Charging Devices Without Breaking Isolation
Unfiltered cables can leak signal in and out. Here is how charge-while-isolated workflows actually work.
Quick Answer
A USB or mains cable passing through an unfiltered hole in a shielded enclosure becomes an antenna. The bag or cabinet's attenuation can drop dramatically.
Why Cables Are a Risk
A USB or mains cable passing through an unfiltered hole in a shielded enclosure becomes an antenna. The bag or cabinet's attenuation can drop dramatically.
Filtered Feedthroughs
Quality units use bulkhead-mounted EMI/RFI filters on every conductor passing the boundary. The filter is part of the validated shielding system, not an accessory.
Power Management
Smart power feeds let custody staff pause charging during examination, log power events and avoid keeping devices on full charge for months.
Verifying Isolation in Use
Routine spot-checks with an RF survey meter or signal generator confirm the cabinet still meets specification with cables in use.
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