HP ESG Series - Ampl Offset; Ampl Ref Set

5-22
Hardkey and Softkey Reference
Ampl
NOTE: An alternative to setting the ALC off is to set the ALC bandwidth to narrow. See the
ALC BW Normal Narrow softkey in the this section.
Softkey Location: Press Ampl, ALC Off On
Status after Normal Preset: On
SCPI Commands:
[:SOURce]:POWer:ALC[:STATe] ON|OFF|1|0
[:SOURce]:POWer:ALC[:STATe]?
Ampl Offset
Press this softkey to set a value for amplitude offset. An amplitude offset changes
the value shown in the amplitude area of the display but does not affect the output
power. For example, if the current output power is 0 dBm and you enter an
amplitude offset of
−3 dBm, the output power will remain at 0 dBm but the
display will show an amplitude of
−3 dBm. This feature lets you simulate the
power level at a test point beyond the RF OUTPUT connector.
An amplitude offset can be entered at any time during normal operation and also
when you are operating in amplitude reference mode. To enter an offset, press
Ampl Offset and enter the desired offset value using the up and down arrow keys,
the front panel knob, or enter a value using the numeric keypad and press the
dB
terminator softkey. When a non-zero offset has been entered, the
OFFSET
indicator is turned on in the amplitude area of the display.
Softkey Location: Press
Ampl, More 1 of 2, Ampl Offset
Status after Normal Preset: 0.00 dB
SCPI Commands:
[:SOURce]:POWer[:LEVel][:IMMediate]:OFFSet <val><unit>
[:SOURce]:POWer[:LEVel][:IMMediate]:OFFSet?
Ampl Ref Set
This softkey sets the current output power as an amplitude reference value. It also
causes the
Ampl Ref Off On softkey to toggle to the On position, turning on
amplitude reference mode. All amplitude parameters are then set as relative to the
reference value.
Softkey Location:
Ampl, More 1 of 2, Ampl Ref Set