVm.
Linear units are: V, mV, μV, mW μW, V/m, mW/m
2
.
HOLD Indicates when measurements have been halted with
a press of the H
OLD/RUN function key.
Count The number following shows the progress of the mea-
surements, that means it indicates how many mea-
surements with the present configuration have already
been taken. The counter continues while the trace
hold mode is enabled. It is reset whenever a parame-
ter affecting the measurements is changed, that
means frequencies, filters or attenuation.
Ext. Dev. Indicates that the external device compensation is
turned on, that means the attenuation of any coupling
device is taken into account. The external device com-
pensation can be set up as shown in section “Com-
pensating gains and losses” on page 61.
UNCAL When displayed, the filter and sweep time setting do
not permit proper measurements.
Table 6 Icons on the display
Symbol Meaning
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