National Instruments NI 6581 Getting Started Manual page 7

output ratings for each signal, refer to the NI 6581/NI 6581B Specifications,
available from ni.com/manuals.
Signal Name
GLOBAL
CLOCK 0
GLOBAL
CLOCK 1
P0.<0..7>
P1.<0..7>
P0.<0..7>
CLOCK OUT
PFI <1..3>
GND
RESERVED
No Connect
The following table contains external power connector terminal information for the NI 6581.
6 | ni.com | NI 6581/6581B Getting Started Guide
Table 2. NI 6581 DDC Connector Pins
Pin(s)
67 on DDCA
67 on DDCB
25, 27, 29, 31, 59, 61,
63, 65
17, 19, 21, 23, 51, 53,
55, 57
9, 11, 13, 15, 43, 45,
47, 49
33
26, 30, 64
2, 4, 6, 8, 10, 12, 14,
16, 18, 20, 22, 24, 28,
32, 34, 36, 38, 40, 42,
44, 46, 48, 50, 52, 54,
56, 58, 62, 66
1, 3, 5, 7, 35, 37, 39,
41
60
Signal Type
Control Input terminal for the external
Sample Clock source, which can
be used for dynamic acquisition.
Data/Control Bidirectional Port 0 digital I/O
data channels 0 through 7.
Data/Control Bidirectional Port 1 digital I/O
data channels 0 through 7.
Data/Control Bidirectional Port 2 digital I/O
data channels 0 through 7.
Control Output terminal for the exported
Sample Clock.
Control/Data Bidirectional digital I/O channels
1 through 3.
Ground Ground reference for signals.
N/A These terminals are reserved for
future use. Do not connect to
these pins.
N/A Do not connect to this pin.
Signal Description