The positive test results support our product performance claims and serve as added peace of mind for our customers who demand laboratory certified/guaranteed high-shielding products for use in the digital forensics field, military, government, aerospace, security, health, privacy, or construction industries.

MOS Equipment aims to offer extremely high-quality, effective, security solutions for a variety of digital threats and scenarios. The high-level testing conducted was not mandatory or typically sought after for a company specializing in radio frequency (RF) shielding enclosures for law enforcement and forensic investigators. In fact, we are one of the only faraday product manufacturers that have undergone multiple types of shielding effectiveness tests (or perhaps the only one). We continue to acquire various shielding certifications in order to support our claims and to help our customers understand our general shielding capabilities, including the newly achieved results from IEEE 299-2006 testing at a frequency range of 1.5GHz to 40GHz, as well as MIL-STD-188-125 (click the link to view separate shielding effectiveness test results).

Keystone Compliance's shielding effectiveness testing determines the ability of material and enclosures to block electromagnetic and radio frequency (RF) signals. The testing conducted was designed to accomplish the following three goals:

1. The first goal is to keep certain RF signals within the enclosure of the device. As part of the product certification process, electronic devices must undergo Electromagnetic interference (EMI) testing. EMI testing determines if there are signals generated by the device under test that are outside of the acceptable range and limit. These RF signals could significantly impact other electronic devices in its proximity. These impacts can include communication interruptions, data loss and system malfunctions.
2. The second goal of shielding effectiveness testing is to block external EMI from impacting the device under test. All of the potential impacts mentioned in the previous paragraph can be realized by the device under test if its enclosure is not properly shielded. Areas of vulnerability can include cables, input and outputs, fans, points of ingress, gaskets, seals and controls.
3. The third objective is a combination of the two. A properly-shielded device will effectively retain all RF energy in its enclosure and keep all external RF isolated. The amount of RF allowed in or out will depend on the purpose of the device, its functionality and its placement of operation.

IEEE 299 is the standard method for measuring the effectiveness of electromagnetic shielding enclosures. The shielding effectiveness testing occurs at varying frequencies. Testing to IEEE 299 requires placing transmitting and receiving loops approximately 0.3m from the respective shielding barrier. The generator output is maintained at the level used during the reference measurement and is applied at each frequency and location. During all low-frequency measurements, one loop remains in a fixed position and the second loop is repositioned and displaced to seek a worst-case measurement. The maximum indication of the detector reading is used for determining the shielding effectiveness.

Our specific test setup was for IEEE 299-2006. The frequency range tested and complete test results are noted in the downloadable reports generated by Keystone Compliance (see below).

All products were tested at the frequency range of 1.5GHz to 40GHz, like pictured above. Testing materials for shielding effectiveness involves two connected EMC test chambers with a shared wall. The shared wall has a window in which the sample is securely placed. The shielding effectiveness test lab places a transmitting antenna in one chamber and a receiving antenna in the other chamber. The transmitting antenna transmits a predetermined set of signals. The receiving antenna will record all of the signals received. Essentially, all signals that are transmitted but not received are considered shielded by the material.

BlockBox Lab Shielding Effectiveness

Shielded Honeycomb Air Vent Shielding Effectiveness

TitanRF™ Faraday Tape Shielding Effectiveness