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NI Digital Waveform Generator/Analyzer Getting Started Guide
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© National Instruments
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23
Figure 14 shows the NI 6541 front panel and DDC pinout, which is identical to the DDC pinout
of the NI 6542/6544/6545/6547/6548, though the NI 6544/6545/6547/6548 uses SMA instead
of SMB connectors. The DDC signals are described in Table 1. The SMB connectors are
described in Table 7. The LEDs are described in Tables 8 and 9.
Figure 14.
NI 654
x
Front Panel Connectors
NI PXI-6541
50 MHz Digit
a
l I/O
DIGIT
AL D
A
T
A
& CONTR
OL
PFI 0
ACCE
SS
ACTIVE
CLK
IN
CLK
OUT
3
5
3
6
3
7
38
3
9
40
41
42
4
3
44
45
46
47
4
8
49
50
51
52
5
3
54
55
56
57
5
8
59
60
61
62
6
3
64
65
66
67
6
8
1
2
3
4
5
6
7
8
9
10
11
12
1
3
14
15
16
17
1
8
19
20
21
22
2
3
24
25
26
27
2
8
29
3
0
3
1
3
2
33
3
4
DIO
3
1
GND
DIO 29
GND
DIO 27
GND
DIO 25
RE
S
ERVED
DIO 2
3
GND
DIO 21
GND
DIO 19
GND
DIO 17
GND
DIO 15
GND
DIO 1
3
GND
DIO 11
GND
DIO 9
GND
DIO 7
PFI 1
DIO 5
GND
DIO
3
PFI
3
DIO 1
GND
DDC CLK OUT
GND
DIO
3
0
GND
DIO 2
8
GND
DIO 26
GND
DIO 24
GND
DIO 22
GND
DIO 20
GND
DIO 1
8
GND
DIO 16
GND
DIO 14
RE
S
ERVED
DIO 12
GND
DIO 10
GND
DIO
8
GND
DIO 6
RE
S
ERVED
DIO 4
GND
DIO 2
PFI 2
DIO 0
GND
S
TROBE
GND
PFI
0
CLK
IN
CLK
OUT
NI PCI-6541
DIGITAL
DATA &
CONTROL
The Digit
a
l D
a
t
a
& Control connector pino
u
t
i
s
the
sa
me for PXI
a
nd PCI device
s
.