Anritsu 3GPP, Руководство по измерениям

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W-CDMA/HSPA+ Signal Analyzer 3-10 Amplitude Menu
3GPP MG PN: 10580-00234 Rev. Y 3-27
3-10 Amplitude Menu
Key Sequence:
Amplitude
Scale: The scale can be set in 1 dB steps from 1 dB per division to 15 dB
per division. The value can be changed using the numeric keypad, rotary
knob, or the arrow keys. When using the keypad, the submenu changes to
Units, in which case, press the dB/div key to accept the entered scale value.
Power Offset: Enter the power offset to automatically adjust for the loss or
gain through any external cables, attenuators and couplers. The power can
be offset from 0 dB to 100 dB in either direction. Press the Power Offset key,
then enter a value using the arrow keys, rotary knob, or numeric keypad.
Note: When using the keypad, the submenu keys will change to Units keys
(dB) of External Loss and External Gain, as illustrated on the left, below the
Amplitude menu. Enter a value, then press the appropriate Units key to
make your selection. A negative offset value in external gain equates to the
same amount of external loss. For example, entering –1.0 dB in Ext Gain is
the same as 1.0 db of Ext Loss.
Auto Range: Press this submenu key to toggle the Auto Range function
between On and Off. When set to On, the instrument adjusts the reference
level automatically for each sweep.
Adjust Range: Press this submenu key to perform a single reference level
adjustment. Auto Range is automatically turned Off.
Unit: Changes the unit of measure for the Y-axis between dBm and W.
Figure 3-17. W-CDMA/HSPA+ Amplitude Menu
Amplitude
Power Offset
0.0 dB Ext Loss
Auto Range
On Off
Adjust
Range
Scale
10 dB/div
Unit
dBm W
Units
dB
External Gain
dB
External Loss
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