National Instruments PXIe-5693 Manual

CALIBRATION PROCEDURE
NI PXIe-5693
RF Preselector Module
This document contains the verification and adjustment procedures for the National Instruments
PXIe-5693 (NI 5693) RF preselector module. Refer to ni.com/calibration for more
information about calibration solutions.
Contents
Required Software .................................................................................................................... 2
Related Documentation ............................................................................................................ 2
Test Equipment......................................................................................................................... 2
Test Conditions......................................................................................................................... 10
Initial Setup............................................................................................................................... 10
Characterizing the Test System ................................................................................................ 10
Designating the Power Splitter Reference Output............................................................ 11
Zeroing and Calibrating the Power Sensor....................................................................... 11
Characterizing the RF Source 1 Power (Direct) ............................................................... 11
Characterizing the RF Source 2 Power (Direct) ............................................................... 13
Characterizing the RF Source Power (with Splitter and Attenuator) ............................... 14
Characterizing the RF Source Power (with Combiner, Splitter, and 20 dB
Attenuator).....................................................................................................................15
Characterizing the Spectrum Analyzer (with Cable and 10 dB Attenuator) .................... 18
As-Found and As-Left Limits................................................................................................... 19
Verification ............................................................................................................................... 19
Verifying Noise Figure ..................................................................................................... 19
Verifying In-Band Third Order Intercept (TOI)............................................................... 24
Verifying Out-of-Band TOI.............................................................................................. 29
Verifying Reverse Isolation.............................................................................................. 34
Verifying Calibration Signal Amplitude Accuracy .......................................................... 38
Adjustment................................................................................................................................ 41
Adjusting RF Gain............................................................................................................ 41
Adjusting Cal Tone Power Accuracy ............................................................................... 44
Reverification ........................................................................................................................... 47
Appendix A: Test Frequencies for RF Gain Adjustment ......................................................... 47
Appendix B: Test Frequencies for Cal Tone Amplitude Adjustment ...................................... 51
Worldwide Support and Services ............................................................................................. 54

2|ni.com |NI PXIe-5693 Calibration Procedure
Required Software
Calibrating the NI 5693 requires you to install the following software on the calibration system.
• NI-RFSA 2.6 or later
• NI Spectral Measurements Toolkit 2.6 or later
You can download all required software from ni.com/downloads.
The software supports programming the calibration procedures in the LabVIEW, C, and
LabWindows™/CVI™ application development environments (ADEs). When you install the
software, you need to install support only for the ADE that you intend to use.
Related Documentation
You might find the following documents helpful as you perform the calibration procedure:
•NI 5693 RF Preselector Module Getting Started Guide
•NI 5667 (3.6 GHz) Spectrum Monitoring Receiver Getting Started Guide
•NI 5667 (7 GHz) Spectrum Monitoring Receiver Getting Started Guide
•NI RF Vector Signal Analyzers Help
•NI PXIe-5693 Specifications
•NI PXIe-5667 (3.6 GHz) Specifications
•NI PXIe-5667 (7 GHz) Specifications
The latest versions of these documents are available on ni.com/manuals.
This calibration procedure calibrates the NI 5693 as an independent module. To calibrate the
NI 5693 as a part of the NI PXIe-5667 (NI 5667), refer to the NI PXIe-5667 Calibration
Procedure document available at ni.com/manuals.
Test Equipment
Table 1 lists the equipment NI recommends for the performance verification and adjustment
procedures. If the recommended equipment is not available, select a substitute using the
minimum requirements listed in the table.

NI PXIe-5693 Calibration Procedure |© National Instruments |3
Table 1. Recommended Equipment for NI 5693 Calibration
Equipment Recommended Models Where Used Minimum Requirements
Noise source NoiseCom NC346B Precision Noise figure verification Frequency: 10 MHz to 8 GHz
Output ENR: 14 dB to 16 dB
VSWR: 1.25
Spectrum analyzer Rohde & Schwarz
FSU26 Options B23, B25
Test system characterization
Verifications:
• Noise figure
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
Frequency range: 20 MHz to 8 GHz
Internal preamplifier
Noise source control (28 V supply, BNC
connector)
Power meter Anritsu ML2438A Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Adjustments:
•RFgain
• Calibration tone power
accuracy
Display resolution: ≤0.01 dB
Settling: ±0.1%
Instrumentation accuracy: <±0.5%
Noise, zero set, and drift: ≤±0.5% full-scale
(lowest range)
Reference power uncertainty: ≤±0.9%
Reference output VSWR: <1.04

4|ni.com |NI PXIe-5693 Calibration Procedure
(2x) Power sensor
(power sensor A)
(power sensor B)
Anritsu MA2473D Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Adjustments:
•RFgain
• Calibration tone power
accuracy
Power range: -55 dBm to 20 dBm
Frequency range: 10 MHz to 8 GHz
Input VSWR:
10 MHz to 50 MHz ........................<1.90
50 MHz to 2 GHz...........................<1.12
2 GHz to 8 GHz .............................<1.22
Linearity:
-60 dBm to 20 dBm........................<1.8%
Calibration factor uncertainty:
10 MHz to 50 MHz ........................<1.9%
50 MHz to 500 MHz ......................<1.5%
500 MHz to 7 GHz.........................<1.5%
7 GHz to 8 GHz .............................<1.9%
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

NI PXIe-5693 Calibration Procedure |© National Instruments |5
(2x) Signal
generator
(RF source 1)
(RF source 2)
Anritsu MG3692C
Options 2A, 3, 4, 15A, and 22
Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Adjustments:
•RFgain
• Calibration tone power
accuracy
Frequency range: 8 MHz to 8 GHz
Leveled power: -115 dBm to 18 dBm
Power accuracy: ±1.5 dB
Harmonics:
0.1 MHz to ≤10 MHz.....................<-30 dBc
>10 MHz to ≤100 MHz .................<-40 dBc
>100 MHz to ≤2.2 GHz .................<-50 dBc
>2.2 GHz to ≤8 GHz......................<-30 dBc
Nonharmonic Spurious:
0.1 MHz to ≤10 MHz.....................<-30 dBc
>10 MHz to ≤2.2 GHz ...................<-60 dBc
>2.2 GHz to ≤8 GHz......................<-60 dBc
Output VSWR: <2.0
(4x) SMA (m)-to-
SMA (m) cable
(36 in.)
MegaPhase G916-SISI-36 —Frequency range: DC to 8 GHz
Insertion loss: ≤2 dB at 8 GHz
Impedance: 50 Ω
VSWR: ≤1.35 at 8 GHz
SMA (f)-to-
SMA (m)
semi-rigid cable
(1.08 in. with
slight angle bend)
Rosenberger 166782A-01 —Frequency range: DC to 8 GHz
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

6|ni.com |NI PXIe-5693 Calibration Procedure
(2x) BNC (m)-to-
BNC (m) cable
(36 in.)
NI 763485-01 Noise figure verification —
(2x) BNC (m)-to-
BNC (m) cable
— — —
SMA (m)-to-
SMA (m) adapter
Huber+Suhner
32_SMA-50-0-52/199_NE
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Adjustments:
•RFgain
• Calibration tone power
accuracy
Frequency range: DC to 8 GHz
VSWR: <1.14
SMA (f)-to-
SMA (f) adapter
Huber+Suhner
31_SMA-50-0-1/111_NE
Noise figure verification Frequency range: DC to 8 GHz
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

NI PXIe-5693 Calibration Procedure |© National Instruments |7
SMA (m)-to-
SMA (f)
10 dB attenuator
Huber+Suhner
6610_SMA-50-1/199N
Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
Frequency range: DC to 8 GHz
Attenuation: 10 dB (nominal)
Power rating: 2 W average
Impedance: 50 Ω
VSWR:
DC to 4 GHz ..................................≤1.15
4 GHz to 8 GHz .............................≤1.20
SMA (m)-to-
SMA (f)
20 dB attenuator
Huber+Suhner
6620_SMA-50-1/199N
Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Frequency range: DC to 8 GHz
Attenuation: 20 dB (nominal)
Power rating: 2 W average
Impedance: 50 Ω
VSWR:
DC to 4 GHz ..................................≤1.15
4 GHz to 8 GHz .............................≤1.20
SMA (m)-to-
SMA (f)
6 dB attenuator
Anritsu 41KB-6 Test system characterization
Calibration signal amplitude
accuracy verification
Adjustments:
•RFgain
• Calibration tone power
accuracy
Frequency range: DC to 8 GHz
Attenuation: 6 dB
Power rating: 2 W average
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

8|ni.com |NI PXIe-5693 Calibration Procedure
Power splitter
(two-resistor type)
Aeroflex/Weinschel 1593 Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
• Reverse isolation
• Calibration signal amplitude
accuracy
Adjustments:
•RFgain
• Calibration tone power
accuracy
Frequency range: DC to 8 GHz
Amplitude tracking: <0.25 dB
Phase tracking: <4°
Insertion loss: ≤8.5 dB (6 dB, nominal)
Power rating: 1 W
Impedance: 50 Ω
VSWR:
DC to 8 GHz ..................................≤1.25
Equivalent output VSWR:
DC to 8 GHz ..................................≤1.25
Connectors: 3.5 mm (f)
Low frequency
power combiner
Mini Circuits ZFSC-2-5-S+ Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
Frequency range: 10 MHz to 1.5 GHz
Isolation:
10 MHz to 100 MHz ......................≥15 dB
100 MHz to 750 MHz ....................≥20 dB
750 MHz to 1.5 GHz......................≥18 dB
Insertion loss:
10 MHz to 100 MHz ......................≤3.6 dB
100 MHz to 750 MHz ....................≤4.0 dB
750 MHz to 1.5 GHz......................≤4.5 dB
Connectors: SMA (f)
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

NI PXIe-5693 Calibration Procedure |© National Instruments |9
High frequency
power combiner
Agilent 87302C Test system characterization
Verifications:
• In-band third order intercept
• Out-of-band third order
intercept
Frequency range: 500 MHz to 8 GHz
Isolation:
500 MHz to 8 GHz ........................≥19 dB
Insertion loss:
500 MHz to 8 GHz ........................≤4.5 dB
Connectors: 3.5 mm (f)
Torque wrench — — Refer to Test Conditions for torque wrench
specifications.
Table 1. Recommended Equipment for NI 5693 Calibration (Continued)
Equipment Recommended Models Where Used Minimum Requirements

10 |ni.com |NI PXIe-5693 Calibration Procedure
Test Conditions
The following setup and environmental conditions are required to ensure the NI 5693 meets
published specifications.
• Keep cabling as short as possible. Long cables and wires act as antennas, picking up extra
noise that can affect measurements.
• Verify that all connections, including front panel connections and screws, are secure.
• Maintain an ambient temperature of 23 °C ±5 °C.
• Keep the relative humidity between 10% and 90%, noncondensing.
• Ensure that the PXI Express chassis fan speed is set to HIGH, that the fan filters, if present,
are clean, and that the empty slots contain filler panels. For more information about
maintaining adequate air circulation in your PXI/PXI Express chassis, refer to the Maintain
Forced-Air Cooling Note to Users document available at ni.com/manuals.
• Allow a warm-up time of at least 30 minutes after the chassis is powered on and NI-RFSA
is loaded and recognizes the NI 5693. The warm-up time ensures that the NI 5693 and test
instrumentation are at a stable operating temperature.
• In each verification procedure, insert a delay between configuring all devices and acquiring
the measurement. This delay may need to be adjusted depending on the instruments used
but should always be at least 1,000 ms for the first iteration and 100 ms for each other
iteration.
• Use an appropriate torque wrench or torque screwdriver and SMA driver bit to tighten all
module RF connectors (SMA or 3.5 mm). NI recommends use of 1 N · m (9 lb · in.).
• Lock all test equipment to the REF OUT signal on the back of the PXI Express chassis.
Refer to the NI 5667 Timing Configurations topic in the NI RF Vector Signal Analyzers
Help for more information about configuring clocking sources.
Initial Setup
Refer to the NI 5693 RF Preselector Module Getting Started Guide for information about how
to install the software and hardware and how to configure the NI 5693 in Measurement &
Automation Explorer (MAX).
Characterizing the Test System
You use the measured response of the test system during verification tests.
The power splitter and attenuation response is measured at the RF input frequencies used in the
verification tests.
Caution The connectors on the device under test (DUT) and test equipment are
fragile. Carefully perform the steps in these procedures to prevent damaging any
DUTs or test equipment.

NI PXIe-5693 Calibration Procedure |© National Instruments |11
Designating the Power Splitter Reference Output
Designate one of the two outputs of the power splitter as the reference output. Consistently use
the same output as the reference output throughout the characterization and verification
procedures.
Zeroing and Calibrating the Power Sensor
1. Connect channel A of the power meter to power sensor A.
2. Connect channel B of the power meter to power sensor B.
3. Zero and calibrate the power sensors using the built-in functions in the power meter.
Characterizing the RF Source 1 Power (Direct)
Note Zero and calibrate the power sensor using the procedure in the Zeroing and
Calibrating the Power Sensor section prior to starting this procedure.
1. Connect the RF source 1 output directly to the power sensor B input.
2. Connect power sensor B to channel B of the power meter. Figure 1 shows the completed
equipment setup.
Figure 1. RF Source 1 Power (Direct) Characterization Equipment Setup
1 Power Meter 2 Power Sensor B 3 RF Source 1
3
1
2

12 |ni.com |NI PXIe-5693 Calibration Procedure
3. Set the RF source 1 frequency according to the first row in Table 2.
4. Set the RF source 1 power to 0 dBm.
5. Measure the channel B power using the appropriate calibration factor for the power sensor
frequency. This value is the RF Source 1 Power (Direct)B.
6. Repeat steps 3 through 5 for all remaining frequencies described by Table 2.
7. Repeat steps 1 through 6 using power sensor A. This measured power is the
RF Source 1 Power (Direct)A.
Table 2. RF Source Power (Direct) Characterization Frequencies
Start Frequency Stop Frequency Step Size
10 MHz 100 MHz 10 MHz
100 MHz 187.5 MHz 87.5 MHz
190 MHz 199 MHz 9 MHz
200 MHz 612.5 MHz 100 MHz
700 MHz 3.6 GHz 100 MHz
3.6 GHz 7 GHz 200 MHz

NI PXIe-5693 Calibration Procedure |© National Instruments |13
Characterizing the RF Source 2 Power (Direct)
Note Zero and calibrate the power sensor using the procedure in the Zeroing and
Calibrating the Power Sensor section prior to starting this procedure.
1. Connect the RF source 2 output directly to the power sensor B input.
2. Connect power sensor B to channel B of the power meter. Figure 2 shows the completed
equipment setup.
Figure 2. RF Source 2 Power (Direct) Characterization Equipment Setup
3. Set the RF source 2 frequency according to the first row in Table 2.
4. Set the RF source 2 power to 0 dBm.
5. Measure the channel B power using the appropriate calibration factor for the power sensor
frequency. This value is the RF Source 2 Power (Direct).
6. Repeat steps 3 through 5 for all remaining frequencies described by Table 2.
1 Power Meter 2 Power Sensor B 3 RF Source 2
3
1
2

14 |ni.com |NI PXIe-5693 Calibration Procedure
Characterizing the RF Source Power (with Splitter and
Attenuator)
Note Zero and calibrate the power sensor and define the power splitter reference
output using the procedures in the Designating the Power Splitter Reference Output
and Zeroing and Calibrating the Power Sensor sections prior to starting this
procedure.
1. Connect the RF source 1 output to the power splitter input using the SMA (m)-to-SMA (m)
cable.
2. Connect power sensor A to the reference output of the power splitter.
3. Connect power sensor B to the other output of the power splitter using the
SMA (f)-to-SMA (m) semi-rigid cable and the 6 dB attenuator. Figure 3 shows the
completed equipment setup.
Figure 3. RF Source Power (through Splitter and Attenuator)
Characterization Equipment Setup
1 RF Source 1
2 SMA (m)-to-SMA (m) Cable
3 Power Splitter
4 Power Sensor A
5 6 dB Attenuator
6 SMA (f)-to-SMA (m) Semi-Rigid Cable
7 Power Sensor B
8 Power Meter
8
35 6
1
4 7
2

NI PXIe-5693 Calibration Procedure |© National Instruments |15
4. Set the RF source 1 frequency according to the first row in Table 3.
5. Set the RF source 1 power to 0 dBm.
6. Measure the channel A power and the channel B power using the appropriate calibration
factor for the RF source 1 frequency.
7. Calculate the splitter balance and 6 dB attenuator path loss and the RF source through
splitter path loss using the following equations:
Splitter Balance and 6 dB Attenuator Path LossA_OUT = Channel B Power - Channel A Power
RF Source through Splitter Path LossA_OUT = RF Source 1 Power (Direct)A- Channel A Power
8. Repeat steps 4 through 7 for all remaining frequencies described by Table 3.
9. Repeat steps 2 through 8 after swapping the power sensor A and power sensor B
connections.
10. Calculate the splitter balance and 6 dB attenuator path loss, and calculate the RF source
through splitter path loss using the following equations:
Splitter Balance and 6 dB Attenuator Path LossB_OUT = Channel A Power - Channel B Power
RF Source through Splitter Path LossB_OUT = RF Source 1 Power (Direct)B- Channel B Power
Characterizing the RF Source Power (with Combiner,
Splitter, and 20 dB Attenuator)
Note Zero and calibrate the power sensor using the procedure in the Zeroing and
Calibrating the Power Sensor section prior to starting this procedure.
1. Connect the RF source 1 output to connector 1 of the low frequency power combiner using
the SMA (m)-to-SMA (m) cable.
2. Connect the RF source 2 output to connector 2 of the low frequency power combiner using
the SMA (m)-to-SMA (m) cable.
Table 3. RF Source Power (through Splitter and Attenuator)
Characterization Frequencies
Start Frequency Stop Frequency Step Size
10 MHz 100 MHz 10 MHz
100 MHz 187.5 MHz 87.5 MHz
190 MHz 199 MHz 9 MHz
200 MHz 612.5 MHz 100 MHz
700 MHz 3.6 GHz 100 MHz
3.6 GHz 7 GHz 200 MHz

16 |ni.com |NI PXIe-5693 Calibration Procedure
3. Connect the sum connector of the low frequency power combiner to the power splitter input
using the SMA (m)-to-SMA (m) cable.
4. Connect power sensor B to the reference output of the power splitter.
5. Connect power sensor A to the other output of the power splitter using the 20 dB attenuator.
Figure 4 shows the completed equipment setup.
Figure 4. RF Source Power (with Combiner, Splitter, and 20 dB Attenuator)
Characterization Equipment Setup
6. Turn off the RF source 2 output.
1 RF Source 1
2 RF Source 2
3 Power Combiner
4 Power Sensor B
5 Power Splitter
6 20 dB Attenuator
7 Power Sensor A
8 Power Meter
8
1
2
Combiner
3
57
6
4

NI PXIe-5693 Calibration Procedure |© National Instruments |17
7. Set the RF source 1 frequency according to the first row in Table 4.
8. Set the RF source 1 power to 0 dBm.
9. Measure the channel A power and the channel B power using the appropriate calibration
factor for the RF source 1 frequency.
10. Calculate the RF source 1 through splitter and combiner path loss and the sensor/20 dB
attenuator/splitter tracking using the following equations:
RF Source 1 through Splitter and Combiner Path Loss =
RF Source 1 Power (Direct)B- Channel B Power
Sensor/20 dB Attenuator/Splitter Tracking = Channel B Power – Channel A Power
11. Repeat steps 7 through 10 for all remaining frequencies described by Table 4.
Note For frequencies >700 MHz, use the high frequency power combiner in place
of the low frequency power combiner.
12. Turn off RF source 1 output.
13. Turn on RF source 2 output.
14. Set the RF source 2 frequency according to the first row in Table 4.
15. Set the RF source 2 power to 0 dBm.
16. Measure the channel A power and the channel B power using the appropriate calibration
factor for the RF source 2 frequency.
17. Calculate the RF source 2 through splitter and combiner path loss using the following
equation:
RF Source 2 through Splitter and Combiner Path Loss =
RF Source 2 Power (Direct)B- Channel B Power
18. Repeat steps 14 through 17 for all remaining frequencies described by Table 4.
Table 4. RF Source Power (with Combiner, Splitter, and 20 dB Attenuator)
Characterization Frequencies
Start Frequency Stop Frequency Step Size
10 MHz 100 MHz 10 MHz
100 MHz 187.5 MHz 87.5 MHz
190 MHz 199 MHz 9 MHz
200 MHz 612.5 MHz 100 MHz
700 MHz 3.6 GHz 100 MHz
3.6 GHz 7 GHz 200 MHz

18 |ni.com |NI PXIe-5693 Calibration Procedure
Note For frequencies >700 MHz, use the high frequency power combiner in place
of the low frequency power combiner.
Characterizing the Spectrum Analyzer (with Cable and
10 dB Attenuator)
1. Connect one end of the 10 dB attenuator to the RF source 1 output and the other end to the
RF input of the spectrum analyzer using the SMA (m)-to-SMA (m) cable.
2. Connect the RF source 1 10 MHz REF OUT connector to the spectrum analyzer REF IN
connector using the BNC (m)-to-BNC (m) cable. Figure 5 shows the completed equipment
setup.
Figure 5. Spectrum Analyzer (with Cable and 10 dB Attenuator) Characterization
Equipment Setup
3. Configure the spectrum analyzer according to the following settings:
• Reference level: 0 dBm
• Span: 3 kHz
• Resolution bandwidth: 1 kHz
• External reference source: EXT
4. Set the RF source 1 frequency to 4.6 GHz
5. Set the RF source 1 power to 0 dBm.
6. Set the spectrum analyzer center frequency according to step 4.
7. Measure the peak amplitude using the spectrum analyzer.
8. Calculate the cable and 10 dB attenuator loss using the following equation:
Cable and 10 dB Attenuator Loss = RF Source 1 Power (Direct)B- Spectrum Analyzer Reading
9. Repeat steps 3 through 8 for all frequencies between 4.6 GHz and 7.2 GHz, in 200 MHz
steps.
1 RF Source 1
2 10 dB Attenuator
3 SMA (m)-to-SMA (m) Cable
4 Spectrum Analyzer
5 BNC (m)-to-BNC (m) Cable
1
4
3
5
2

NI PXIe-5693 Calibration Procedure |© National Instruments |19
As-Found and As-Left Limits
The as-found limits are the published specifications for the NI 5693. NI uses these limits to
determine whether the NI 5693 meets the device specifications when it is received for
calibration.
The as-left limits are equal to the published NI specifications for the NI 5693, less guard bands
for manufacturing measurement uncertainty, temperature drift, and drift over time. NI uses these
limits to reduce the probability that the instrument will be outside the published specification
limits at the end of the calibration cycle.
Verification
The performance verification procedures assume that adequate traceable uncertainties are
available for the calibration references.
Verifying Noise Figure
1. Connect the noise source output to the spectrum analyzer RF input connector using the
SMA (f)-to-SMA (f) adapter and the SMA (m)-to-SMA (m) cable.
2. Connect the noise source input to the spectrum analyzer noise source supply connector
using the BNC (m)-to-BNC (m) cable. Figure 6 shows the completed equipment setup.
Note This measurement is sensitive to radiated electromagnetic interference (EMI)
from outside sources such as cellular telephones, computers, unshielded cables, and
so on. For best results, locate sources of EMI radiation as far as possible from the
device under test.

20 |ni.com |NI PXIe-5693 Calibration Procedure
Figure 6. Spectrum Analyzer Noise Figure Characterization Equipment Setup
3. Create a new session for the NI 5693.
4. Configure the NI 5693 according to the following settings:
• Reference level: -60 dBm
• Preamp enabled: Enabled
• IF output power level: -10 dBm
5. Configure the spectrum analyzer according to the following settings:
• Span: 0 Hz
• Reference level: -50 dBm
• Resolution bandwidth filter: 10 kHz
• Video bandwidth filter: 30 Hz
• RF attenuation: 0 dB
•Preamp:On
• Trace type: Average
• Detector type: Sample
• Average count: 100
6. Turn off the spectrum analyzer noise source control.
1 Spectrum Analyzer
2 BNC (m)-to-BNC (m) Cable
3 Noise Source
4 SMA (f)-to-SMA (f) Adapter
5 SMA (m)-to-SMA (m) Cable
3
2
4
5
1
NC346B