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North Hills is a leading world wide supplier of MIL-STD-1553 data bus couplers, testers, and accessories such as cable, connectors, terminators, dust caps, etc. We are a one-stop shop with a variety of custom and off-the-shelf products. Our data bus couplers use transformers with superior performance and product consistency, manufactured in accordance with MIL-T-21038 with excellent common mode rejection ratios. North Hills has been designing and manufacturing transformers since 1953 and is an approved supplier for all major military programs.

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A comprehensive tutorial on data bus can be found in Application Note 251: Factors in the Selection of MIL-STD-1553 Couplers, Connectors and Harnesses

MIL-STD-1553 Data Bus Couplers
North Hills line of In-Line and Box-Type Data Bus Couplers and Terminators offer MIL-STD-1553 users devices with up to eight (8) transformer coupled output ports. These units are available with or without internal terminations and can be supplied with a variety of different connectors and cables (MIL-C-17/176-00002 is standard).

Data Bus Relay Devices
North Hills offers a series of bus switching relays designed for use in the test and simulation of MIL-STD-1553 data buses. They are particularly useful in reconfiguring bus systems.

MIL-STD-1553 Space Qualified Data Bus Couplers
North Hills has developed a wide variety of couplers suitable for installation on satellites or lift vehicles. They are available as either In-Line or Box-Type Couplers but can also be supplied in configurations that meet your custom specifications and withstand your special environmental requirements. North Hills can also provide complete harness assemblies designed to your specifications.

Data Bus Transformers
The North Hills DX Line of Data Bus Transformers has been designed specifically for MIL-STD-1553 applications and provides superior wave shape characteristics and extra margin of CMR

MIL-STD-1553 Network Testers
North Hills offers easy-to-use DBT100A and DBT300 handheld testers for system integration applications to quickly troubleshoot or test a MIL-STD-1553B Data Bus Network. These lightweight and portable test units can detect shorts, opens, crossovers and shorts-to-shield on the bus and stubs. The testers are designed so the user can perform these checks from the Line Replaceable Unit (LRU) ends of the stub cables. In the DC resistance test modes, the tester functions as a general purpose ohmmeter with a range of 0 to 199.9 ohms.  The DBT300 includes Return Loss and Insertion Loss tests to easily benchmark network characteristics.

Data Bus Cable Assemblies & Accessories
We stock standard lengths of patch cords and accessories for the MIL-STD-1553 interface. Accessories include Terminators, Triax Cable Plugs, Bulkhead Cable Jacks, etc.   For flight applications or on the test bench, North Hills has the right accessory for you.

Application Notes:

The North Hills Data Bus On-line Store facilitates convenient quick-response purchases of popular stock items.

Access the On-Line Store