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G E T T I N G
S T A R T E D
Harmonics Plot: This plots the fundamental through the 5th harmonic
⇒
on a single plot by taking the current center frequency or marker, and
capturing trace data at each multiple of the frequency.
Phase Noise Plot: This utility takes about 1 minute to run. It will
⇒
sweep several times, then combine the sweeps into a phase noise plot.
The data is approximate and is limited by the phase noise of the Signal
Hound itself. For best close-in phase noise, use an external 10 MHz
reference with > 10 dBm power level.
Self Test: To use the self test, connect the SELF TEST to the RF IN.
⇒
This checks the attenuator, mixers, broadband power detector, RF and
IF signal paths, and I/Q demodulator.
2.3.6
TRACE
Copy Trace A to...: Stores a copy of trace A (the main trace displayed)
⇒
into trace B or C. and displays the copied trace.
Show/Hide...: Displays or hides traces or trace math.
⇒
• Trace A, Trace B, Trace C: Shows or hides selected traces
• Trace B-A or A-B: Displays trace math on a new scale. You will
be prompted for scale information. A-B or B-A may be shown.
Limit Lines: Displays or hides a lower limit line and an upper limit line.
⇒
2.3.7
Utilities
Audio Listen: Opens a dialog box with controls for demodulating audio.
⇒
AM, FM, SSB and CW are available. For SSB, 30 KHz IF is recommended.
For best sensitivity, have your reference level set to -40 dBm and your
attenuator set to 0 dB before opening the Audio Listen dialog.
Broadband Signal Peaking is a mode that combines fast sweeping with high
⇒
sensitivity, for locating and peaking broadband (> 5 MHz bandwidth) low
level signals. The preamplifier is automatically turned on in his mode.
When selected, a dialog box opens. Select a frequency step of 1, 2, or 5
MHz. Check the "maximize sensitivity" box if you are hunting for a small
signal. This will set the reference level to -50 dBm and attenuator to 0 dB.
Please note that the waveform displayed represents a sampling of spectrum
above and below the frequency reported. The response is uncalibrated and
will yield unpredictable amplitudes for narrow-band signals. To resume
normal operation, click "Broadband Signal Peaking" a second time.
Channel Power: Opens a dialog box where you enter channel bandwidth
⇒
and spacing. To use, set the center frequency to the channel center
frequency, then set channel bandwidth and spacing. If channel power and
adjacent channel power all fit within the currently selected span, the selected
channel and adjacent channels will display their respective power levels, in
dBm.
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