Agilent Technologies E8257D, User Manual

Page: 55 / 318

Chapter 2 41
Basic Operation
Using the User-Defined RF Output Power Limit (Option 1EU, or 521 only)
Figure 2-2 User-Defined RF Output Limit Softkey Menu
The following example enables the RF Output power limit and changes the value to 20 dBm.
1. To change the RF output limit value:
Press
Amplitude > More > More > RF Output Limit Lock Adjust
to Adjust.
2. To change the RF output limit value:
Press
RF Output Limit > 20 dBm
By default, the RPG and increment/decrement controls are disabled to avoid accidental changing
of the RF output limit. Press the left/right cursor hardkeys to select a digit and enable the RPG
or use the keypad to enter the dBm. The minimum settable value is 15 dBm. The maximum
settable value is the unleveled power of the instrument. For settings accuracy, refer to the
Data
Sheet .
3. To prevent accidently changing the RF Output Limit level:
Press
RF Output Limit Lock Adjust
to Lock.
Amplitude > More > More
SCPI Commands:
To enable changing the RF output limit:
SCPI Command: [:SOURce]:POWer:LIMit[:MAX]:ADJust <ON|OFF|1|0>
SCPI Command: [:SOURce]:POWer:LIMit[:MAX]:ADJust?
To change the RF output limit:
SCPI Command: [:SOURce]:POWer:LIMit[:MAX] <ampl>
SCPI Command: [:SOURce]:POWer:LIMit[:MAX]?
This softkey is only
active when the RF
Output Limit softkey
is set to “Adjust”.
The default RF
Output Limit value is
shown in here.
When the amplitude
is within
1 dB of the RF
output limit value or
exceeds the RF
Output Limit value,
the value is
displayed in bold
text.