PFI 0
PFI 1
NI PXI-54X X
ACCESS
ACTIVE
CLK
IN
CH 0
DIG
IT
AL
D
A
T
A
&
CON
T
R
O
L
CH
0
PFl
0
DI
G
IT
AL
D
A
T
A
&
CON
T
R
O
L
NI PCI-54XX
CLK
IN
PFl
1
Figure 8. NI PXI/PCI-5421 Front Panel (NI PXI/PCI-5412/5422/5441 devices are similar)
Note
The DIGITAL DATA & CONTROL (DDC) connector is not available on the NI 5412
or the NI 5421/5422 with the 8 MB memory option.
Table 5. NI PXI/PCI-5412/5421/5422/5441 Front Panel Connectors
Function
Access
Connector
Provides the waveform output.
Output
CH 0
Accepts a PLL Reference clock from
an external source and can frequency
lock the Sample clock timebase to
the external Reference clock. The
signal on this connector can also be
used as a Sample clock source.
Input
CLK IN
NI Signal Generators Getting Started Guide
18
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