Creating and Downloading User-Data Files

FIR Filter Coefficient Downloads (N5182A, E4438C and E8267D)

The sampling period (Δt) is equal to the inverse of the sampling rate (FS). The sampling rate is equal to the symbol rate multiplied by the oversample ratio. For example, the GSM symbol rate is

270.83ksps. With an oversample ratio of 4, the sampling rate is 1083.32 kHz and Δt (inverse of FS) is 923.088 nsec.

Downloading FIR Filter Coefficient Data

The signal generator stores the FIR files in the FIR (/USER/FIR) directory, which utilizes non- volatile memory (see also “Signal Generator Memory” on page 281). Use the following SCPI command line to download FIR filter coefficients (file) from the PC to the signal generator’s FIR directory:

:MEMory:DATA:FIR <"file_name">,osr,coefficient{,coefficient}

Use the following SCPI command line to query list data from the FIR file:

:MEMory:DATA:FIR? <"file_name">

Sample Command Line

The following SCPI command will download a typical set of FIR filter coefficient values and name the file “FIR1”:

:MEMory:DATA:FIR "FIR1",4,0,0,0,0,0,0.000001,0.000012,0.000132,0.001101, 0.006743,0.030588,0.103676,0.265790,0.523849,0.809508,1,1,0.809508,0.523849, 0.265790,0.103676,0.030588,0.006743,0.001101,0.000132,0.000012,0.000001,0, 0,0,0,0

FIR1

assigns the name FIR1 to the associated OSR (over sample ratio) and coefficient

 

values (the file is then represented with this name in the FIR File catalog)

4

specifies the oversample ratio

0,0,0,0,0,

the FIR filter coefficients

0.000001,...

Selecting a Downloaded User FIR Filter as the Active Filter

NOTE For information on manual key presses for the following remote procedures, refer to the User’s Guide.

FIR Filter Data for TDMA Format

The following remote command selects user FIR filter data as the active filter for a TDMA modulation format.

:RADio:<desired format>:FILTer <"file_name">

This command selects the user FIR filter, specified by the file name, as the active filter for the TDMA modulation format. After selecting the file, activate the TDMA format with the following command:

:RADio:<desired format>:STATe On

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide

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Agilent Technologies N5181A/82A, N5183A MXG, E8663B manual Downloading FIR Filter Coefficient Data, Sample Command Line
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N5183A, N5183A MXG, E8663B, N5181A/82A specifications

Agilent Technologies is renowned for its innovative solutions in electronic test and measurement equipment. Among its offerings are several signal generators including the N5181A, N5182A, E8663B, and N5183A MXG. These models are distinguished not only by their performance but also by their versatility across various applications in communications, aerospace, and electronics.

The Agilent N5181A and N5182A, part of the MXG family, are highly versatile signal generators known for their exceptional frequency performance and flexibility. The N5181A operates from 100 kHz to 6 GHz, while the N5182A extends that range up to 12 GHz. They provide high fidelity signals with low phase noise, making them ideal for the development and testing of RF components and systems. These generators support a wide variety of modulation formats, including AM, FM, PM, and pulse modulation, catering to diverse application needs.

The E8663B, meanwhile, is designed for the range of 250 kHz to 3 GHz and is also recognized for its high-performance features. Its built-in capabilities for modulation make it effective for testing wireless devices, ensuring that signals can be simulated accurately in both laboratory and field environments. It is especially beneficial for users requiring a straightforward and efficient solution with high reliability.

The N5183A MXG signal generator enhances the lineup with frequency coverage up to 6 GHz and advanced capabilities. It integrates various modulation capabilities while ensuring high signal integrity. Its architecture is tailored for both production test environments and research applications, providing users with the flexibility to adapt to changing testing requirements.

Common characteristics across these models include a user-friendly interface that simplifies configuration and operation. They are often equipped with LAN and USB interfaces for easy remote control and integration into automated test systems. The robustness of these generators allows them to perform reliably in challenging environments, making them essential tools in laboratories, manufacturing floors, and field testing scenarios.

In summary, Agilent's signal generators, including the N5181A, N5182A, E8663B, and N5183A MXG, represent a blend of advanced technology, flexibility, and precision. These instruments are vital in facilitating the evolution of cutting-edge communication technologies, ensuring that designers and engineers can confidently meet the demands of modern electronics.
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