Programming instructions

Programming the Status Register System
Status Groups
Chapter 3136
Data Questionable Modulation Condition Register
The Data Questionable Modulation Condition Register continuously monitors the hardware
and firmware status of the signal generator. Condition registers are read-only.
Data Questionable Modulation Transition Filters (negative and positive)
The Data Questionable Modulation 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 negative (1 to 0).
Table 3-10 Data Questionable Modulation Condition Register Bits
Bit Description
0
Modulation 1 Undermod. A 1 in this bit indicates that the External 1 input, ac coupling on,
is less than 0.97 volts.
1
Modulation 1 Overmod. A 1 in this bit indicates that the External 1 input, ac coupling on, is
more than 1.03 volts.
2
Modulation 2 Undermod. A 1 in this bit indicates that the External 2 input, ac coupling on,
is less than 0.97 volts.
3
Modulation 2 Overmod. A 1 in this bit indicates that the External 2 input, ac coupling on, is
more than 1.03 volts.
4
Modulation Uncalibrated. A 1 in this bit indicates that modulation is uncalibrated.
5−14 Unused. This bit is always set to 0.
15 Always 0.
Query: STATus:QUEStionable:MODulation:CONDition?
Response: The decimal sum of the bits set to 1
Commands:
STATus:QUEStionable:MODulation:NTRansition <value> (negative
transition), or STATus:QUEStionable:MODulation:PTRansition <value>
(positive transition), where <value> is the sum of the decimal values of the bits
you want to enable.
Queries:
STATus:QUEStionable:MODulation:NTRansition?
STATus:QUEStionable:MODulation:PTRansition?