Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 801 / 2870

9 ACP Measurement
Source
RF Power
Allows you to adjust the power level of the source using the numeric keypad, step keys, or RPG. Pressing
any digit, 0 through 9, on the numeric keypad brings up the unit terminator.
Please refer to the "RF Power Range " on page 802 table below for the valid ranges.
Key Path
Source, Amplitude
Remote Command :SOURce:POWer[:LEVel][:IMMediate][:AMPLitude] <ampl>
:SOURce:POWer[:LEVel][:IMMediate][:AMPLitude]?
Example :SOUR:POW –100 dBm
Notes Amplitude corrections can be specified for use with the source. In the event of amplitude corrections
being applied, the valid ranges for the RF power do not change dependant on the current amplitude
correction setting. If the combination of RF power + amplitude correction is higher or lower than the
source output range, the Source Unleveled bit is set and the “Source Unleveled” indicator will appear
on status panel to indicate that the source cannot maintain the output power that has been
requested.
When signal generator is unable to maintain the requested output level, the “Source Unleveled”
indicator will appear on status panel. When the source output setting is restored to the normal range,
the “Source Unleveled” is removed from status panel.
Internal source has list sequence mode, which comprises of several steps which contain separate
output power, frequency and waveform etc. When the source list sequence playing is complete, the
last step keeps playing, and user can use this command to change the list sequence last step’s output
power.
The multiport adapter RFIO TX ports and GPS ports cannot ensure power accuracy when power
setting is lower than –130dBm, this power setting value is defined by the sum of RF Power setting
and related amplitude correction value. But user settable value could be lower than this limit. When
application detected there exists power setting lower than –130dBm on MPA RFIO TX ports, then
popup warning message . When application detected there exists power setting lower than –
130dBm on MPA GPS ports, then popup warning message . This is only warning message, and check
is performed when RF is ON.
Notes The Min and Max value here defined UI settable amplitude range. This range is larger than actual
amplitude range with level accuracy defined in spec.
Dependencies The RF power is dependent on the RF output port and frequency, such that the current frequency and
selected output port determine the valid range of power values.
Preset –100 dBm
Min The range of values depends on the current frequency and selected RF output port. Please refer to the
"RF Power Range " on page 802 table below for the valid ranges.
Max The range of values depends on the current frequency and selected RF output port. Please refer to the
"RF Power Range " on page 802 table below for the valid ranges.
Initial S/W Revision A.05.00
W-CDMA & HSPA Measurement Applications Reference 801