STE4400 RF Shielded Test Enclosure

The newest RF test enclosure specifically engineered for the production floor. Designed to the same exacting specifications of the STE3300, the STE4400 offers unique swing-down front door opening for easy device placement and removal. Extra deep work space accommodates the largest devices. Like the STE3300, your custom I/O configuration is brought out to a precision machined I/O panel, giving you off the shelf delivery of your custom order.

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Description

The STE4400 RF Test Enclosure is the newest RF shielding solution engineered specifically for production-floor testing. Built to the same exacting specifications as the STE3300, this enclosure introduces a unique swing-down front door that improves ergonomics and speeds up device loading and unloading. As a result, production teams can test devices more efficiently while maintaining consistent RF isolation.

Designed for high-throughput environments, the STE4400 RF Test Enclosure supports accurate and repeatable RF testing for a wide range of wireless devices. Its rugged construction and user-friendly design make it well suited for manufacturing lines, validation labs, and service operations.


Production-Optimized Design and Ergonomics

Unlike traditional enclosures, the STE4400 RF Test Enclosure features a swing-down front door that allows easy access to the device under test (DUT). This design reduces operator fatigue and minimizes handling time during repetitive test cycles. In addition, the enclosure offers an extra-deep workspace that accommodates larger devices and complex assemblies.

Because production environments demand speed and reliability, the STE4400 focuses on ease of use without sacrificing RF performance. Consequently, teams can maintain throughput while ensuring accurate measurements.


Custom I/O Configuration with Fast Delivery

Like the STE3300, the STE4400 RF Test Enclosure routes your custom I/O configuration to a precision-machined I/O panel. This approach allows you to receive an off-the-shelf enclosure that already matches your specific connector and interface requirements.

Moreover, this design eliminates the need for post-delivery modifications. As testing needs evolve, teams benefit from a clean, professional I/O layout that supports repeatable connections and consistent results.


Built for Reliable RF Testing

The STE4400 RF Test Enclosure delivers stable RF isolation suitable for wireless validation, functional testing, and production screening. By maintaining a controlled RF environment, it helps reduce interference and improve measurement repeatability across test stations.

For applications that require over-the-air (OTA) testing, the enclosure can integrate with fixtures and antenna solutions to support consistent results.


Key Benefits

  • Production-floor-ready RF test enclosure

  • Swing-down front door for fast DUT access

  • Extra-deep workspace for large devices

  • Precision-machined custom I/O panel

  • Designed for high-throughput environments

Additional information

Dimensions 17.5 × 21.25 × 14.25 in
Function

Manual

Internal Depth

15-20in

Internal Height

10-20in

Internal Width

18in and greater

Manufacturer

Ramsey

Specifications

RF Shield Box STE4400 Specifications

  • RF absorbent foam liner
  • Exclusive double lip RF tight gasket
  • Universal I/O connector interface plate
  • Large hinge-down front door
  • Designed to test your own test fixtures
  • Isolation:
    • -90dB @ 2GHz
    • -90dB @ 3GHz
    • -80dB @ 6GHz
  •  Dimension:
    • Outside: 15″H x 22″W x 18.5″D
    • Inside: 14.25″H x 21.25″W x 17.5″D

IO Configurations

Custom Configuration Options

  • RF FEEDTHROUGH: BNC, TNC, SMA, SMB, UHF, Type-N
  • FIBER OPTIC: Fiber optic bulkhead feedthrough, ST, FC
  • DUST COVERS: Dust cover capes with security chains available for all RF feedthrough connectors
  • RF FILTERED DATA: DB9 (10pF), DB9 (100pF), DB9 (1000pF), DB15 (100pF), DB15 (1000pF), DB25 (310pF), DB25 (1000pF), DB37 (310pF), DB37 (1000pF), RJ45/DB9 Filtered, RJ11/DB9 Filtered, USB1/DB9 Filtered
  • POWER CONNECTIONS: 4-Pole filtered barrier strip feed through, 6-Pole filtered barrier strip feed through, internal surge protected power strips (110VAC, 220VAC International)
  • VENTILATION OPTIONS: Dual side mounted RF filtered vents with single filtered exhaust muffin fan, passive vent only
  • RF ABSORBENT FOAM: Standard 1/2″ thick RF absorbent foram liner provides 24dB attenuation. 3/4″ thick foam is standard on the STE3800 and available as an option to provide a flatter response
  • FIBER TRANSCEIVER: Icron Technologies USB 2.0 Fiber Transceiver System available for devices up to 480 MB/s

Note: RF Isolation specs are measured at 1M with terminated RF feedthrough coaxial connectors installed. Actual isolation & attenuation can be affected by adding additional filtered and non-filtered connectors. Check with us for specific connector specifications. STE series I/O interfaces, connectors, and options are frequently updated. Check with us for updates.

I/O InterfaceOrder NumberTypical Data Rate/Line VoltageTypical Shielding*

DB37, 1000pF pi Filter
3409-0012-13 Mbps / 100 VDC,
5 Amps max
>70 dB from 0.5 to 2 GHz
>80 dB from 2 to 3 GHz
>70 dB from 3 to 6 GHz

DB25, 1000pF pi Filter
3409-0009-13 Mbps / 100 VDC,
5 Amps max
>70 dB from 0.5 to 2 GHz
>80 dB from 2 to 3 GHz
>70 dB from 3 to 6 GHz

DB25, 100pF pi Filter
3409-0014-110 Mbps / 100 VDC,
5 Amps max
>50 dB from 0.5 to 2 GHz
>60 dB from 2 to 3 GHz
>60 dB from 3 to 6 GHz

DB9, 1000pF pi Filter
3409-0008-13 Mbps / 100 VDC,
5 Amps max
>70 dB from 0.5 to 2 GHz
>80 dB from 2 to 3 GHz
>70 dB from 3 to 6 GHz

DB9, 100pF pi Filter
3409-0010-110 Mbps / 100 VDC,
5 Amps max
>50 dB from 0.5 to 2 GHz
>60 dB from 2 to 3 GHz
>60 dB from 3 to 6 GHz
STEUSB2071
Max Current: 2A
>80 dB from 741MHz to 6 GHz
STEETHD10G10 Gbps>80dB 100MHz to 40GHz
STEUSB3CCMax Current 3.75A>90 DB 200MHz to 8 GHz
STEUSB312Max Current: 2A>90 DB 200MHz to 8 GHz
STEGBE45911 GBps>90 DB 700MHz to 8 GHz
IEC25010C250 VAC 10A>80 dB at 200 MHz to 30 GHz
STEDC2010100 VDC 10A, 48VAC, 10 A>90 dB 1GHz to 3 GHz