Measurement Average

Sets the average count for the measurement data when in the summary mode (use :AFP:DEM:MODE SUMM to set summary mode). The query format of this command returns the value only in the summary mode. The query format returns nothing in other measurement modes.

<number>

1 to 65535

Shift-4 (Measure), Average (access only in Summary mode)

Summary data

This query returns the measurement values when in the summary mode (use :AFP:DEM:MODE SUMM to set summary mode). The order of the values are as follows:

<Modulation rate> in Hz, <RMS Deviation> in % or Hz or Rad depending on the demod type, <Peak-Peak/2 Dev> in % or Hz or Rad depending on the demod type, <SINAD> in dB, <THD> in % and <Distortion> in %. All values are comma separated.

Shift-4 (Measure), Audio Spectrum/Waveform

Demodulation Mode

This command sets the demodulation mode (graph type) to RF Spectrum (RFSP), Audio Spectrum (AFSP), Audio Waveform (AFWV), or Summary (SUMM).

RFSP|AFSP|AFWV|SUMMary

RFSP

To set the demodulation mode to Audio Waveform:

Shift-4 (Measure)

Demodulation Type

This command sets the demodulation type.

AM|FM|PM

AM

To set the demodulation type to FM:

Setup, Demod Type

FM Y-axis reference level percentage

This command sets the Y-axis reference level as the percentage of the IF bandwidth while in the FM Audio spectrum/waveform display.

<percentage>

50

%

0% to 100%

Shift-4 (Measure), Audio Spectrum/Waveform, Scale: % IFBW

IF bandwidth

Sets the IF bandwidth. Note that using this command turns the automatic IF bandwidth setting OFF.

<freq>

300 kHz

Hz

1 kHz to 300 kHz in a 1:3 sequence

Setup, IFBW

IF bandwidth coupling

Sets the state of the coupling of the IF bandwidth to the span. Setting the value to 1 will result in the IF bandwidth being coupled to the span. That is, when the span changes, the IF bandwidth changes. Setting the value to 0 will result in the IF bandwidth being un-coupled from the span. That is, changing the span will not change the IF bandwidth.

0|1

<boolean>

1

Setup, Auto IFBW

PM Y-axis reference level

This command sets the Y-axis reference level while in the PM Audio spectrum/waveform display.

<number>

3.140

3.140 to 3140

Shift-4 (Measure), Audio Spectrum/Waveform, Scale: milli-Rad

Summary data

This query returns the measurement values while in the RF spectrum mode (use :AFP:DEM:MODE SUMM to set summary mode). The order of the values are as follows:

<carrier power> in dBm, <carrier freq> in Hz, <Occ BW> in Hz. All values are comma separated.

Shift-4 (Measure), RF Spectrum.

Audio Frequency Span

Sets the audio frequency span while in the Audio Spectrum mode (use :AFP:DEM:MODE AFSP to set audio spectrum mode). Valid values are 2 kHz, 5 kHz, 10 kHz, 20 kHz and 70 kHz.

<freq>

Hz

Shift-4 (Measure), Audio Spectrum, Span

Audio Waveform sweep time

Sets the audio waveform sweep time while in the Audio Spectrum mode (use :AFP:DEM:MODE AFSP to set audio spectrum mode).

<time>

Secs

50 µs to 50 ms.

Shift-4 (Measure), Audio Waveform, Sweep Time

Summary data

This query returns the measurement values in the Summary view (use :AFP:DEM:MODE SUMM to set summary mode). The order of the values are as follows:

<demod type> (AM|FM|PM), <RMS Deviation> in % or Hz or Rad depending on the demod type, <Peak+ Deviation> in % or Hz or Rad depending on the demod type, <Peak-Dev> in % or Hz or Rad depending on the demod type,
<Peak-Peak/2 Dev> in % or Hz or Rad depending on the demod type,
<carrier power> in dBm, <carrier freq> in Hz, <Occ BW> in Hz, <Modulation rate> in Hz, <SINAD> in dB, <THD> in % and <Distortion> in %. All values are comma separated.

Shift-4 (Measure), Summary.

Center Frequency

Sets the center frequency. Note that changing the value of the center frequency may also change the value of the span.

<freq>

Hz

Freq, Center Freq

Channel Selection

Sets the channel number for the selected signal standard.

<number>

Freq, Channel

Signal Standard

Selects the desired signal standard from the list. The <string> argument is the name of the desired signal standard as displayed in the instrument’s current signal standard list. The list can be displayed on the instrument by choosing the Signal Standard submenu button in the Freq menu. The list can also be downloaded remotely and viewed using Anritsu Master Software Tools. For example, if the desired Signal Standard is:

P-GSM 900 - Uplink then the value of the <string> would be “P-GSM 900 - Uplink”.

The query form of this command will return the name of the currently selected Signal Standard on the list.

<string>

Freq, Signal Standard

Frequency Span

Sets the frequency span. Minimum value and the maximum value are 10 kHz and 10 MHz respectively. Note that changing the value of the frequency span may change the Center Frequency.

<freq>

Hz

Freq, Span

Frequency Span – Full

Sets the frequency span to maximum span (10 MHz). Note that changing the value of the frequency span may change the Center Frequency.

Freq, Span, Max Span

Frequency Span – Minimum

Sets the frequency span to minimum span (10 kHz). Note that changing the value of the frequency span may change the Center Frequency.

Freq, Span, Min Span

Frequency Span – Last

Sets the frequency span to the previous span value. Note that changing the value of the frequency span may change the Center Frequency.

Hz

Freq, Span, Last Span

Frequency Step

Sets the frequency step to the given frequency value.

<freq>

1 MHz

Hz

1 Hz to 20 GHz

Freq, Freq Step

Occupied Bandwidth Measurement Method

Sets the method for calculating occupied bandwidth. XDB calculates the occupied bandwidth based on points a specified number of dB below the carrier. Issue command [:SENSe]:OBWidth:XDB to set the number of dB to be used. PERCent calculates the occupied bandwidth based on points a specified percentage of the carrier power below the carrier. Issue command [:SENSe]:OBWidth:PERCent to set the percentage to be used.

XDB|PERCent

<char>

PERCent

Shift-4 (Measure), RF Spectrum, Occ BW Method

Occupied Bandwidth Percent of Power

This command sets the percentage of carrier power used to measure the occupied bandwidth. This value is used in the measurement if :SENSe:OBWidth:METHod is set to PERCent.

<percentage>

99

%

0% to 100%

Shift-4 (Measure), RF Spectrum, %

Occupied Bandwidth dB Down

This command sets the number of dB below the carrier used to measure the occupied bandwidth. This value is used in the measurement if :SENSe:OBWidth:METHod is set to XDB.

<rel ampl>

3 dBc

dBc

0 to 100 dBc

Shift-4 (Measure), RF Spectrum, dBc