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National Instruments Corporation
17
NI High-Speed Digitizers Getting Started Guide
Table 4 describes the signal connections for the NI 5122/5124/5142/5922.
Figure 8 shows the pin assignments for the 9-pin DIN connector.
Figure 8.
9-Pin DIN Connector Pin Assignments for NI 5114/5122/5124/5142/5922
Table 4.
NI 5122/5124/5142/5922 Front Panel Signal Connections
Connector
Description
Function
CH 0,
CH 1
Standard BNC
female connector
Analog input connection; digitizes data and
triggers acquisitions.
TRIG
Standard BNC
female connector
External analog trigger connection; signals
on the TRIG connector cannot be digitized.
CLK IN
Standard SMB
jack connector
NI 5122/5124/5142
: Input for an external
reference or sample clock to the digitizer.
NI 5922
: Input for an external reference clock
to the digitizer.
CLK OUT
Standard SMB
jack connector
NI 5122/5124/5142
: Output for the reference
or sample clock.
NI 5922
: Output for the reference clock.
AUX I/O
9-pin mini-circular
DIN connector
Provides access to the multipurpose digital
timing and triggering lines, PFI 0, and PFI 1
(with optional cable). For pinout information,
refer to Figure 8.
1
+5 V (Fused)
2
GND
3
Reserved
4
Reserved
5
Reserved
6
PFI 1
7
Reserved
8
Reserved
9
PFI 0
4
3
5
6
7
8
9
1
2
