BR121-095 4-CH Programmable ATT
BR121-095 4-CH Programmable ATT
BR121-095 RF Attenuator
Multi-channel Programmable Attenuator(4 CHANNELS)，DC-8000MHz，0-95.25dB(0.25dB Step)
Product Appearance
PIN:60.06.041.0074
Product Overview
The BR121-095 is a portable, programmable attenuator with a wide frequency range of DC to 8000 MHz, four channels, and 0.25 dB step sizes. It supports remote control via serial (RS-232) and Ethernet (UDP) interfaces, as well as local operation via a touchscreen. Featuring 50 Ω impedance and SMA-F connectors, it meets the high-precision power control requirements of both laboratory and production line environments.
Technical Parameter
| Frequency Range (GHz) | DC-8 |
| Insertion Loss (dB) | ≤6@DC-2.5GHz; ≤11@2.5-6GHz; ≤13@6-8GHz |
| VSWR | ≤2.2 |
| Maximum RF Input Power (W) | 1W (average) |
| Impedance (Ω) | 50 |
| Connector Type | SMA Female |
| Control Method | Touchscreen, serial port (RS232), Ethernet port (UDP) |
| Attenuation Accuracy (dB) | ±0.5@0-40dB; ±1.0@40-80dB; ±1.5@80-95.25dB; |
| Attenuation Range (dB) | 0–95.25 |
| Step(dB) | 0.25 |
| Number of Channels | 4 |
| Dimensions (mm) | 350 × 250 × 235 |
| Weight (kg) | Approx. 2.5 |
| Power Supply (V) | 110–250 V AC |
| Operating Temperature (°C) | –20 to +70 |
| Notes | The device's USB port is intended for firmware updates only. Keep the power connected while using it for this purpose; do not use it for any other purpose. |
Big Deal
Ultra-wideband: DC–8000 MHz, compatible with mainstream wireless and microwave bands
Precise Control: 0.25 dB steps, attenuation range 0–95.25 dB, high adjustment accuracy
Multi-Channel Parallel Operation: 4 independently controlled channels for improved test efficiency
Dual Operating Modes: Remote control (RS232 / Ethernet) + local touchscreen operation
Stability: Low VSWR (≤2.2) and high attenuation accuracy, meeting the requirements of standard RF testing
Wide-Voltage Power Supply: 110–250 VAC, suitable for worldwide use; operating temperature: -20 to +70 °C
Applications
RF modules / Terminal power calibration and dynamic range testing
Wireless communication (2G/3G/4G/5G Sub-6G) receiver sensitivity testing
Precise power attenuation and link simulation for laboratory signal sources
Power control units for automated test equipment (ATE) on production lines
Performance verification and aging tests for RF components (amplifiers, filters, antennas)
Control Method
Touchscreen, serial port (RS232), Ethernet port (UDP)
Test Report
0dB
*The information in this document is intended to assist users in product selection. Users are advised to conduct tests to determine whether the product meets the requirements of the corresponding application scenarios. Product specifications and descriptions herein are subject to change without prior notice.