JRE HDMI-2 Dual HDMI 1.4 (and higher) Filtered Interface

Test two HDMI devices in a sealed RF environment without compromising the video signal — both channels in a single housing. The HDMI-2's patented design is not a low-pass filter — it rejects wireless RF interference without touching the high-speed HDMI data the way conventional filters do.

• Two fully independent, fully passive HDMI filtered channels in one housing — saves I/O plate space versus two single filters
• HDMI version 1.4 and higher compliant, including HDMI Ethernet (HEC), ARC, CEC and HEAC, over standard Type-A connectors
• Patented signal-phasing topology (two US patents), NOT a low-pass filter — discriminates data from RF interference rather than attenuating both
• No inherent data-speed limit in the filter itself — achievable rate is set by total cable attenuation, not by the filter
• Same filter across HDMI versions — the version (1.x, 2.x) lives in the source and sink devices; the cable and the filter are the limiting factor, not the version number
• 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 2 m of HDMI cable — budget for it in your overall cable length
• Two HDMI 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 HDMI-2 is a fully passive dual HDMI filtered interface built into a single machined-aluminum housing that gives exceptional RF shielding on every data and control line. The two channels are completely independent — each is its own full HDMI filter — so a second display, capture device, or HDMI source costs you only one mounting footprint on the I/O plate instead of two. It uses standard HDMI Type-A connectors and is fully compliant with HDMI version 1.4 and higher, including the Ethernet, ARC, CEC and HEAC channels.

It works on an entirely different principle from older HDMI bulkheads. The earlier approach was simply a shielded HDMI feedthrough with no real filtering — isolation depended on the cable shield alone, which is leaky, especially at higher RF frequencies. You can't simply low-pass filter HDMI either: as the data rates climbed, the HDMI signal moved up into the same frequency band as the interfering wireless RF, so 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 HDMI data travels as balanced differential pairs 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 video clean — with no low-pass filtering anywhere on the data pairs, plus appropriately filtered control and low-frequency lines.

Speed and cables — what actually governs your data rate. Neither channel has a speed limit of its own; electrically each "looks like" about 2 meters of HDMI cable, and it's the total attenuation of the filter plus your connecting cables that sets the achievable rate. For everyday HDMI that's a non-issue. For the higher-rate versions and longer runs, use an active (RedMere-style) cable on the external side — it regenerates and equalizes the signal to overcome the filter's equivalent length. Contact us and we'll help you pick one for your devices and cable lengths.

Only need one HDMI port? The JRE HDMI-1 is the single-channel version. For the full cable-length, active-cable, and speed discussion that applies to all our high-speed data filters, see USB-3 and USB-C Special Considerations — the same principles apply to HDMI.

Download datasheet: HDMI-2

Download hole pattern and drawing: HDMI2 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 two 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 5 dB
• 80 dB isolation in test system configuration
• Data Line Balanced Impedance: 90 Ohms typical
• Low frequency lines: 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

HDMI Inside: HDMI Type A Female connector

HDMI Outside: HDMI Type A Female connector

Cable: Type A Male to Male jumper cable included

Power capability: HDMI 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.