Keysight E4428C ESG RF Programming Manual page 203

Data Questionable Power Condition Register
The Data Questionable Power Condition Register continuously monitors the hardware and firmware
status of the signal generator. Condition registers are read only.
Table 4-11 Data Questionable Power Condition Register Bits
Bit Description
a Reverse Power Protection Tripped. A 1 in this bit position indicates that the reverse power protection (RPP) circuit
0
has been tripped. There is no output in this state. Any conditions that may have caused the problem should be
corrected. Reset the RPP circuit by sending the remote SCPI command: OUTput:PROTection:CLEar. Resetting the RPP
circuit bit, resets this bit to 0.
1 Unleveled. A 1 in this bit position indicates that the output leveling loop is unable to set the output power.
b IQ Mod Overdrive. A 1 in this bit position indicates that the signal level into the IQ modulator is too high.
2
c Lowband Detector Fault. A 1 in this bit position indicates that the lowband detector heater circuit has failed.
3
4−14 Unused. These bits are always set to 0.
15 Always 0.
a
In the N5161A/62A/81A/82A with Option 506, the N5183A, and the E4428C/38C with Option 506, this bit is set to 0.
b
In the N5161A/62A/81A/82A/83A, E4428C, E8257D/67D, and E8663B, this bit is set to 0.
Table 4-12 Data Questionable Power Condition Register Bits
Bit Description
0 Reverse Power Protection Tripped. A 1 in this bit position indicates that the reverse power protection (RPP) circuit
has been tripped. There is no output in this state. Any conditions that may have caused the problem should be
corrected. Reset the RPP circuit by sending the remote SCPI command: OUTput:PROTection:CLEar. Resetting the RPP
circuit bit, resets this bit to 0.
1 Unleveled. A 1 in this bit position indicates that the output leveling loop is unable to set the output power.
2−14 Unused. These bits are always set to 0.
15 Always 0.
Query:
STATus:QUEStionable:POWer:CONDition?
Response: The decimal sum of the bits set to 1.
Data Questionable Power Transition Filters (negative and positive)
The Data Questionable Power Transition Filters specify which type of bit state changes in the
condition register set corresponding bits in the event register. Changes can be positive (0 to 1) or
Keysight Signal Generators Programming Guide
Programming the Status Register System
Status Groups
195