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NI Digital Waveform Generator/Analyzer Guide 20 ni.com
Table 4. NI 654X 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.
1, 3, 5, 7, 9,
11, 13, 15, 17,
19, 21, 23, 25,
27, 29, 31, 35,
37, 39, 41, 43,
45, 47, 49, 51,
53, 55, 57, 59,
61, 63, 65
DIO <0..31> Data Bidirectional digital I/O data channels
0 through 31.
26, 30, 64 PFI <1..3> Control Input terminals to the NI 654X for
external triggers, or output terminals
from the NI 654X 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.
8, 52, 60 RESERVED N/A These terminals are reserved for future
use. Do not connect to these pins.