Agilent Technologies E4438C Manual de instrucciones descargar pdf (Pagina 142)

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

Modulation 1 Undermod. A 1 in this bit indicates that the External 1 input, ac coupling on,

is less than 0.97 volts.

Modulation 1 Overmod. A 1 in this bit indicates that the External 1 input, ac coupling on, is

more than 1.03 volts.

Modulation 2 Undermod. A 1 in this bit indicates that the External 2 input, ac coupling on,

is less than 0.97 volts.

Modulation 2 Overmod. A 1 in this bit indicates that the External 2 input, ac coupling on, is

more than 1.03 volts.

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?

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Agilent Technologies E4438C Manual de instrucciones Pagina 142