Sale

8G 6G 3G Digital Programmable Attenuator 90DB Step 0.25DB TFT Display CNC High Isolation Type C Port with SMA Female Connector

QWinOut

Sale price $83.25 Regular price ~~$124.88~~

Shipping calculated at checkout.

3G 6G 8G Digital Programmable Attenuator 90DB Step 0.25DB TFT Display CNC High Isolation Type C Port with SMA Female Connector

1. Product Introduction

This is a DC - 6GHz/8GHz programmable attenuator module, which is mainly used in the fields where amplitude output control is required in radio - frequency and intermediate - frequency links. It has the advantages of wide frequency range, support for multiple communication methods, low power consumption, high attenuation accuracy, small attenuation step, fully shielded multi - cavity design, flat curve, and good isolation.

2. Module Parameters

Frequency Range: DC - 6GHz (basic version), DC - 8GHz (upgraded version with higher isolation and improved performance).
Attenuation Range: 0 - 95.25dB (the maximum attenuation is 90dB in practical application).
Minimum Attenuation Step: 0.25dB.
Input/Output Impedance: 50Ω.
Output Interface: SMA female connector (outer spiral and inner hole).
Power Supply: Supports TYPE - C port for power supply (30W), and also supports TTL serial port communication.
Communication Protocol: Supports both USB (STM32F4 virtual serial port, no need to set the baud rate) and FL serial port communication (baud rate is 9600).
Dimensions: 6.8×4.8×2.5CM (excluding the protruding SMA), weight: 120g.

3. Module Physical Diagram

The whole module is made of all - aluminum alloy and adopts a multi - cavity design. The core attenuation chip and the MCU main control are shielded separately.
There is a 1.3 - inch full - color TFT and buttons for control. The RF port supports two - way communication and does not distinguish between input and output.

4. Upper - Computer Communication Software

The provided upper - computer communication software is named "PC Attenuation Controller". The main interface has functions such as sending and receiving data, refreshing, disconnecting, and setting the attenuation value. It can select different stepping values (0.1DB, 0.25DB, 0.5DB, 1DB) and quickly set attenuation data.

5. Module Measurement

DC - 6GHz Module Measurement: Measured by a vector network analyzer, the attenuation performance at different attenuation values (0, 10, 30, 40, 50, 60DB, etc.) is shown through graphs. When the attenuation is greater than 60DB, it exceeds the isolation range of the measurement network analyzer.
DC - 8GHz Module Measurement (2023 Upgraded Version): Measured by a vector network analyzer, the input loss and attenuation performance at different attenuation values (0, 10, 20, 30, 40, 50, 70, 90DB, etc.) are measured and recorded in detail.

6. Module Communication Protocol

Sending Attenuation Coefficient Command: Used to change the attenuation coefficient. The command format is "att - xxx.xx", and the end symbol is carriage return ("/n/r").
Response Value Signal: The format is "attOK".
FL Serial Port Communication: When using FL serial port communication, the baud rate is 9600.
Reading Data Format: The reading data format is "READ()", and then followed by carriage return.
USB Communication: USB communication is realized through the STM32F4 virtual serial port, and there is no need to set the baud rate.