Agilent Technologies N8201A Service Manual download pdf (Page 283)

Analog Commands 9

Agilent N8211A/N8212A Performance Upconverter Synthetic Instrument Module, 250 kHz to 20 / 40 GHz 283

Frequency Modulation Subsystem ([:SOURce])

:FM[1]|2

Supported All

[:SOURce]:FM[1]|2

Enables the selection of the FM path and is associated with all SCPI commands in this

subsystem.

FM1 FM Path 1 2 with 1 selected

FM2 FM Path 1 2 with 2 selected

When just FM is shown in a command, this means the command applies to path one only.

Each path is set up separately. When a SCPI command uses FM1, only path one is affected.

Consequently, when FM2 is selected, only path two is set up. However, the deviation of the

signals for the two paths can be coupled.

Deviation coupling links the deviation value of FM1 to FM2. Changing the deviation value

for one path changes it for the other. These two paths can be on at the same time provided

the following conditions have been met:

• dual–sine or swept–sine is not the selection for the waveform type

• each path uses a different source (Internal 1, Internal 2, Ext1, or Ext2)

• FM2 must be set to a deviation less than FM1

:FM:INTernal:FREQuency:STEP[:INCRement]

Supported Option UNT

[:SOURce]:FM:INTernal:FREQuency:STEP[:INCRement]<num>|MAXimum|MINimum|

DEFault

[:SOURce]:FM:INTernal:FREQuency:STEP[:INCRement]?

Sets the step value for the internal frequency modulation.

The step value set by this command is used with the UP and DOWN choices for the

command “:FM[1]|2:INTernal[1]|2:FREQuency" on page 286.

The setting enabled by this command is not affected by a power-on, preset, or *RST

command.

Example

:FM:INT:FREQ:STEP 1E5

1 2 ... 278 279 280 281 282 283 284 285 286 287 288 ... 331 332

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Agilent Technologies N8201A Service Manual Page 283