Astronics OMNIBUS II NI PXIe, User Manual

Page: 52 / 67

CONNECTOR PINOUTS
OmniBus II NI PXIe User Manual 7-5
7.4 Standard Cables
Ballard sells a number of different cables that are useful for wiring to OB2
products. Each cable has a standard length. Non-standard lengths may be specified
by adding a /xx suffix after the part number, where xx is the length in feet. For
example, a 16036/10 is a ten-foot-long 16036.
7.4.1 PN 16036 Cable Assembly: LFH to Two 25-pin D-subs
A three-foot-long Y-cable adapts a 60-pin male LFH plug (labeled P1) to two
25-pin male D-subminiature connectors (P2 and P3). Because of the size and
popularity of D-sub connectors, some users may find it easier to interface to them
than to the OB2 LFH connectors. As you can see from Table 7.1, there is
symmetry between the upper and lower halves of the LFH connector. On the
16036 cable assembly, you can wire the upper half of the LFH connector to one
D-sub and the lower half to the other D-sub, thus giving similar signals on the
corresponding pins of both D-subs. The wire pairs on the 16036 are different
from those on the 16035. Table 7.4 below shows the wiring for the 16036 cable.
P2 Pair #
From
P1 pin
To
P2 pin Name P3 Pair #
From
P1 pin
To
P3 pin Name
1 3 3 BUS0P 1 33 3 BUS8P
1 2 15 BUS0N 1 32 15 BUS8N
2 28 2 BUS1P 2 58 2 BUS9P
2 29 14 BUS1N 2 59 14 BUS9N
3 5 4 BUS2P 3 35 4 BUS10P
3 4 16 BUS2N 3 34 16 BUS10N
4 26 5 BUS3P 4 56 5 BUS11P
4 27 17 BUS3N 4 57 17 BUS11N
5 7 6 BUS4P 5 37 6 BUS12P
5 6 18 BUS4N 5 36 18 BUS12N
6 24 8 BUS5P 6 54 8 BUS13P
6 25 19 BUS5N 6 55 19 BUS13N
7 9 9 BUS6P 7 39 9 BUS14P
7 8 20 BUS6N 7 38 20 BUS14N
8 22 10 BUS7P 8 52 10 BUS15P
8 23 21 BUS7N 8 53 21 BUS15N
9 11 11 CDIO0 9 41 11 CDIO3
9 10 23 GND 9 40 23 GND
10 17 12 IRIG* 10 47 12 IRIG*/10MHZ
10 19 24 CDIO5 10 49 24 CDIO6
11 13 13 CDIO4 11 43 13 CDIO7
11 15 25 NC/5V 11 45 25 NC/5V
12 21 22 CDIO1 12 51 22 CDIO2
12 20 1 GND 12 50 1 GND
13 14 7 CGND 13 44 7 CGND
Braids connected shell to shell
Table 7.4—Wiring Chart for 16036 Cable Assembly
(See next page for “*” note)