National Instruments PXI-6561/6562 - Manual (Page 22)

NI Digital Waveform Generator/Analyzer Guide 22 ni.com
NI 656X Front Panels and Connectors
The NI 656X front panels contain four connectors—three SMB jacks
(CLK IN, PFI 0, and CLK OUT) and one 73-pin 12x Infiniband connector
(DIGITAL DATA & CONTROL, or DDC).
Figure 10 shows the NI 6561 front panels and pinout, which are identical to
those of the NI 6562. Signals marked with an asterisk represent the
complementary terminal for the differential signal of the same name. The
DDC signals are described in Table 6. The SMB connectors are the same as
those described in Table 7, and the LEDs are the same as those described in
Tables 8 and 9.
Note If you are designing a custom cabling solution with connector
(779157-01) and cable (192744-01), the NI 656X pinout is reversed
at the end connector. For example, the signal shown on pin 1 shown
in the previous figure would map to pin 73 at the end connector.
Table 5. NI 655X DDC Connector Pins
Pins
Signal
Name
Signal
Type Signal Description
33 DDC CLK
OUT Control Output terminal for the exported
Sample clock.
67 STROBE Control Terminal for the external Sample clock
source which can be used for pattern
acquisition.
13, 15, 17, 19,
21, 23, 25, 27,
29, 31, 47, 49,
51, 53, 55, 57,
59, 61, 63, 65 DIO <0..19> Data Bidirectional digital I/O data channels
0 through 19.
26, 30, 64 PFI <1..3> Control Input terminals to the NI 655X for
external triggers, or output terminals
from the NI 655X for events.
2, 4, 6, 10, 12,
14, 16, 18, 20,
22, 24, 28, 32,
34, 36, 38, 40,
42, 44, 46, 48,
50, 54, 56, 58,
62, 66 GND Ground Ground reference for signals.
1, 3, 5, 7, 8, 9,
11, 35, 37, 39,
41, 43, 45, 52,
60 RESERVED N/A These terminals are reserved for future
use. Do not connect to these pins.