Products / NTDS/ATDS


The optimum ntds solution for CompactPCI systems

Impressive performance with unmatchable features and flexibility

The CompactPCI (cPCI NTDS) utilizes our state-of-the-art NTDS Interface PMC technology to provide high-performance MILSTD- 1397C NTDS channels for cPCI NTDS systems. It comes in 3U or 6U versions configured with NTDS parallel or serial types A, B, C, D, E or H. The 6U version allows for up to two channels of any combination to reside in a single slot which significantly reduces space requirements, especially for systems with numerous I/O channels; it also includes hotswap. The cPCI 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 cPCI NTDS to perform simultaneous input and output (full duplex) operations. On parallel channels, the NTDS type is software-selectable allowing quick reconfiguration without the use of hardware jumpers or switch settings. The cPCI NTDS 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 NTDS Interface 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 NTDS versions of the cPCI NTDS. Device driver software is available for the most commonly-used operating systems. For maintenance and reliability, cPCI NTDS parallel channels use short-circuit protected outputs to prevent failures due to improper cabling or NTDS type mismatch. An internal loopback path allows the cPCI NTDS to be tested without disconnecting cables. The cPCI NTDS 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 cPCI NTDS to be deployed and supported for years to come.

Product Overview

• Single or dual NTDS I/O channels
• Interrupt, PIO & DMA operation
• Independent, full duplex NTDS input and output channels
• Field Programmable Gate Array (FPGA) technology
• Separate word counters and time-outs for EI, EF, ID and OD
• PCI master and slave operation
• Internal loopback test without disconnecting NTDS cables
• Software enabled time stamp on input words with 125ns resolution
• Time stamps can be synchronized across multiple interfaces
• Supports receipt of multiple forced EFs
• Software-compatible with NTDS Interface PCI and PMC boards

NTDS Parallel Type A/B/C/H

• 8-, 16- or 32-bit NTDS transfers
• Software-selectable NTDS type
• Short circuit protected, tri-state NTDS drivers

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
*Contact factory for new OS support

Options and Accessories

• Adapter Modules
• Cable Assemblies
• Tap Accessories

cPCI NTDS General Technical Specs

PCI bus interface

PCI 2.1 compliant 32 Bit, 33MHz, universal card (3.3V or 5V I/O signaling)

Form factor

Eurocard 3U (Single Channel) or 6U (Dual Channel) CompactPCI (rear I/O option with RTM and optional dual GB Ethernet )


Single Channel: 8.6 oz. Dual Channel: 15 oz.

Power consumption

Configuration dependent – contact factory

Relative humidity

0% to 90% (non-condensing)

Operating temperature

0°C to +55°C

NTDS Parallel Technical Specs
NTDS interface

MIL-STD-1397C Type A/B/C/H

Input buffer

64K x 32-bit FIFO

NTDS I/O connector

120 pin docking connector (Molex 52755-1200)

Power consumption

Average +5V Current Draw: .85A
Average +VI/O Current Draw: 5mA
Average Power Dissipated: 4.25W

Type Title
Data Sheet Download
Manual Request Login
Software Request Login

Model Numbers

SC-01108-00 SWIFT-PAK cPCI 3U, ABCH, 120-PIN HDC


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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