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4-8 MS278XB OM
Amplitude Menu
The Amplitude menu lets you set the reference level, attenuation level, attenuation mode, and scale-per-
division of the graticule’s Y-axis.
Table 4-5. Amplitude Menu
Reference Level: The reference level is set at the top line of the graticule. To change
the value, press in the Reference Level parameter field and enter a new value using the
numeric keys. When a new value is entered, the terminator fly-out will appear with the
available units. Press on the desired units to terminate the entry.
Range: 30 dBm to –150 dBm (does not include Reference Offset)
Resolution: 0.01 dB
Default: 0 dBm
The following unit terminators are supported when the appropriate amplitude units are
selected:
dBm, dBmV, dBµV, W, mW, µW, nW, pW, fW, aW, V, mV, µV, nV
Attenuation Level and Mode: To change the manual attenuation level, press in the
Attenuation Level parameter field and enter a new value using the numeric keys. When a
new value is entered, the terminator fly-out will appear with the available units. Press on
the desired units to terminate the entry.
Range: 0 dB to 62 dB
Resolution: 2 dB
Default: Auto
Terminators: dB or Cancel
To toggle the internal RF attenuation mode between Manual or Auto, press the
Manual/Auto button.
Scale/Div: The Scale/Div parameter sets the number of units indicated for each major
graticule division. This parameter only applies if the Scale Type is set to Log, otherwise
the selection is grayed out. To change the value, press in the Vertical Scale parameter
field and enter a new value using the numeric keys. When a new value is entered, the
terminator fly-out will appear with the available units. Press on the desired units to
terminate the entry.
Range: 1 to 20 dB
Resolution: 1 dB
1 dB (for 1 to 20 dB range)
Default: 10 dB/division
Terminators: dB or Cancel