Astronics OMNIBUS II NI PXIe, User Manual

Page: 48 / 67

OmniBus II NI PXIe User Manual 7-1
7. CONNECTOR PINOUTS
The standard connector on the OB2 products is a 60-pin Molex
®
LFH™ receptacle.
Each OB2 module (core) has an LFH connector dedicated to it. Signals on the LFH
connector are either general purpose or module specific. General-purpose signals
(including triggers, syncs, core discretes, and timing) are common to most modules
and protocols. The databus signals are module specific,—their use and meaning
depend on the protocol and functionality of the associated OB2 module. This
chapter provides the information needed to connect to the individual modules
through the LFH connector. Should your OB2 product have a different connector
or a module not listed here, please consult other documentation provided with the
product or call Customer Support (see Section 1.5).
Ballard offers a number of special cable assemblies to facilitate the use of their
OB2 product line.
7.1 Interface Connector
The user interface connector on OB2 products is a Molex 60-pin LFH receptacle
(Molex PN 70928-2000). The recommended mating connector is a cable plug
assembly consisting of a frame subassembly (Molex PN 70929-2000) and four
terminal strips (Molex PN 51-24-2022). For more information, consult
www.molex.com. Appropriate shields, strain-reliefs, and backshells are also re-
quired. The LFH is a high-density connector about the size of a 15-pin
D-subminiature connector. For proper clearance from adjacent connectors, the
overall length of each LFH connector (including any backshell molding) must not
exceed 1.64 inches.