JRE LAN-USB 2 Dual Filtered Interface: RJ-45 Ethernet and USB 2

Test both Ethernet and USB 2.0 devices in a sealed RF environment — two independent filters in a single housing, now covering the latest LTE cellular bands. Each section passes your data clean while rejecting cellular, LTE, and WiFi interference above 700 MHz.

• Two fully independent, fully passive filter sections in one housing — a 10/100/1000 Ethernet filter and a USB 2.0 filter — saving I/O plate space and cost versus two separate filters
• Precision low-pass design — passes all data below 480 MHz clean while rejecting cellular, LTE, and WiFi: anything above 700 MHz is knocked down hard
• Over 80 dB attenuation above 1 GHz, flat response below 480 MHz
• Now covers the latest LTE cellular bands
• LAN section filters all eight RJ-45 lines (10/100 uses four, gigabit uses all eight) — so you can wire any signal onto any line and use it as a general-purpose filtered interface, not just Ethernet
• High-performance inductors: up to 250 mA per line, under 1.5 Ω DC resistance per path — Ethernet PoE pass-through compatible
• USB section fully USB 2.0 compliant with proper USB enumeration
• Balanced filtering for minimal ringing
• Fully passive by design — no active components, no firmware, nothing that could be subverted in a data-side attack
• 100% made in USA
• One USB 2.0 Type-A jumper and one RJ-45 Ethernet jumper cable included — one per section
• Secured with multiple 4-40 screws (mounting template included) for a reliable, repeatable RF seat — not a single-nut mount that can loosen and leak
• Rugged machined-aluminum housing
• Works with any RF test enclosure or screen room

The JRE LAN-USB 2 is two separate, fully independent filtered interfaces — one 10/100/1000 Ethernet, one USB 2.0 — built into a single rugged machined-aluminum housing. Combining them on one footprint saves space on the I/O plate and costs less than two stand-alone filters.

Both sections are precision low-pass filters — and for these interfaces, that's exactly the right tool. USB 2.0 tops out at 480 Mbps, and 10/100/1000 Ethernet data likewise sits well below the wireless bands, so there's a clean gap between your data (below 480 MHz) and the interference you're keeping out (cellular, LTE, and WiFi, all above 700 MHz). A low-pass filter passes everything below the gap untouched and rejects everything above it by better than 70–80 dB. Our patented signal-phasing filters exist for the faster interfaces — USB 3 SuperSpeed, 10GBASE-T — where the data climbs up into the interference band and a simple low-pass can no longer separate the two. At USB 2.0 and gigabit speeds you don't need that, and the filter's added cable length is immaterial.

Ethernet / LAN section. A 10/100/1000 low-pass filter on all eight RJ-45 lines, providing exceptional RF shielding on every line. It rejects everything above the 700 MHz cellular bands while passing data clean between routers, switches, access points, or any RJ-45 device. Because all eight lines are filtered (10/100 Ethernet uses four of the eight, gigabit uses all eight), you can wire any signal onto any line and pass it across the filter — anything below 480 MHz passes, anything above 700 MHz is attenuated by more than 70 dB — which makes it handy as a general-purpose filtered interface, not just for Ethernet. High-performance inductors allow up to 250 mA per line with under 1.5 Ω DC resistance on any path. Fully Ethernet PoE compatible. One RJ-45 Ethernet jumper cable included.

USB section. A USB 2.0-compliant low-pass filter with proper device enumeration, so any test hiccups are exchanged end-to-end between host and device — none of the silent hang-ups a fiber or media-converter link can hide. It passes data and power between the host on one side and the USB device on the other, using a balanced bidirectional data pair plus an unbalanced power-and-return pair, on standard USB Type-A connectors. The data lines pass USB 1.1/2.0 up to 480 Mbps while rejecting RF by more than 80 dB from 1 GHz through 6 GHz; the power lines pass DC while rejecting more than 80 dB from 400 MHz through 6 GHz. One USB 2.0 Type-A male-to-male jumper cable included.

Need the sections separately? See the single JRE LAN-1 and JRE USB 2-1 filters. Need SuperSpeed USB or 10G Ethernet, where the data overlaps the wireless bands? The patented JRE LAN10G-USB 3 combo is built for exactly that. For more on how filtered interfaces handle data signals, see Understanding Data Signals.

Download datasheet: LAN-USB 2

Download hole pattern and drawing: LAN-USB LAYOUT
Mounting screws are 4-40 and included with filter. Clearance hole size is 0.1285" diameter - #30 or 3.3mm drill

• Reduces interference from Cellular and WiFi
• Two filters in one housing saves money and space
• Ethernet PoE power passing compatible
• Heavy duty machined aluminum case for reliable shielding and ruggedness
• Precision designed filtering for minimal ringing on data lines
• Excellent RF filtering at all wireless frequencies

Data Line Balanced Impedance: 100 Ohms typical

Typical Insertion Loss:

• 10 MHz  0.1 dB
• 150 MHz  1.2 dB
• 250 MHz  1.5 dB
• 350 MHz  2.0 dB
• 480 MHz  3.0 dB
• 700 MHz  > 70 dB
• 800 MHz to 6 GHz > 80 dB

Outside: 3.2" H x 3.2" W x 0.8" D (80 x 80 x 20 mm)

LAN Filter: RJ-45 Female jacks

USB Filter: USB 2.0 Type A Female connectors

Filtering: All lines filtered

Power capability: Up to 60 VDC at 250 mA, 1.5 ohms max DC resistance

JRE Test’s RF Shielded Test Enclosures deliver real value and save time over in-house fabricated test solutions. Our fast off-the-shelf delivery, unbeatable price and performance make us the first choice for all your RF test needs. The industry's widest line of enclosures provides superior RF isolation from 10 MHz to over 6 GHz, covering the entire range of popular commercial, private and government communications systems. Whether you are designing, integrating, or conformance testing the next generation Wi-Fi, WLAN, 3G Cellular device, you can rely on JRE Test to provide a seamless solution that is compatible with today’s technology and is ready for the future.