Advantest R3131A Spectrum Analyzer 9 kHz to 3 GHz

Features

• Built-in High Accuracy OBW, ACP and Power Measurement Functions Which Can Be Applied to Digital Radio Measurement
• Improved Ease of Use Through Auto TUNE Function
• Total Level Accuracy Guaranteed by Auto CAL Function
• Standard Interfaces: GPIB, RS232, Centronics and FD Drive
• Large Character Display Allows Results to Be Seen
• EMC Measurement Functions
• Improved System Operation Speed
• Operation Key Arrangement for Ease of Use
• Compact and Light Weight (12 kg) with a Space-saving Design
• Optional Tracking Generator for Scalar Transmission Measurements

Applications

• Digital Radio Transmitter Characteristics Measurement
• EMC Diagnostic Testing
• Education/Training

An Affordable Personal Spectrum Analyzer with Performance to Match Many Applications

The R3131A is an easy-to-use personal spectrum analyzer which combines high accuracy necessary for digital radio measurement with excellent operability and usability. The R3131A can be used in diverse fields, for a multitude of applications.

Lots of Standard Features

The R3131A includes a number of standard features that normally are available only as options. These include an IEEE 488 interface, RS-232 interface and parallel printer (Centronics) port. A 3.5 in. floppy disk is also provided at no extra charge, as is an EMC measurement function.

Measurement parameters and results can be recorded on a 3.5 in. floppy disk. Because the bitmap and text formats are compatible, the recorded data can easily be transferred to a PC.

Independent Operation Keys Improve Operability

Searches for the signal with the maximum level within the 3 GHz band and sets the center frequency automatically. Then, reproduces the setting which existed immediately before execution of AUTO TUNE, allowing observation under the same measurement conditions.

COUNTER

Performs frequency measurement with the built-in frequency counter simply by moving the marker to the signal. You can select frequency readout resolution from 1 Hz up to 1 kHz. The measurement results are displayed with enlarged characters for easy viewing.

POWER MEASURE

The R3131A can measure the power within the specified band of frequency diffuse signals and the total power of multi-carrier signals. It can also be used to measure the occupied frequency bandwidth (OBW) and adjacent channel leakage power (ACP) which are essential to transmission characteristics testing for radio equipment.

CHANNEL POWER

The R3131A allows you to measure the total power within the window and display it as the channel power simply by setting the measurement window to the specified occupied bandwidth.

TOTAL POWER

Obtains the total power from the spectrum displayed on the screen. This function is useful for total power measurement of multi-carrier signals.

OBW

Measures the frequency band which contains 99% of the total power of the spectrum displayed on the screen. In addition, the % value of OBW can be set to any desired value.

ACP

The measurement results can be displayed in graphical form, including the upper and lower point data offset from the carrier and the leakage power values at all the displayed frequency points.

GATED SWEEP

Bursted signals are difficult to capture with some spectrum analyzers. The R3131A allows spectrum analysis of the burst signal by supplying a trigger signal synchronizing with the burst transmission.

The R3131A allows you to store and recall measured waveform data and measurement conditions. The R3131A unit offers up to 10 dedicated files for storage.

PASS/FAIL

Sets the limited judgment value for the level axis using a window. If the marker falls within the window, the PASS judgment results; otherwise, the FAIL judgment results. Since the limit value is set as an absolute value, you can make a measurement with the same judgment value with different REF levels. In addition, by setting the limit window for the frequency axis, the portion where the X and Y axes overlap is judged as the PASS region.

Diverse Measurement Functions

The MEAS key incorporates the XdB Down measurement function which is useful for noise measurement, AM modulation measurement, 2-signal 3rd-order distortion measurement and filter cut-off frequency measurement. In noise measurement, bandwidth conversion can easily be made and the PBW calibration function for improvement of measurement accuracy is effective. The PBW calibration function is a new calibration function which performs correction in power measurement based on conversion of the R3131A resolution bandwidth filter to an ideal filter, thereby allowing measurement with higher accuracy.

EMC

This function measures electromagnetic interference generated by various electronic equipment. This function incorporates the 9 kHz and 120 kHz RBW and QP detector conforming to the CISPR Pub.16-1 standard. In addition, using the AM/FM demodulation signal fed from the PHONE jack on the rear panel, you can identify broadcasting radio waves which act as external noise. Prior to measurement of noise emission on the approved site, this function is very useful for preparatory evaluation and solution.

Antenna and Level Correction Functions (Correction Table Editing via PC Interface)

Various antenna correction factors provided by Advantest are built-in the R3131A. Simply by selecting the model name of the antenna, the level indication of the R3131A is calibrated to an absolute value, allowing you to read the value directly in units of dBµ/m. When you use an antenna from other manufacturers, you can reflect its antenna correction factor in the level indication of the R3131A by performing steps 1 and 2 below.

1. Set Antenna Correction to ON and SAVE the file.

2. OPEN the file from the floppy disk using Excel on the PC.

3. Enter the frequency and correction level in the [ANT CORR] area and then overwrite it on the floppy disk.

4. Load the floppy disk in the R3131A and then RECALL the file. The Correction table is created.

Set Correction to ON. The corrected data is reflected on the screen data.

The throughput of production and adjustment lines is largely affected by the measurement time of measuring instruments and data transmission time. With newly developed internal processing technology, the R3131A has shortened the time necessary for GPIB control and data transmission by half or more in comparison with former products. In addition, by reducing the settling time of the local oscillator, the waveform update rate in unit time has been doubled.

(In either case, comparison is made under the same conditions.)

Applicable Printers

CANON -

BJC-35V

BJC-410J

BJC-420J

BJC-600J

(Other ESC/P applicable model)

HP -

Desk Jet 505J

Laser Jet 5L

Laser Jet 4PJ

(Other PCL applicable model)

EPSON -

MJ-500

MJ-930C

MJ-5000C

MJ-700V2C

PM-700C

PM-750C

PM-2000C

(Other ESC/P, ESC/P raster applicable model)

Note: Functions may be restricted depending on the printer type.