JRE USB 3-2 Dual USB 3.0 ‘SuperSpeed’ Filtered Interface

Test two USB 3.0 "SuperSpeed" devices in a sealed RF environment without throttling your data — both channels in a single housing. The USB 3-2's patented design is not a low-pass filter — it rejects wireless RF interference without touching the high-speed data the way conventional filters do.

• Two fully independent, fully passive USB 3.0 SuperSpeed channels in one housing — saves I/O plate space versus two single filters
• Patented signal-phasing topology (two US patents), NOT a low-pass filter — discriminates data from RF interference rather than attenuating both
• Handles USB 1.1, 2.0 and 3.x "SuperSpeed" over standard Type-A connectors
• No inherent data-speed limit in the filter itself — achievable rate is set by total cable attenuation, not by the filter
• Proper enumeration over a direct "copper" path — test hiccups are exchanged end-to-end, with none of the silent hang-ups a fiber or media-converter link can hide
• Fully passive by design — no active components, no firmware, nothing that could be subverted in a data-side attack
• 100% made in USA
• 80 dB conducted attenuation, 50 MHz to over 6 GHz, on each channel
• Each channel appears to the link as roughly 1–1.5 m of USB cable — budget for it in your overall cable length
• Two USB 3.0 Type-A male-to-male jumper cables included — one per channel
• 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 USB 3-2 is two fully independent USB 3.0 SuperSpeed filtered channels built into a single machined-aluminum housing that gives exceptional RF shielding on every data and power line. Each channel is its own full USB 3 filter — so a second device costs you only one mounting footprint on the I/O plate instead of two. Both use standard Type-A connectors and are backward compatible with USB 2.0 and 1.1.

It works on an entirely different principle from older USB filters. Earlier designs low-pass filtered the data lines to knock down interfering wireless RF — but as USB rates climbed into the SuperSpeed range, the data itself moved up into the same frequency band as the interference, and a low-pass filter can no longer tell them apart: it attenuates both. Our patented design — for which we hold two US patents — instead exploits the fact that the USB data travels as a balanced differential signal while the interfering RF appears as common mode. Using signal-phasing techniques and topology, it discriminates between the two — rejecting the RF while passing the data clean — with no low-pass filtering anywhere on the data conductors, plus filtered power and return lines. This is especially valuable where a low-pass filter fails: when the signaling rate falls inside the wireless bands, or when the interfering source itself sits inside a low-pass filter's pass band (key fobs, RFID).

Speed and cables — what actually governs your data rate. Neither channel has a speed limit of its own; each "looks like" roughly 1 to 1.5 meters of USB cable, and it's the total attenuation of the filter plus your connecting cables that sets the achievable rate. With the included jumpers you'll reliably pass 5 Gbps and often up to 10 Gbps per channel, depending on how robust your devices and cabling are. For the fastest rates over longer runs, use an active cable on the external side. For the full cable-length and active-cable discussion, see USB-3 and USB-C Special Considerations.

Only need one USB port? The JRE USB 3-1 is the single-channel version. Need USB Type-C instead of Type-A? See the JRE USB C-1.

Download datasheet: USB3-2

Download hole pattern and drawing: USB3-2 Layout
Mounting screws are 4-40 and included with filter. Clearance hole size is 0.1285" diameter - #30 or 3.3mm drill

• Patented unique design discerns between data and RF signals
• Extremely wideband operation, from low VHF through microwave
• Low loss, appears to the devices as a one meter long cable
• Heavy duty machined aluminum case for reliable shielding and ruggedness
• Multiple points of attachment secures without rotation or loosening

• Insertion Loss on Data lines: less than 1.5 dB
• 80 dB isolation in test system configuration
• Data Line Balanced Impedance: 90 Ohms typical
• DC Power line: 0.1 ohms DC resistance, -20 db @ 1 MHz, -80 db @ 10 MHz to 6 GHz

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

USB Inside: USB 3.0 Type A Female connector

USB Outside: USB 3.0 Type A Female connector

Cable: Type A Male to Male jumper cables included

Power capability: USB standard or up to 50 VDC at 1 amp. DC resistance each leg, 0.1 ohms max.

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.