Key Sequence: Amplitude
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Press this submenu key to set the scale of the Y axis on the measurement display. Scale can be set from 1 dB / div to 15 dB / div. The default value changes from 10 dB / div to 1 dB / div when the Spectral Flatness view is selected.
The Scale/div submenu key only appears when making
EVM vs. Subcarrier and EVM vs. Symbol measurements. All other measurements use the dB/div Scale menu. Power Offset
Press this submenu key to have the instrument automatically adjust for the loss through any external cables, attenuators, or couplers. The power can be offset from – 100 dB to + 100 dB. To set a power offset, press the Power Offset submenu key, use the rotary knob, the arrow keys, or the numeric keypad to enter the offset values, and press the dB submenu key or the Enter key.
Auto Range
Press this submenu key to toggle the auto range function On and Off. The active state is underlined on the submenu key face. When Auto Range is activated (the default state), the reference level is automatically adjusted (automatic gain ranging).
Adjust Range
When Auto Range is set to the OFF state, press this submenu key to adjust the internal reference level to be optimal, based on the measured signal. The Range adjustment is performed once each time the submenu key is pressed. When Auto Range is set to On, pressing this submenu key causes Auto Range to be set to Off.
Note: When the Adjust Range submenu key had been pressed, the instrument no longer adjusts the internal gain automatically because Auto Range has been set to Off by pressing this submenu key. Press the Auto Range submenu key to toggle its setting to On in order to resume automatic gain ranging.
Y‑Axis Max
Press this submenu key to set the maximum value of the Y‑axis. In combination with the Scale control, this setting allows you to zoom in and zoom out on the Y‑axis.
This control is available in only 4 measurements: OTA Channel Power Monitor and Demodulator Spectral flatness, EVM versus Sub Carrier, and EVM versus Symbol. When the instrument is set up for other measurements, this submenu key is not displayed.
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