connecting cables and employ industry-standard ESD prevention measures during
installation, maintenance, and operation.
Figure 4.
NI 5661 Front Panel Interconnection
TRIG
CH 0
NI PXI-5142
ACCESS
ACTIVE
CH 1
AUX I/O
+5 V
MAX
CLK IN
CLK OUT
100 MS/s OSP Digitizer
NI 5600
POWER
STATUS
RF DOWNCONVERTER
+20 dBm MAX
+30 dBm MAX
WITH ATTN
± 5 V DC MAX
PXI 10 MHz I/O
± 5 V DC MAX
+23 dBm MAX
3
2
1
1. Semi-Flexible SMA-to-BNC Cable
2. Semi-Flexible SMA-to-SMB Cable
3. (Optional) Semi-Flexible SMA-to-SMA Cable
1.
Using the short semi-flexible SMA-to-BNC coaxial cable, connect the OUTPUT
connector on the NI 5600 front panel to the CH 0 connector on the NI 5142 front panel.
2.
Using the long semi-flexible SMA-to-SMB coaxial cable, connect the lower of the two
10 MHz OUT connectors on the NI 5600 front panel to the CLK IN connector on the
NI 5142 front panel.
3.
(Optional) Using the semi-flexible SMA-to-SMA coaxial cable center pin, connect the
bidirectional PXI 10 MHz I/O connector on the NI 5600 front panel to the other
10 MHz OUT connector on the NI 5600 front panel. This connection drives the
PXI 10 MHz backplane with the NI 5600 onboard frequency reference.
Note
You can use this connection to drive the PXI 10 MHz backplane clock
only when the NI 5600 RF downconverter module is installed in Slot 2 of a
PXI chassis.
4.
Hand-tighten all SMA cable ends on the SMA connectors after the cable center pins are
correctly aligned and connected. The cable connectors should tighten without much
torque or effort. If a cable bends due to incorrect alignment, remove the cable from the
NI PXI-5661 Getting Started Guide
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© National Instruments
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7
