National Instruments NI PXIe-5653 Manual

CALIBRATION PROCEDURE
NI PXIe-5653
This document contains the verification and adjustment procedures for the National Instruments
PXIe-5653 RF synthesizer (NI 5653). Refer to ni.com/calibration for more information
about calibration solutions.
Contents
Software.................................................................................................................................... 2
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 2
Test Conditions......................................................................................................................... 5
Initial Setup............................................................................................................................... 5
Self-Calibrating the NI 5653 .................................................................................................... 5
As-Found and As-Left Limits................................................................................................... 6
Verification ............................................................................................................................... 6
Verifying 10 MHz Reference Frequency Accuracy ......................................................... 6
Verifying 10 MHz Reference Amplitude Accuracy......................................................... 7
Verifying 100 MHz Reference Frequency Accuracy ....................................................... 7
Verifying 100 MHz Reference Amplitude Accuracy....................................................... 8
Verifying LO1 Frequency Accuracy ................................................................................ 9
Verifying LO1 Amplitude Accuracy ................................................................................ 10
Verifying LO2 Amplitude Accuracy ................................................................................ 10
Verifying LO3 Amplitude Accuracy ................................................................................ 11
Verifying LO1 Phase Noise.............................................................................................. 11
Verifying LO2 Phase Noise.............................................................................................. 12
Verifying LO3 Phase Noise.............................................................................................. 14
Adjustment................................................................................................................................ 15
Adjusting Reference Accuracy ......................................................................................... 15
Adjusting YIG Frequency ................................................................................................ 16
Adjusting LO1, LO2, and LO3 Output Power ................................................................. 17
EEPROM Update ..................................................................................................................... 17
Reverification ........................................................................................................................... 17
Reverifying 10 MHz Reference Amplitude Accuracy ..................................................... 18
Reverifying 100 MHz Reference Amplitude Accuracy ................................................... 18
Reverifying LO1 Amplitude Accuracy ............................................................................ 18
Reverifying LO2 Amplitude Accuracy ............................................................................ 19
Reverifying LO3 Amplitude Accuracy ............................................................................ 19
Reverifying Other Device Performance Specifications.................................................... 20
Worldwide Support and Services ............................................................................................. 20

2|ni.com |NI PXIe-5653 Calibration Procedure
Software
Calibrating the NI 5653 requires you to install one of the following packages on the calibration
system.
• NI-RFSA 2.4 or later
• NI-RFSG 1.7 or later
Note NI-RFSG automatically installs when you install NI-RFSA.
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 (ADE). When you install the
software, you need to install support only for the ADE that you intend to use.
Documentation
You might find the following documents helpful as you perform the calibration procedure:
• NI 5665 RF Vector Signal Analyzer Getting Started Guide
•NI RF Signal Generators Help
•NI PXIe-5665 Specifications
The latest versions of these documents are available on 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-5653 Calibration Procedure |© National Instruments |3
Table 1. Required Equipment Specifications for NI 5653 Calibration
Equipment Recommended Model Where Used Minimum Requirements
Signal source analyzer Rohde & Schwarz (R&S)
FSUP Signal Source Analyzer
Verifying 10 MHz Reference Frequency Accuracy
Verifying 100 MHz Reference Frequency Accuracy
Verifying LO1 Frequency Accuracy
Verifying LO1 Phase Noise
Verifying LO2 Phase Noise
Verifying LO3 Phase Noise
Adjusting Reference Accuracy
Adjusting YIG Frequency Accuracy
Frequency range: 9 MHz to 10 GHz
Frequency accuracy: 1 ppb over the
frequency range, 900 MHz to 9 GHz
recommended
Noise floor: <-152 dBm/Hz
Phase noise measurement using
cross-correlation
Frequency counter marker feature
Spectrum analysis capabilities
Frequency reference Symmetricon 8040C
Rubidium Frequency Standard
Verifying 10 MHz Reference Frequency Accuracy
Verifying 100 MHz Reference Frequency Accuracy
Verifying LO1 Frequency Accuracy
Adjusting Reference Accuracy
Adjusting YIG Frequency Accuracy
Frequency: 10 MHz
Frequency accuracy: 1 * 10-9
(typically ±5E-11)

4|ni.com |NI PXIe-5653 Calibration Procedure
Power meter Anritsu ML2438A with a
MA247xD Series Diode
Sensor
Verifying 10 MHz Reference Amplitude Accuracy
Verifying 100 MHz Reference Amplitude Accuracy
Verifying LO1 Amplitude Accuracy
Verifying LO2 Amplitude Accuracy
Verifying LO3 Amplitude Accuracy
Adjusting LO1, LO2, and LO3 Output Power
Range: 0 dBm to +20 dBm
Frequency range: 9 MHz to 8.3 GHz
Accuracy: 0.5%
Linearity: Up to +15 dBm (MA2475 only)
SMA (m)-to-SMA (m)
Cable
—Verifying 10 MHz Reference Frequency Accuracy
Verifying 100 MHz Reference Frequency Accuracy
Verifying LO1 Frequency Accuracy
Verifying LO1 Phase Noise
Verifying LO2 Phase Noise
Verifying LO3 Phase Noise
Adjusting Reference Accuracy
Adjusting YIG Frequency Accuracy
Adjusting LO1, LO2, and LO3 Output Power
Length: 36 in.
Table 1. Required Equipment Specifications for NI 5653 Calibration (Continued)
Equipment Recommended Model Where Used Minimum Requirements

NI PXIe-5653 Calibration Procedure |© National Instruments |5
Test Conditions
Follow these guidelines to optimize the connections and the environment during calibration:
• Keep cabling as short as possible. Long cables 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 relative humidity between 10% and 90%, noncondensing.
• Allow a warm-up time of at least 30 minutes after the chassis is powered on. The warm-up
time ensures that the NI 5653 is 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, 1,000 ms when the power level
changes, and 100 ms for each other iteration.
• Perform self-calibration on the NI 5653.
• Plug the PXI/PXI Express chassis and the calibrator into the same power strip to avoid
ground loops.
• Use a torque wrench appropriate for the type of RF connector that you are using.
NI recommends a 0.565 N · m (5 lb · in.) wrench for SMA connectors and an 0.90 N · m
(8 lb · in.) wrench for 3.5 mm connectors.
• Connect the frequency reference source to the REF IN connector on the back of the
PXI Express chassis with a standard BNC (m)-to-BNC (m) cable. This connection replaces
the connection from the NI 5653 REF OUT (10 MHz) connector to the PXI Express chassis
REF IN connector, if present.
• Ensure that the PXI/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, refer
to the Maintain Forced-Air Cooling Note to Users document available at ni.com/
manuals.
Initial Setup
Refer to the NI 5665 RF Vector Signal Analyzer Getting Started Guide for information about
how to install the software and hardware and how to configure the device in Measurement and
Automation Explorer (MAX).
Self-Calibrating the NI 5653
Note No signal connections are needed for self-calibration.
You can self-calibrate the NI 5653 using the self-calibration features provided with NI-RFSG.

6|ni.com |NI PXIe-5653 Calibration Procedure
As-Found and As-Left Limits
The as-found limits are the published specifications for the NI 5653, found in the NI PXIe-5665
Specifications document. NI uses these limits to determine whether the NI 5653 meets the device
specifications when it is received for calibration.
The as-left limits are equal to the published NI specifications for the NI 5653, less guard bands
for measurement uncertainty, temperature drift, and drift over time. NI uses these limits to
determine whether the NI 5653 meets the device specifications over its calibration interval.
Verification
The performance verification procedures assume that adequate traceable uncertainties are
available for the calibration references.
Verifying 10 MHz Reference Frequency Accuracy
This verification ensures that the internal oven-controlled crystal oscillator (OCXO) is adjusted
for correct frequency accuracy. Complete the following procedure to determine the as-found
status of the NI 5653.
1. Connect the NI 5653 REF OUT 10 MHz front panel connector to the signal source analyzer
RF IN front panel connector.
2. Connect the signal source analyzer REF IN rear panel connector to the rubidium frequency
reference output connector.
3. Create a new device session for the NI 5653.
4. Set the RF frequency to 4 GHz and commit the settings to hardware.
5. Check the signal generation status and verify that there are no reported errors or warnings.
6. Configure the signal source analyzer as follows:
• Center frequency: 110 MHz
• Reference level: -50 dBm
• Frequency span: 1 kHz
• Reference clock source: External
• Frequency counter mode: 0.1 Hz resolution
7. Use the signal source analyzer frequency counter to measure the frequency of the peak at
approximately 110 MHz.

NI PXIe-5653 Calibration Procedure |© National Instruments |7
8. Calculate the deviation using the following formula:
9. Ensure that the result in step 8 is less than the result of the following formula:
Initial Accuracy + Aging + Temperature Stability
where
Initial Accuracy =
Aging =
Temperature Stability =
10. Close the device session.
Verifying 10 MHz Reference Amplitude Accuracy
This verification ensures that the internal 10 MHz reference circuitry is adjusted for correct
amplitude accuracy. Complete the following procedure to determine the as-found status of the
NI 5653.
1. Connect the NI 5653 REF OUT 10 MHz front panel connector to the power meter.
2. Connect the signal source analyzer REF IN rear panel connector to any rubidium frequency
reference output connector.
3. Create a new device session for the NI 5653.
4. Set the RF frequency to 4 GHz and commit the settings to hardware.
5. Check the signal generation status and verify that there are no reported errors or warnings.
6. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 REF OUT 10 MHz front panel connector power. Ensure that the power is between
1 dBm and 10 dBm.
7. Close the device session.
Verifying 100 MHz Reference Frequency Accuracy
This verification ensures that the internal 100 MHz reference circuitry is adjusted for correct
frequency accuracy. Complete the following procedure to determine the as-found status of the
NI 5653.
1. Connect the NI 5653 REF OUT 100 MHz front panel connector to the signal source
analyzer RF IN front panel connector.
2. Connect the signal source analyzer REF IN rear panel connector to any rubidium frequency
reference output connector.
3. Create a new device session for the NI 5653.
4. Set the RF frequency to 4 GHz and commit the settings to hardware.
5. Check the signal generation status and verify that there are no reported errors or warnings.
Δffmeasured MHz()110MHz–
110MHz
-------------------------------------------------------------------
=
50 10 9–
×
100 10 9–
×
Year
--------------------------NumberofYearsSinceLastAdjustment×
10 10 9–
×

8|ni.com |NI PXIe-5653 Calibration Procedure
6. Configure the signal source analyzer as follows:
• Center frequency: 100 MHz
• Reference level: 10 dBm
• Frequency span: 250 kHz
• Reference clock source: External
• Frequency counter mode: 0.1 Hz resolution
7. Use the signal source analyzer frequency counter to measure the frequency of the peak at
approximately 110 MHz.
8. Calculate the deviation using the following formula:
9. Ensure that the result in step 8 is less than the result of the following formula:
Initial Accuracy + Aging + Temperature Stability
Where:
Initial Accuracy =
Aging =
Temperature Stability =
10. Close the device session.
Verifying 100 MHz Reference Amplitude Accuracy
This verification ensures that the 100 MHz reference circuitry is adjusted for correct amplitude
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 REF OUT 100 MHz front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 REF OUT 100 MHz front panel connector power. Ensure that the power is
between 1 dBm and 10 dBm.
6. Close the device session.
Δffmeasured MHz()100MHz–
100MHz
-------------------------------------------------------------------
=
50 10 9–
×
100 10 9–
×
Year
--------------------------NumberofYearsSinceLastAdjustment×
10 10 9–
×

NI PXIe-5653 Calibration Procedure |© National Instruments |9
Verifying LO1 Frequency Accuracy
This verification ensures that the internal local oscillator (LO) circuitry is adjusted for correct
frequency accuracy. Complete the following procedure to determine the as-found status of the
NI 5653.
1. Connect the NI 5653 LO1 front panel connector to the signal source analyzer RF IN front
panel connector.
2. Connect the signal source analyzer REF IN rear panel connector to the rubidium frequency
reference output connector.
3. Create a new device session for the NI 5653.
4. Create a list of test frequencies from 3.2 GHz to 8.3 GHz in 100 MHz increments including
endpoints.
5. Set the RF frequency to the first value of the frequency array you created in step 4 and
commit the settings to hardware.
6. Check the signal generation status and verify that there are no reported errors or warnings.
7. Configure the signal source analyzer as follows:
• Center frequency: Frequency from the list in step 4
• Reference level: 20 dBm
• Frequency span: 1 kHz
• Reference clock source: External
8. Measure the frequency of the peak that is returned by the signal source analyzer at
approximately the corresponding point in the frequency array you created in step 4.
9. Use the following formula to calculate the deviation:
10. Repeat steps 5 through 9 for each subsequent point in the frequency array created in step 4.
11. Ensure that the results in step 8 are less than the result of the following formula:
Initial Accuracy + Aging + Temperature Stability
Where
Initial Accuracy =
Aging =
Temperature Stability =
12. Close the device session.
Δffmeasured MHz()fectedexp MHz()–
fectedexp MHz()
------------------------------------------------------------------------------------
=
50 10 9–
×
100 10 9–
×
Year
--------------------------NumberofYearsSinceLastAdjustment×
10 10 9–
×

10 |ni.com |NI PXIe-5653 Calibration Procedure
Verifying LO1 Amplitude Accuracy
This verification ensures that the internal LO1 circuitry is adjusted for correct amplitude
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO1 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Create a list of test frequencies from 3.2 GHz to 8.3 GHz in 100 MHz increments, including
endpoints.
4. Calculate the expected output power, PExpected, for each frequency using the following
formulas.
For all frequencies from 3.2 GHz to 8.2 GHz:
For the frequency 8.3 GHz:
PExpected = 6.5 dBm
5. Set the RF frequency to the first value of the frequency array you created in step 3 and
commit the settings to hardware.
6. Check the signal generation status and verify that there are no reported errors or warnings.
7. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 LO1 front panel connector power.
8. Calculate the power deviation, PDeviation, using the following formula:
9. Repeat steps 5 through 8 for each point in the frequency array you created in step 3.
10. Verify that the power deviation results calculated in step 9 for each point are within ±2.5 dB
for LO1.
11. Close the device session.
Verifying LO2 Amplitude Accuracy
This verification ensures that the internal LO2 circuitry is adjusted for correct amplitude
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO2 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the LO2
output power.
6. Ensure that the output power is between 6.5 dBm and 13 dBm.
7. Close the device session.
PExpected 10.5 3 frequency GHz()3.2GHz–
5.0GHz
---------------------------------------------------------------------
dBm()–=
PDeviation dB() PMeasured dBm()PExpected dBm()–=

NI PXIe-5653 Calibration Procedure |© National Instruments |11
Verifying LO3 Amplitude Accuracy
This verification ensures that the internal LO3 circuitry is adjusted for correct amplitude
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO3 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the LO3
output power.
6. Ensure that the output power is between 7 dBm and 13 dBm.
7. Close the device session.
Verifying LO1 Phase Noise
This verification ensures that the internal LO1 circuitry is adjusted for correct phase noise
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO1 front panel connector to the signal source analyzer RF IN front
panel connector.
2. Create a new device session for the NI 5653.
3. Configure the signal source analyzer as follows:
• Phase noise measurement using cross-correlation PLLs and internal generators
• Automatic DUT detection
• Spur suppression enabled
• Fast Fourier transform (FFT) mode with Blackman-Harris window
• Measurement span from 100 Hz to 10 MHz (offset frequencies)
4. Use the signal source analyzer to perform a manual frequency sweep at the settings shown
in Table 2.
Table 2. LO1 Manual Sweep Settings
Carrier Frequency Offset Resolution Bandwidth Cross Correlation
100 Hz to 300 Hz 10 Hz 100
300 Hz to 1 kHz 30 Hz 1,000
1 kHz to 3 kHz 100 Hz 10,000
3 kHz to 10 kHz 300 Hz 10,000
10 kHz to 30 kHz 1 kHz 10,000
30 kHz to 100 kHz 1 kHz 5,000
100 kHz to 300 kHz 3 kHz 1,000

12 |ni.com |NI PXIe-5653 Calibration Procedure
5. Set the RF frequency to 5.4125 GHz and commit the settings to hardware.
6. If your signal source analyzer does not automatically center for phase noise measurements,
manually set the signal source analyzer center frequency to 5.4125 GHz.
7. Check the signal generation status and verify that there are no reported errors or warnings.
8. Use the signal source analyzer to measure the phase noise. Record the measurements.
9. Set the RF frequency to 7.8125 GHz and commit the settings to hardware.
10. If your signal source analyzer does not automatically center for phase noise measurements,
manually set the signal source analyzer center frequency to 7.8125 GHz.
11. Repeat steps 7 through 8 using the new frequency and record the measurements.
12. Ensure that the recorded measurements are within the limits set in Table 3.
Verifying LO2 Phase Noise
This verification ensures that the internal LO2 circuitry is adjusted for correct phase noise
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO2 front panel connector to the signal source analyzer RF IN front
panel connector.
2. Create a new device session for the NI 5653.
3. Configure the signal source analyzer as follows:
• Phase noise measurement using cross-correlation PLLs and internal generators
• Automatic DUT detection
• Spur suppression enabled
300 kHz to 1 MHz 10 kHz 1,000
1 MHz to 3 MHz 30 kHz 1,000
3 MHz to 10 MHz 100 kHz 1,000
Table 3. LO1 Phase Noise Density (dBc/Hz)
Offset LO1 at 5.4125 GHz LO1 at 7.8125 GHz
100 Hz <-89 <-86
1 kHz <-118 <-115
10 kHz <-128 <-127
100 kHz <-125 <-125
1 MHz <-141 <-141
5 MHz <-155 <-155
Table 2. LO1 Manual Sweep Settings (Continued)
Carrier Frequency Offset Resolution Bandwidth Cross Correlation

NI PXIe-5653 Calibration Procedure |© National Instruments |13
• Fast fourier transform (FFT) mode with Blackman-Harris window
• Measurement span from 100 Hz to 10 MHz (offset frequencies)
4. Use the signal source analyzer to perform a manual frequency sweep at the settings in Table 4.
5. Set the RF frequency to 4 GHz and commit the settings to hardware.
6. If your signal source analyzer does not automatically center for phase noise measurements,
manually set the signal source analyzer center frequency to 4 GHz.
7. Check the signal generation status and verify that there are no reported errors or warnings.
8. Use the signal source analyzer to measure the phase noise. Record the results.
9. Close the device session.
10. Ensure that the recorded measurements are within the limits set in Table 5.
Table 4. LO2 Manual Sweep Settings
Carrier Frequency Offset Resolution Bandwidth Cross Correlation
100 Hz to 300 Hz 10 Hz 100
300 Hz to 1 kHz 30 Hz 1,000
1 kHz to 3 kHz 100 Hz 10,000
3 kHz to 10 kHz 300 Hz 10,000
10 kHz to 30 kHz 1 kHz 10,000
30 kHz to 100 kHz 1 kHz 5,000
100 kHz to 300 kHz 3 kHz 1,000
300 kHz to 1 MHz 10 kHz 1,000
1 MHz to 3 MHz 30 kHz 1,000
3 MHz to 10 MHz 100 kHz 1,000
Table 5. LO2 Phase Noise Density (dBc/Hz)
Offset LO2
100 Hz <-92
1 kHz <-121
10 kHz <-134
100 kHz <-134
1 MHz <-143
5 MHz <-155

14 |ni.com |NI PXIe-5653 Calibration Procedure
Verifying LO3 Phase Noise
This verification ensures that the internal LO3 circuitry is adjusted for correct phase noise
accuracy. Complete the following procedure to determine the as-found status of the NI 5653.
1. Connect the NI 5653 LO2 front panel connector to the signal source analyzer RF IN front
panel connector.
2. Create a new device session for the NI 5653.
3. Configure the signal source analyzer as follows:
• Phase noise measurement using cross-correlation PLLs and internal generators
• Automatic DUT detection
• Spur suppression enabled
• Fast Fourier transform (FFT) mode with Blackman-Harris window
• Measurement span from 100 Hz to 10 MHz (offset frequencies)
4. Use the signal source analyzer to perform a manual frequency sweep at the settings listed
in Table 6.
5. Set the RF frequency to 4 GHz and commit the settings to hardware.
6. If your signal source analyzer does not automatically center for phase noise measurements,
manually set the signal source analyzer center frequency to 800 MHz.
7. Check the signal generation status and verify that there are no reported errors or warnings.
8. Use the signal source analyzer to measure the phase noise. Record the results.
9. Close the device session.
Table 6. LO3 Phase Noise Frequency Sweep Signal Source Analyzer Settings
Carrier Frequency Offset Resolution Bandwidth Cross Correlation
100 Hz to 300 Hz 10 Hz 100
300 Hz to 1 kHz 30 Hz 1,000
1 kHz to 3 kHz 100 Hz 10,000
3 kHz to 10 kHz 300 Hz 10,000
10 kHz to 30 kHz 1 kHz 10,000
30 kHz to 100 kHz 1 kHz 5,000
100 kHz to 300 kHz 3 kHz 1,000
300 kHz to 1 MHz 10 kHz 1,000
1 MHz to 3 MHz 30 kHz 1,000
3 MHz to 10 MHz 100 kHz 1,000

NI PXIe-5653 Calibration Procedure |© National Instruments |15
10. Ensure that the recorded measurements are within the limits set in Table 7.
Adjustment
Completing the adjustment procedure automatically updates the calibration date and
temperature stored in the NI 5653 EEPROM. The calibration date also updates when you call
the niRFSG Initialize External Calibration and the niRFSG Close External Calibration VIs.
Adjusting Reference Accuracy
Complete the following procedure to adjust the NI 5653 frequency accuracy performance using
a signal source analyzer. This adjustment yields a more accurately tuned VCO frequency.
1. Connect the NI 5653 REF OUT 10 MHz front panel connector to the signal source analyzer
RF IN front panel connector.
2. Connect the signal source analyzer REF IN rear panel connector to the rubidium frequency
reference output connector.
3. Configure the signal source analyzer as follows:
• Center frequency: 10 MHz
• Reference level: 10 dBm
• Frequency span: 600 Hz
• Reference clock source: External
4. Create a new external calibration session using the appropriate password.
Note The default password for password-protected operations is NI.
5. Create a new Reference Clock calibration session.
Table 7. LO3 Phase Noise Density (dBc/Hz)
Offset LO3
100 Hz <-104
1 kHz <-135
10 kHz <-148
100 kHz <-149
1 MHz <-158
5 MHz <-160

16 |ni.com |NI PXIe-5653 Calibration Procedure
6. Use the signal source analyzer to measure the peak power and frequency at the peak with
the following parameter settings:
• Set frequency reference level: Spectrum Analyzer Ref Level value returned by
NI-RFSG
• Set center frequency: Spectrum Analyzer Center Frequency value returned by
NI-RFSG
• Frequency counter mode: 0.1 Hz resolution
• Measure power level: maximum peak power as measured
7. Adjust the NI 5653 Reference Clock using the measurements taken in step 6 for the
Measured Ref Out Frequency Peak and Measured Ref Out Power parameters.
8. Repeat steps 6 and 7 until the Reference Clock Calibration Complete parameter returns
a value of TRUE.
9. Close the external calibration session. Store the results to the EEPROM on the device.
Adjusting YIG Frequency
Complete the following procedure to adjust the NI 5653 YIG coarse frequency performance
using a signal source analyzer.
1. Connect the NI 5653 LO1 front panel connector to the signal source analyzer RF IN front
panel connector.
2. Connect the signal source analyzer REF IN rear panel connector to the rubidium frequency
reference output connector.
3. Configure the signal source analyzer as follows:
• Center frequency: 3 GHz
• Reference level: 20 dBm
• Frequency span: 1 GHz
• Resolution bandwidth: 50 kHz
• Reference clock source: External
4. Create a new external calibration session using the appropriate password.
5. Create a new YIG frequency calibration session.
6. Use the signal source analyzer to measure the peak power and frequency at the peak with
the following parameter settings:
• Set frequency span: Spectrum Analyzer Frequency Span value returned by
NI-RFSG
• Set center frequency: Spectrum Analyzer Center Frequency value returned by
NI-RFSG
• Measure frequency: Frequency at peak power as measured
• Measure power level: Maximum peak power as measured
7. Adjust the YIG frequency using the measurements taken in step 6 for the Measured LO1
Frequency and Measured LO1 Power parameters.

NI PXIe-5653 Calibration Procedure |© National Instruments |17
8. Repeat steps 6 through 7 until the YIG Frequency Calibration Complete parameter
returns a value of TRUE.
9. Close the external calibration session. Store the results to the EEPROM on the device.
Adjusting LO1, LO2, and LO3 Output Power
Complete the following procedure to adjust the NI 5653 LO power performance using a power
meter. This adjustment yields a more accurate output power for the NI 5653 LO front panel
connectors.
1. Connect the NI 5653 LO1 front panel connector to the power meter.
2. Create a new external calibration session using the appropriate password.
3. Create a new LO gain calibration session for LO1.
4. Use the power meter to measure the LO1 output power at the frequency specified by the
Calibration Frequency parameter.
5. Adjust the LO Gain using the power measured in step 4 for the Measured LO Power
parameter.
6. Repeat steps 4 and 5 until the LO Gain Calibration Complete parameter returns a value
of TRUE.
7. Close the external calibration session. Store the results to the EEPROM on the device.
8. Disconnect the NI 5653 LO1 front panel connector from the power meter, and connect the
NI 5653 LO2 front panel connector to the power meter.
9. Repeat steps 2 through 7 for LO2.
10. Disconnect the NI 5653 LO2 front panel connector from the power meter, and connect the
NI 5653 LO3 front panel connector to the power meter.
11. Repeat steps 2 through 7 for LO3.
EEPROM Update
When an adjustment procedure is completed, the NI 5653 internal calibration memory, stored in
the EEPROM, is immediately updated.
If you do not want to perform an adjustment, you can update the calibration date and onboard
calibration temperature without making any adjustments by performing an external calibration
in software.
Reverification
Complete the following sections to determine the as-left status of the device.
Note If any test fails reverification after performing an adjustment, verify that you
have met the Test Conditions before returning your device to NI. Refer to Worldwide
Support and Services for information about support resources or service requests.

18 |ni.com |NI PXIe-5653 Calibration Procedure
Reverifying 10 MHz Reference Amplitude Accuracy
This reverification ensures that the internal 10 MHz reference circuitry is adjusted for correct
amplitude accuracy following adjustment. Complete the following procedure to determine the
as-left status of the NI 5653.
1. Connect the NI 5653 REF OUT 10 MHz front panel connector to the power meter.
2. Connect the signal source analyzer REF IN rear panel connector to any rubidium frequency
reference output connector.
3. Create a new device session for the NI 5653.
4. Set the RF frequency to 4 GHz and commit the settings to hardware.
5. Check the signal generation status and verify that there are no reported errors or warnings.
6. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 REF OUT 10 MHz front panel connector power. Ensure that the power is between
4 dBm and 7.5 dBm.
7. Close the device session.
Reverifying 100 MHz Reference Amplitude Accuracy
This reverification ensures that the 100 MHz reference circuitry is adjusted for correct amplitude
accuracy following adjustment. Complete the following procedure to determine the as-left status
of the NI 5653.
1. Connect the NI 5653 REF OUT 100 MHz front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 REF OUT 100 MHz front panel connector power. Ensure that the power is
between 4 dBm and 7.5 dBm.
6. Close the device session.
Reverifying LO1 Amplitude Accuracy
This reverification ensures that the internal LO1 circuitry is adjusted for correct amplitude
accuracy following adjustment. Complete the following procedure to determine the as-left status
of the NI 5653.
1. Connect the NI 5653 LO1 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Create a list of test frequencies from 3.2 GHz to 8.3 GHz in 100 MHz increments, including
endpoints.

NI PXIe-5653 Calibration Procedure |© National Instruments |19
4. Calculate the expected output power, PExpected, for each frequency using the following
formulas.
For all frequencies from 3.2 GHz to 8.2 GHz:
For the frequency 8.3 GHz:
PExpected = 6.5 dBm
5. Set the RF frequency to the first value of the frequency array you created in step 3 and
commit the settings to hardware.
6. Check the signal generation status and verify that there are no reported errors or warnings.
7. After correcting for the measurement frequency, use the power meter to measure the
NI 5653 LO1 front panel connector power.
8. Calculate the power deviation, PDeviation, using the following formula:
9. Repeat steps 5 through 8 for each point in the frequency array you created in step 3.
10. Verify that the power deviation results calculated in step 9 for each point are within ±1.0 dB
for LO1.
11. Close the device session.
Reverifying LO2 Amplitude Accuracy
This reverification ensures that the internal LO2 circuitry is adjusted for correct amplitude
accuracy following adjustment. Complete the following procedure to determine the as-left status
of the NI 5653.
1. Connect the NI 5653 LO2 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the LO2
output power.
6. Ensure that the output power is between 8.25 dBm and 9.75 dBm.
7. Close the device session.
Reverifying LO3 Amplitude Accuracy
This reverification ensures that the internal LO3 circuitry is adjusted for correct amplitude
accuracy following adjustment. Complete the following procedure to determine the as-left status
of the NI 5653.
1. Connect the NI 5653 LO3 front panel connector to the power meter.
2. Create a new device session for the NI 5653.
PExpected 10.5 3 frequency GHz()3.2GHz–
5.0GHz
---------------------------------------------------------------------
dBm()–=
PDeviation dB() PMeasured dBm()PExpected dBm()–=

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373369B-01 Dec13
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3. Set the RF frequency to 4 GHz and commit the settings to hardware.
4. Check the signal generation status and verify that there are no reported errors or warnings.
5. After correcting for the measurement frequency, use the power meter to measure the LO3
output power.
6. Ensure that the output power is between 9 dBm and 11 dBm.
7. Close the device session.
Reverifying Other Device Performance Specifications
For all other device performance specifications, repeat the Verification section to determine the
as-left status of the device.
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