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Associated Environmental Systems offers a radio frequency blocking temperature test chamber that forms a conductive barrier to block radio frequency energy as you test circuit boards and other electronics. The FDR chamber offers the ability to test frequency generating devices within a shielded environment. The chamber also offers the ability to test devices inside that are shielded from the outside.

Our FDR-01 model is a floor-style environmental test chamber with 1.125 cubic feet (31.856 liters) of working volume, and external dimensions of 25.5"W x 32"D x 41"H (1,333.5W x 815D x 1040H mm).


FDR Temperature Configuration:

  • FDR-501 Series   -37°C to +94°C (-34.6°F to +201.2°F)


Interior: 13.5"W x 16"D x 9"H 
  340W x 405D x 230H mm 
Exterior: 25.5"W x 32"D x 41"H 
  1,333.5W x 815D x 1040H mm
Volume: 1.125 cubic ft
  31.856 Liters
Temperature: -34.6°F to 201.2°F
  -37°C to 94°C
Rise Rate*: 3.14°C/minute
Pull Down Rate*: 1°C/minute
Electrical Supply: 120 V, 1 Ph, 60 Hz
Full Load Amps: 15 Amps
Power Requirement: NEMA L5-15NEMA 5-15

*Rise and Pull-down rates calculated using IEC 60068-3-5 standard. Custom options available. 



  AES|XChange-Operating and Data Management Dashboard

Dashboard view enables chamber control at the chamber, at a desktop, or remotely via laptop or tablet

Profile Builder has drag-and-drop, web-browser functionality

Data Logging with onboard, multi-year logging of live and current data, anyplace anytime

Communication and Control uses standard, well-documented JSON API for easy integration with other test platforms

Security decreases test interference with three authentication methods and six permission levels 

View all the benefits of AES|XCHANGE

Watlow F4T Programmable Controller

Features a 4.3” capacitive touchscreen minimizing the chance for error. Ethernet communication supported by AES|XCHANGE

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100 OHM Platinum RTD  is a highly-accurate sensor made from platinum components for increased sensitivity

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Data Loggers

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Safety Measures

We offer multiple types of safeties on our test chambers to help protect your product and your test chamber if anything malfunctions.

Heat Fuse: (Standard)

A heat fuse or thermal fuse, will interrupt the flow of electricity to the test chamber and shut it down if it reaches a certain temperature.

High Temperature Safety: (Standard)

A digital set temperature safety that will shut down the test chamber if it goes over a certain temperature.

High/Low Temperature Safety:

A digital set temperature safety that will shut down the test chamber if it goes over a certain temperature or below a certain temperature.


Optional Features:

  • Shelf Modification (placement, size, number)
  • LN2 Boost Cool
  • CO2 Boost Cool
  • Custom Port Configuration and Attachments
  • Noise Reduction Package



A unique feature of an Associated Environmental Systems test chamber is the variable speed fan we use to control airflow in the chamber. The fan is a variable frequency drive, specifically an ACS310 by ABB, that is dedicated to optimize the variable torque operation of our fans. The speed of the fan can be controlled through a profile or with a control loop on the AES|ONE.



Specifications can vary, and our most popular range is approximately 60 dB from to 700 MHz to 2.6 GHz and no less than 40-50 dB at frequencies up to 5.0 GHz or higher.

Provides blocking and trapping a wide range of radio waves. The factors that create RF blocking conditions are the outcome of thoughtful design work that combines high-grade steel, specialized door gaskets, and various mesh substrates to protect ports and air circulation paths from frequency waves moving in and out of the workspace.

Left: Independent test facility results for vertical shielding effectiveness.


Horizontal shielding effectiveness is approximately 60 dB from to 700 MHz to 2.6 GHz and no less than 40-50 dB at frequencies up to 5.0 GHz or higher.



Customers require the ability to reliably test as much product as possible in as little time as possible. AES standard cascade refrigeration systems have the fastest standard change rates of any environmental test chamber manufacturer, with average pull down times of 2.5°C/ minute and average ramp rates of 4.4°C/ minute. AES chambers allow you to maximize product testing efficiency without sacrificing quality.

Construction Mike-solid works


All test chambers incorporate non-magnetic welded type 304 stainless steel inner chambers, a cold-rolled steel, powder coated exterior, efficient low "K" factor thermal insulation and direct drive-shaft powered forced air circulation along with open wire nichrome resistance elements generating ultimate functionality while maintaining a pleasant laboratory appearance. State-of-the-art regulation techniques result in high accuracy and long term stability.

Heating System

Heating System

AES heating systems are all-electric and pass air over fast-response low watt density resistance heaters with a ceramic core insuring a long reliable life with no down time. The combination of airflow, instrument response and these fast reacting heaters give very accurate and straight-line control of temperatures. Our heating systems support temperatures upwards of 180°C (356°F) and heaters may be controlled independently or in unison. Heating systems are located in a plenum so that test items are not subject to direct radiation.

cascade compressor by associated environmental systems

Cooling System

AES test chambers are either built with a single stage, self-contained mechanical refrigeration system [-37°C (-35°F)], or a two-stage, cascade mechanical refrigeration system [-65°C (-85°F)]. Depending on the size of the cooling system needed, more than one compressor will be included, or a small scroll compressor will be used to save space. Both refrigeration systems also come with an option for water cooling.


Liquid vs Air Cooled Test Chamber

Air cooling will heat up the room that the test chamber is located in, is usually less power efficient, slows the pull down times of the chamber, and needs more space, but costs less and is simpler.

The water cooling option does not heat up the room it is located in, is more power efficient, and has a smaller area compared to the air cooled option, but is more complicated, costs more, and needs a water supply.

xchange splash dashboard by associated environmental systems


Digital chart recorders allow users to escape the limitations of pen and paper data recorders and provide a way to instantly monitor and store valuable testing data.

We offer a variety of controller and data logging options to fit your needs

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