Agilent Technologies N8201A Service Manual download pdf (Page 330)

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

10 Digital Modulation Commands

:SRATio

Supported N8212A

[:SOURce]:DM:SRATio <val><units>

[:SOURce]:DM:SRATio?

Sets the power level difference (ratio) between the source one and the source two signals

when the two signals are summed together. A positive ratio value reduces the amplitude for

source two while a negative ratio value reduces the amplitude for source one.

The range for the summing ratio is dependent on the modulator attenuator setting for the

N8211A/N8212A that is summing the signals together. The minimum range is achieved

when the modulator attenuator setting is zero and the maximum range is reached when the

maximum attenuator value is used. The range can be calculated using the following

formula:

± Range = 50 dB + Mod Atten

The variable <val> is expressed as a number. The variable <units> is expressed in decibels

(dB).

Example

:DM:SRAT 3DB

The example sets the summing ratio for source 1 and source 2 to 3 dB.

*RST +0.00000000E+000

Range Min: ±50 dB Max: ±90 dB

:STATe

Supported N8212A

[:SOURce]:DM:STATe ON|OFF|1|0

[:SOURce]:DM:STATe?

Enables or disables the internal I/Q modulator. T

The I/Q modulator is enabled whenever a digital format is turned on.

Example

:DM:STAT OFF

The example turns off the I/Q modulator.

*RST 0

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Agilent Technologies N8201A Service Manual Page 330