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Home ⊙ NEWS ⊙ Advantest R3681 Signal Analyzer New Signal Analyzer for the Ubiquitous Networking Era
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Advantest R3681 Signal Analyzer New Signal Analyzer for the Ubiquitous Networking Era

From:ADVANTEST | author:Mr.Chen | Time :2025-01-13 | 119 view: | Share:

High-performance spectrum analysis

By taking full advantage of the latest RF technology, the R3681 can make measurements over a wide dynamic range.

Measurements are performed over a wide dynamic range:

●Average display noise level: -158 dBm (typical 1 GHz)

●Built-in preamplifier on: -168 dBm (RBW = 1 Hz, 1 GHz)

●1 dB compression point: +10 dBm (typical 200 MHz to 3.5 GHz)

●Third-order intercept (TOI): +26 dBm (typical 2 to 3.5 GHz)

●Signal purity (at 800 MHz)

10 kHz Offset: -120 dBc/Hz or more

1 MHz Offset: -140 dBc/Hz or more

10 MHz Offset: -155 dBc/Hz or higher

Built-in attenuator, 5 dB level (standard)

1 dB level attenuator (OPT.14)

●Resolution bandwidth (RBW): 1 Hz to 10 MHz (Sequences 1. 2. 3. and 5)

Display dynamic range: 10 dB/fixed

0.1 to 1 dB/div. (0.1 dB steps)

1 to 20 dB/div. (1 dB steps)

Steepness shape factor

Approximately 3 times the conventional value. This reduces the resolution of carrier near-field measurements.

Extensive Analysis Functions

Equipped with a wealth of standard analysis functions

The R3681 comes standard with the fine measurement functions of ADVANTEST's conventional spectrum analysers.

The fine measurement functions of a conventional spectrum analyser:

Marker function (multi-marker, triangle marker, peak search, etc.)

Various detection functions required for communication standard measurements Normal value, positive peak, negative peak, sample, RMS value, video average and average voltage.

Other one-touch measurement functions commonly used in RF measurements

Power Measurement Mode

Power measurement (channel power/average power/total power), wideband CCDF measurement, Occupied Bandwidth (OBW) measurement, Adjacent Channel Leakage Power (ACP) measurement, multicarrier measurement, etc.

General Measurement Modes

Spectrum emission mask, spurious measurement, noise/frequency conversion, IM measurement, frequency counter (0.01 Hz resolution), etc.

WLAN modulation analysis

Broadband measurement using OFDM modulation analysis function (OPT.68)

With the addition of Option 68 (Wideband OFDM Modulation Analysis Function), the R3681 can analyse and measure IEEE802.11a, HiperLAN/2 and HiSWANa modulated signals.

The R3681 can analyse RF inputs, I/Q baseband inputs and wideband WLAN signals.

Key Features

●Automatically detects BPSK, QPSK, 16QAM, or 64QAM.

WLAN signal analysis with different modulations for each subcarrier

●W-LAN signal analysis without leading codes

●Signal analysis by specified number of valid symbols

●I/Q baseband analysis

●Detailed modulated signal analysis using different graphical displays

Comparative analysis of different display formats using four simultaneous displays

●Enhanced operability with a large 12-inch screen and touch panel

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