National Instruments PXIe-5665, Getting Started Manual, Page: 11 / 33

Figure 5. PXIe-5665 14 GHz Front Panel Interconnection
OUT
NI PXIe-5653
Synthesizer
REF IN
10 MHz
5 V p-p MAX
REF OUT
10 MHz
1.5 V p-p MAX
REF OUT
100 MHz
1.5 V p-p MAX
LO3
800 MHz
LO2
4 GHz
LO1
3.2 GHz - 8.3 GHz
ESD
SENSITIVE
OUT
ALL PORTS
50
NI PXIe-5605
Downconverter 20 Hz - 14 GHz
ACCESS ACTIVE
CLK IN
CLK OUT
PFI 1
ESD
SENSITIVE
TT L
6.3 Vp-p
MAX
2 Vp-p
NOM
+20 dBm MAX
50
50
50
NI PXIe- 562 2
16-Bit IF Digitizer
IF IN
LO1
LO2
LO3
IN
ESD
SENSITIVE
OUT
LO3
LO2
LO1
ALL PORTS
50
+15 dBm MAX
25 V DC MAX
+15 dBm MAX
0 V DC
ACCESS ACTIVE
RF IN
0 V DC
+20 dBm MAX > 10 MHz
+10 dBm MAX < 10 MHz
IF OUT
+22 dBm MAX
0 V DC
K
K
1
2
3
4
1. Short, Silver Flexible RF SMA-to-SMA Cable
2. Flexible RF SMA-to-SMA Cable 3. Short, Semi-Rigid SMA-to-SMA Cable, Labeled K
4.
50 Ω
Termination Load
1. Using the three short, silver flexible RF SMA-to-SMA cables, connect the LO1, LO2,
and LO3 connectors on the PXIe-5653 front panel to the associated LO1 IN, LO2 IN, and
LO3 IN connectors on the PXIe-5603 or PXIe-5605 front panel.
2. Using the flexible SMA-to-SMA cable, connect the REF OUT 100 MHz connector on the
PXIe-5653 front panel to the CLK IN connector on the PXIe-5622 front panel.
3. Using the short semi-rigid SMA-to-SMA cable (labeled K), connect the IF OUT
connector on the PXIe-5603 or PXIe-5605 front panel to the IF IN connector on the
PXIe-5622 front panel.
4. Install a 50 Ω termination load on each of the PXIe-5603 or PXIe-5605 module
LO1 OUT, LO2 OUT, and LO3 OUT connectors.
5. 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
front panel connector and reconnect the cable center pin on the SMA cable to the SMA
connector.
6. Carefully complete tightening all SMA connectors to 1 N · m using an appropriate torque
wrench (not included) or torque screwdriver and SMA driver bit. Tighten only until the
wrench clicks.
Caution
Incorrect torque at SMA connections can degrade signal fidelity and
phase-locked loop (PLL) performance and may cause insertion loss. Use an
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