Specifications

Programming Guide 1-65
ESG Family Signal Generators Preparing for Use
Programming the Status Register System
The Data Questionable Modulation Status Group is used to determine the specific event
that set bit 7 in the Data Questionable Condition Register. The Data Questionable
Modulation Status Group consists of the Data Questionable Modulation Condition
Register, the Data Questionable Modulation Negative Transition Filter, the Data
Questionable Modulation Positive Transition Filter, the Data Questionable Modulation
Event Register, and the Data Questionable Modulation Event Enable Register. The Data
Questionable Modulation Condition Register contains the following bits:
Figure 1-36.
The Data Questionable Modulation Condition Register continuously monitors the
modulation status of the instrument. Condition registers are read-only. To query the
condition register, send the command STATus:QUEStionable:MODulation:CONDition?
The response will be the decimal sum of the bits which are set to 1.
Bit Description
0 A 1 in this bit indicates that the External 1 input, AC coupling on, is less than
0.97 volts.
1 A 1 in this bit indicates that the External 1 input, AC coupling on, is more than
1.03 volts.
2 A 1 in this bit indicates that the External 2 input, AC coupling on, is less than
0.97 volts.
3 A 1 in this bit indicates that the External 2 input, AC coupling on, is more than
1.03 volts.
4 A 1 in this bit indicates that the modulated signal is not calibrated.
5
−14 Unused. These bits are always set to 0.
15 Always Zero (0).