This manual provides an overview of the FSQ signal analyzer family, covering the FSQ‑3, FSQ‑8, FSQ‑26 and FSQ‑40 models. It describes the instrument’s high‑dynamic‑range performance, up to 120 MHz I/Q demodulation bandwidth, and its suitability for a wide range of wireless communication standards.
The document also explains the instrument’s interfaces (GPIB, LAN, RS‑232, VGA), optional measurement modules, calibration procedures, and network‑enabled remote control features. Ordering information and accessory part numbers are listed at the end. This manual is written in Chinese.
| Frequency range (FSQ‑3) | 20 Hz ~ 3.6 GHz |
|---|---|
| I/Q demodulation bandwidth | up to 120 MHz (expandable) |
| Typical TOI (output power) | +25 dBm |
| 1 dB compression point | +13 dBm |
| Noise floor (DANL) at 1 GHz | -158 dBm (1 Hz RBW) |
The FSQ can demodulate I/Q signals with a bandwidth of up to 120 MHz, and this can be expanded to the full 120 MHz with the appropriate option.
The instrument supports GPIB/IEC commands, LAN (10/100 Base‑T), RS‑232‑C serial, and VGA output for screen capture.
The typical displayed average noise level at 1 GHz is –158 dBm for a 1 Hz resolution bandwidth.