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.