Held as new-surplus stock in its factory packaging, the DS3800HDRA1B1B is the Mark IV line driver/receiver board that maintains data communication between GE Speedtronic panels. Cleaned and tested and backed by a one-year warranty, it is a sensible board to keep on hand for a control system that cannot afford a communication outage.

A factory-packaged DS3800HDRA1B1B communication spare

The HDRA is the board that lets a Mark IV talk. It buffers and drives outgoing serial signals so they carry across the distance between cabinets and receives incoming signals while suppressing electrical noise. Physically it offers two 40-pin connectors at the front, two jumpers for configuration, and levers to retain it in the rack. Supplied unused in original packaging, this unit is ready to become the drop-in spare you reach for when a link goes down — store it in its anti-static wrap until then, and keep the jumper configuration of your installed board on file so a swap is quick.

Symptoms that point here — and ones that don't

Not every communication alarm is a driver/receiver failure. Symptoms that can implicate the HDRA include a dead or intermittent link on one path, corrupted data, or a panel that intermittently drops off. But the same symptoms are produced by problems that have nothing to do with this board:

• A damaged or partially unseated cable at either 40-pin connector.
• Jumpers set differently from the board that was removed.
• A failed device at the far end of the link, or a break in the cable run.
• Low or unstable rack power weakening the transmitted signal.
• The media-access board arbitrating the bus, which can halt traffic even when the driver/receiver is fine.

Confirm those are healthy first; if the fault stays with this board's slot, the HDRA is the part to change.

How DS3800 + HDRA + group code fit together

Read DS3800HDRA1B1B in three parts: DS3800 is the Mark IV printed-circuit-board family, HDRA is the line-driver/receiver function, and 1B1B is the group/revision suffix that fixes the exact build. Because that suffix is what separates one revision from another, match it to your existing board, or let us verify compatibility if you can only source a different revision. The GE Speedtronic Part Number Decoder is a useful reference for reading these numbers in full.

Related Mark IV line and media boards

Keeping a communication link alive usually means having more than one board covered. The HDRA pairs with the DS3800HMAC media access board and the DS3820MAUD module that carries it; together they form the communication path for the Mark IV system bus. If you are stocking spares for an aging system, our Mark V vs Mark VI: DS200 to IS200 guide also puts later control generations in context. Browse current stock in the GE Mark IV DS3800 Boards collection.

Requesting your quote

To get a fast, accurate response, send us:

• The complete part number and suffix (DS3800HDRA1B1B).
• A photo of the board label and its revision markings.
• The Mark IV panel and turbine the spare is for.
• Quantity and urgency, noting any unit that is down.

Request a Quote and expect a reply within 24 hours. We ship worldwide DDP, accept purchase orders from qualified accounts, and can bundle companion communication boards into a single quotation.

General Information about the Product
Part Number	DS3800HDRA1B1B Mark IV DS3800
Description	GE General Electric DS3800HDRA1B1B DS3800HDRA Line Driver And Receiver Board NEW
Condition	newSurplusFactoryPackage Cleaned and Tested. With 1 Year Warranty.