Products / NTDS/ATDS


A high-performance NTDS interface for PCI bus computers

Versatile and reliable MIL-STD-1397c parallel communications for military systems

The PCI NTDS Parallel board connects computers with PCI bus slots to military computers and peripherals with MILSTD- 1397C Type A, B, C or H interfaces. IXI’s PCI NTDS is easy to program and offers a variety of input and output modes to support any NTDS protocol. Hardware-independent input and output channels allow the PCI NTDS to perform simultaneous input and output (full duplex) operations. NTDS type is software-selectable allowing quick reconfiguration without the use of hardware jumpers or switch settings. PCI NTDS boards can be used for passive tap applications as well as normal NTDS I/O. An on-board time stamp generator tags individual input words with 125 ns resolution. Time stamping is software-selectable and can be used with active or passive communications. All boards in the PCI NTDS family are software-compatible making it easy to mix parallel and serial NTDS boards in the same system as well as allowing transparent migration of applications between PCI, PMC, and cPCI versions of the PCI NTDS. Device driver software is available for the most commonly- used operating systems. For maintenance and reliability, PCI NTDS Parallel boards use short-circuit protected outputs to prevent failures due to improper cabling or NTDS type mismatch. An internal loop-back path allows the NTDS Interface to be tested without disconnecting cables. The NTDS Interface can be updated in the field by reconfiguring its Field Programmable Gate Array (FPGA) logic to add features or compensate for non-compliant interfaces. Using FPGA technology reduces component obsolescence, enabling the NTDS Interface to be deployed and supported for years to come.

Product Overview

• MIL-STD-1397C type A, B, C, and H compliant
• Full-duplex 8- ,16- or 32-bit NTDS transfers
• Interrupt, PIO & DMA operation
• Independent NTDS input and output channels
• Field Programmable Gate Array (FPGA) technology
• Separate word counters and time-outs for EI/EF words
and data words on inputs and outputs
• PCI 2.2 compliant (supports plug and play)
• Short-circuit protected, tri-state drivers
• PCI master and slave operation
• Internal loopback test without disconnecting NTDS
• Software-enabled time stamp on input words with 125ns
• Time stamps can be synchronized across multiple
• Supports receipt of multiple forced EF’s
• Software compatible with NTDS Interface PMC and NTDS Interface cPCI

General Product Features

Input Mode Features

• Separate or combined data and command word buffers
• Input command words, stop on data word
• Input data words, stop on command word
• Passive tap mode

Output Mode Features

• Concurrent data and command buffer operation

Time-out Mode Features

• Time-out values in 10μs or 1ms increments
• Time-out between words and/or total transfer times
• Start time-out at beginning of operation or upon transfer
of the first word

Software Drivers Available*

• Choice of driver included with board purchase:
Windows®, VxWorks®, Solaris™,
Linux®, LynxOS®, HP-UX, VreeBSD
*Contact factory for new OS support

Options and Accessories

• Cable Interface Modules (CIM)
• Adapter Modules
• Cable Assemblies
• Tap Accessories

NTDS Interface PCI NTDS Parallel Modules Technical Specifications

NTDS Interface

MIL-STD-1397C Type A, B, C, & H

PCI bus Interface

PCI 2.2 Compliant 32-Bit, 33/66 MHz, Universal Card
(3.3V or 5V I/O signaling)

Input Buffer

64K x 32-bit FIFO

NTDS I/O Connector

112 Pin Receptacle (Berg 50295-5112E)
120 Pin Receptacle (Molex 52755-1200)

Form Factor

6.875” x 4.2” (Standard PCI Short Card)


6.3 oz, 7.0 oz with internal connectors

Power Consumption

Average +5V current draw: 0.85A
Average +VI/O current draw: 5mA
Average Power Dissipated: 4.25W

Relative Humidity

0% to 90% (non-condensing)

Operating Temperature

0°C to +55°C

Type Title
Data Sheet Download
Manual Request Login
Software Request Login

Model Numbers

SW-02102-01 NTDS A/B/C/H, 64K FIFO, Standard, Low Power, 112 Pin
SW-02102-03 NTDS A/B/C/H, 64K FIFO, Standard, Low Power, 112 Pin
SW-02102-05 NTDS A/B/C/H, 64K FIFO, Standard, Low Power, 112 Pin, Internal Box Connectors with Latch Ejectors
SW-02102-06 NTDS A/B/C/H, 64K FIFO, Standard, Low Power, 112 Pin, Internal Box Connectors with No Latch Ejectors


AM-SW012-00 80 pin ribbon to M28840 (92 pin) recpt.
AM-SW018-00 80 pin ribbon to M81511 (85 pin) receptacles
AM-SW013-00 80 pin ribbon to D38999 (79 pin) receptacles
CA-28840-XX M28840 (92 pin) Cable Set**
CA-81511-XX M81511 (85 pin) Cable Set**
CA-38999-XX D38999 (79 pin) Cable Set**
CA-SW080-XX 80 pin Ribbon Cable Set**
TK-11278-00 Tap Cable Kit (connects to taps below)
AN-BT511-00 NTDS Parallel Isolation Tap, M81511
AN-BT840-00 NTDS Parallel Isolation Tap, M28840
AN-BT999-00 NTDS Parallel Isolation Tap, M38999
AN-PT000-00 Universal NTDS Parallel Breakout Box
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