Excalibur Systems

The EXC-UNET2/xx is a multi-protocol test and simulation adapter for USB or Ethernet equipped computers. Its small size and ability to interface through USB or Ethernet interfaces make it a complete solution for developing, testing and performing system simulation of a number of communications protocols, both in the lab and in the field.

Multiple units can operate via USB ports on the same computer. In addition, multiple units can operate on the same network, by programming each one with a unique IP address, and can be accessed from any computer on the network.

It supports up to four independent avionics communication modules, allowing multiple different protocols to be mixed and matched on a single card. 

Modules available include MIL-STD-1553,  MIL-STD-1760,  MMSI, ARINC-429,  ARINC-708, Serial, Discrete and CAN bus. Please see multi protocol 8000 modules for additional information on protocols that can be added to this card.

The EXC-Unet2 supports extensive error injection and detection capabilities, IRIG B Time Code input, and can be ordered with conformal coating. The EXC-Unet2 is supplied with C drivers, including source code. Mating connector provided for I/O connection.

Ordering Information:

Part Number      Description
EXC-Unet2/xx Multi-protocol interface for USB or Ethernet equipped computers

"xx” specifies the modules ordered with the carrier board (up to 4 modules) see below for module codes.
"-001" added to the end of the part number specifies conformal coating option.


ARINC-429 Modules

A0 - 5 Channels ARINC 429 module, Software selectable for Receive or Transmit


ARINC-708 Modules 

C0 - 2 Channels ARINC 708/453 module, SW selectable as Tx or Rx


MIL-STD-1553 multi-function Modules

F1- Transformer coupled mode

F2- Direct coupled mode


MIL-STD-1760 single function Modules 

H1- 1760 Transformer coupled mode

H2- 1760 Direct coupled mode


Discrete Modules 

I0- 10 Ch Discrete, SW selectable for In/Out and TTL/Avionics 0-32 Volt thresholds


Serial Modules 

J1- Ch0 RS232, Ch1 RS232

J4- Ch0 RS485, Ch1 RS485

J2- Ch0 RS232, CH1 RS485

J5- Ch0 RS485, CH1 RS422

J3- Ch0 RS232, CH1 RS422

J6- Ch0 RS422, CH1 RS422


MIL-STD-1760 multi-function Modules

L1- 1760 Transformer coupled mode

L2- 1760 Direct coupled mode


MIL-STD-1760 monitor only Modules

M1- PxM-1760 Transformer coupled mode

M2- PxM-1760 Direct coupled mode


ARINC-717 1Rx & 1Tx channels Modules

N1- HBP signals

N2- BPRZ signals


MMSI Modules

R5- 5 ports EBR-1553 hub +1 cBM port (10 Mbps 1553 protocol, RS-485 front-end)

R2- 2 EBR-1553 hub ports and 1 cBM port

R4- 4 EBR-1553 hub ports and 1 cBM port

R6- 6 EBR-1553 hub ports and no cBM port


ARINC-825 (Canbus) Modules 

S2- 825CAN 2ch

S4- 825CAN 4ch

S3- 825CAN 3ch

S5- 825CAN 5ch


MIL-STD-1553 single function Modules

T1- Transformer coupled mode

T2- Direct coupled mode


MIL-STD-1553 monitor only Modules

V1- Transformer coupled mode

V2- Direct coupled mode


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