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HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

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ACPGRAPH<br />

Compute the Adjacent Channel Power Graph<br />

Computes <strong>and</strong> displays an adjacent channel power (ACP) graph.<br />

Syntax<br />

Equivalent Softkey: none.<br />

Related Comm<strong>and</strong>s: ACP, ACPE.<br />

Example<br />

OUTPUT 718;"ACP;" Performs the adjacent channel power measurement.<br />

OUTPUT 718;"ACPGRAPH;" Creates a graph of ACP as a function of the frequency offset<br />

from the center-frequency.<br />

Description<br />

ACPGRAPH uses the ACP spectrum data that was obtained (in trace A) by the previous<br />

adjacent channel power or adjacent channel power extended measurement to generate the<br />

graph. (Use the ACP or ACPE comm<strong>and</strong> to perform the adjacent channel power measurement.)<br />

ACPGRAPH does the following:<br />

I Generates a graph of the adjacent channel power ratio, for the selected channel b<strong>and</strong>width,<br />

as a function of frequency spacing from the center frequency.<br />

� Places the graph in trace C. The units for all traces is determined by the trace data format<br />

(TDF) comm<strong>and</strong>.<br />

When the graph is generated, the reference level represents an adjacent channel power ratio of<br />

0, <strong>and</strong> the horizontal center represents a frequency offset (<strong>and</strong> channel spacing) of 0 Hz. The<br />

results of ACPGRAPH are not defined for frequency spacings where the graph is drawn below<br />

the bottom graticule line.<br />

5-42 Programming Comm<strong>and</strong>s

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