Agilent Technologies 54503A User's Guide Page 217

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Chapter 4 217
Key Function Descriptions
Key Descriptions
NOTE Amplitude units are not available in normalized mode.
ANALOG METHOD Makes adjacentchannel power (ACP) measurements
by measuring continuous power integration versus
frequency. Uses an analog method that measures the
power in the main and adjacent channels assuming a
continuous carrier. The rms power of that carrier is
detected using power detection. This is done by using a
video bandwidth that is much wider than the resolution
bandwidth. Then the power, not the log of the power, of
each measurement cell is added. This method is used
for measuring analog FM systems.
Front-panel key access:
MEAS/USER
ANALYZER ADDRESS Displays the current GPIB address of the
spectrum analyzer. A new address can be entered by
using the data keys (and pressing
ENTER), the step
keys, or the knob. You should press STORE HPIB ADR
once the GPIB address has been entered. If you do not
press STORE HPIB ADR, the redefined GPIB address
is retained if
PRESET is pressed, but not if the power to
the spectrum analyzer is turned off.
Front-panel key access: CONFIG
ANNOT HELP Defines the annunciators that appear in the special
functions area at the left side of the display screen. The
annunciators are:
A IF adjust turned OFF
C DC coupling selected (ac coupling is default)
D Detector mode set to sample, negative peak, or positive peak
E Special sweep-time equations in use (Refer to tracking
generator SWP CPL SR SA key for more information.)
F Frequency offset is less than or greater than 0 Hz
G Internal tracking generator is on
K Signal track is on
M Trace math is on
N Normalization is on
R Reference level offset is less than or greater than 0 dB
S Single-sweep mode
T
Trigger mode set to line, video, or external
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