National Instruments PXIe-5164 User manual

CALIBRATION PROCEDURE
PXIe-5164
This document contains the verification and adjustment procedures for the PXIe-5164. Refer
to ni.com/calibration for more information about calibration solutions.
Contents
Required Software.....................................................................................................................2
Related Documentation.............................................................................................................2
Test Equipment..........................................................................................................................2
Test Conditions..........................................................................................................................7
Password................................................................................................................................... 8
Calibration Interval................................................................................................................... 8
As-Found and As-Left Limits................................................................................................... 8
Measurement Uncertainty......................................................................................................... 8
Calibration Overview................................................................................................................9
Test System Characterization....................................................................................................9
Zeroing the Power Sensor................................................................................................. 9
Characterizing Power Splitter Amplitude Balance and Loss..........................................10
Verification..............................................................................................................................14
Verifying DC Accuracy...................................................................................................15
Verifying AC Amplitude Accuracy.................................................................................19
Verifying 50 Ω Passband Amplitude Flatness and Bandwidth....................................... 22
Verifying 1 MΩ Passband Amplitude Flatness and Bandwidth......................................30
Verifying Timebase Accuracy.........................................................................................40
Verifying Input Capacitance............................................................................................41
Verifying RMS Noise......................................................................................................42
Adjustment.............................................................................................................................. 43
Adjusting the PXIe-5164................................................................................................ 43
Adjusting 1 MΩ Compensation Attenuator ................................................................... 44
Adjusting 1 MΩ DC Reference ......................................................................................44
Adjusting 50 Ω DC Reference ....................................................................................... 45
Adjusting Timebase.........................................................................................................45
Adjusting 50 Ω Passband Amplitude Flatness and Bandwidth.......................................46
Adjusting 1 MΩ Passband Amplitude Flatness and Bandwidth.....................................48
Reverification..........................................................................................................................51
Updating Verification Date and Time..................................................................................... 51
Worldwide Support and Services............................................................................................ 51

Required Software
Calibrating the PXIe-5164 requires you to install the following software on the calibration
system:
• NI-SCOPE 16.1 or later. PXIe-5164 was first supported in NI-SCOPE 16.1.
• NI LabVIEW Instrument Design Libraries for Reconfigurable Oscilloscopes 16.1 or later.
PXIe-5164 was first supported in NI LabVIEW Instrument Design Libraries for
Reconfigurable Oscilloscopes 16.1.
Note To perform adjustment procedures, you must use NI LabVIEW
Instrument Design Libraries for Reconfigurable Oscilloscopes 16.2 or later.
• Supported application development environment (ADE)—LabVIEW
You can download all required software from ni.com/downloads.
Related Documentation
For additional information, refer to the following documents as you perform the calibration
procedure:
•PXIe-5164 Getting Started Guide
•NI High-Speed Digitizers Help
•NI Reconfigurable Oscilloscopes Help
•PXIe-5164 Specifications
Visit ni.com/manuals for the latest versions of these documents.
Test Equipment
Refer to the following table for a list of necessary equipment and model recommendations for
calibration of the PXIe-5164.
If you do not have the recommended equipment, select a substitute calibration standard using
the specifications listed in the minimum requirements column of the table.
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Table 1. PXIe-5164 Test Equipment
Equipment
Recommended
Model Where Used Minimum Requirements
Oscilloscope
calibrator
Fluke 9500B/600
with Fluke 9530
Active Head
Verifications:
• Timebase
accuracy
• DC accuracy
• Input
capacitance
Adjustment
Sine wave generation:
• Amplitude: 0.9 Vpk-pk into
50 Ω
• Frequency: 11 MHz and
99 MHz
• Frequency accuracy:
±0.25 ppm
Square wave generation:
• Amplitude: 0.5 Vpk-pk to
45 Vpk-pk into 1 MΩ
symmetrical to ground (0 V)
• Frequency: 500 Hz
• Abberations: <2% of peak
for the first 500 ns
DC generation:
• Amplitude: ±2.5 V into
50 Ω, ±200 V into 1 MΩ
• Accuracy:
±(0.025% of output +
25 µV)
Capacitance measurement:
• Range: 15 pF to 25 pF
• Accuracy: ±(2% of reading
± 0.25 pF)
PXIe-5164 Calibration Procedure | © National Instruments | 3

Table 1. PXIe-5164 Test Equipment (Continued)
Equipment
Recommended
Model Where Used Minimum Requirements
DMM NI PXI-4071 Verifications:
• AC amplitude
accuracy
AC voltage measurement:
• Range: 0.125 Vpk-pk to
20 Vpk-pk
• Input impedance: ≥10 MΩ
• Bandwidth: ≥50 kHz
• Accuracy at 50 kHz
– ±(0.07% of reading +
14 µV) for
0.125 Vpk-pk test point
– ±(0.06% of reading +
71 µV) for 0.25 Vpk-pk
to 1.25 Vpk-pk test
points
– ±(0.06% of reading +
707 µV) for 2.5 Vpk-pk
to 12.5 Vpk-pk test
points
– ±(0.12% of reading +
35 mV) for 20.0 Vpk-pk
test point
Function
generator
NI PXI-5402/5406
or Agilent 33220A
Verifications:
• AC amplitude
accuracy
Sine wave generation:
• Amplitude:
– 0.125 Vpk-pk to
2.5 Vpk-pk into 50 Ω
– 0.125 Vpk-pk to
20 Vpk-pk into 1 MΩ
• Frequency: 50 kHz
BNC Tee
(m-f-f)
Pasternack PE9174 Verifications:
• AC amplitude
accuracy
Impedance: 50 Ω
Double
banana plug
to BNC (f)
Pasternack PE9008 Verifications:
• AC amplitude
accuracy
Impedance: 50 Ω
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Table 1. PXIe-5164 Test Equipment (Continued)
Equipment
Recommended
Model Where Used Minimum Requirements
BNC (m)-to-
BNC (m)
cable (x2)
Pasternack PE308 Verifications:
• AC amplitude
accuracy
Length: ≤1 meter
Power sensor Rohde & Schwarz
NRP-Z91
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
Power measurement:
• Frequency range: 50 kHz to
401 MHz
• Power range: -16 dBm to
10 dBm
• VSWR: <1.11
• Absolute accuracy
– <0.048 dB for 50 kHz
to <100 MHz
– <0.063 dB for
100 MHz to 401 MHz
• Relative accuracy at -4 dBm
– <0.022 dB for 50 kHz
to <100 MHz
– <0.022 dB for
100 MHz to 401 MHz
Signal
generator
Rohde & Schwarz
SMA100A
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
Sine wave generation:
• Amplitude: -10 dBm to
16 dBm
• Frequency: 50 kHz to
401 MHz
• Harmonics: <-30 dBc
• Frequency accuracy:
±100.0 ppm
PXIe-5164 Calibration Procedure | © National Instruments | 5

Table 1. PXIe-5164 Test Equipment (Continued)
Equipment
Recommended
Model Where Used Minimum Requirements
Power splitter Aeroflex/Weinschel
1593
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Amplitude: -16 dBm to
16 dBm
• Frequency: 50 kHz to
401 MHz
• VSWR: <1.09
50 Ω BNC
terminator (f)
Fairview
Microwave ST3B-F
Test system
characterization
• Amplitude: 10 dBm
• Frequency: DC to 401 MHz
• VSWR: <1.1
50 Ω BNC
terminator
(m)
Fairview
Microwave ST2B
Verifications:
• RMS noise
• Frequency: DC to 500 MHz
• VSWR: <1.15
SMA (m)-to-
SMA (m)
cable
— Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Frequency: DC to 401 MHz
• VSWR: <1.1
• Length: ≤1 meter
SMA (f)-to-N
(m) adapter
Fairview
Microwave
SM4226
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Frequency range: DC to
401 MHz
• VSWR: <1.05
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Table 1. PXIe-5164 Test Equipment (Continued)
Equipment
Recommended
Model Where Used Minimum Requirements
BNC (f)-to-N
(f) adapter
Fairview
Microwave
SM3526
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Frequency range: DC to
401 MHz
• VSWR: <1.1
• Impedance: 50 Ω
SMA (m)-to-
BNC (m)
adapter (x2)
Fairview
Microwave
SM4716
Test system
characterization
Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Frequency range: DC to
401 MHz
• VSWR: <1.1
• Impedance: 50 Ω
SMA feed-
thru
terminator
Pasternack PE6026 Adjustment
Verifications:
• Passband
amplitude
flatness and
bandwidth
• Amplitude: 10 dBm
• Frequency: 50 kHz to
301 MHz
• VSWR:
– <1.1 at 100 MHz
– <1.25 at 301 MHz
• Impedance: 50 Ω
Test Conditions
The following setup and environmental conditions are required to ensure the PXIe-5164 meets
published specifications:
• Allow a warm-up time of at least 15 minutes after the chassis is powered on. The warm-
up time ensures that the PXIe-5164 is at a stable operating temperature.
• Allow all test instruments a warm-up time of at least the stated amount of time in their
specification document. The warm-up time ensures that the test instruments are at a stable
operating temperature.
PXIe-5164 Calibration Procedure | © National Instruments | 7

• Keep cabling as short as possible. Long cables act as antennas, picking up extra noise that
can affect measurements.
• Verify that all connections to the PXIe-5164, including front panel connections and
screws, are secure.
• Use shielded copper wire for all cable connections to the device. Use twisted-pair wire to
eliminate noise and thermal offsets.
• Maintain an ambient temperature of 23 °C ± 3 °C.
• Keep relative humidity between 10% and 90%, noncondensing.
• Ensure that the PXI 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 cooling,
refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/
manuals.
• Plug the chassis and the instrument standard into the same power strip to avoid ground
loops.
Password
The default password for password-protected operations is NI.
Calibration Interval
Recommended calibration interval 2 years
As-Found and As-Left Limits
The as-found limits are the published specifications for the PXIe-5164. NI uses these limits to
determine whether the PXIe-5164 meets the specifications when it is received for calibration.
Use the as-found limits during initial verification.
The as-left calibration limits are equal to the published NI specifications for the PXIe-5164,
less guard bands for 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. Use the as-left limits when performing
verification after adjustment.
Measurement Uncertainty
Measurement uncertainty was calculated in accordance with the method described in ISO
GUM (Guide to the Expression of Uncertainty in Measurement), for a confidence level of
95%. The expressed uncertainty is based on the recommended measurement methodology,
standards, metrology best practices and environmental conditions of the National Instruments
laboratory. It should be considered as a guideline for the level of measurement uncertainty that
8| ni.com | PXIe-5164 Calibration Procedure

can be achieved using the recommended method. It is not a replacement for the user
uncertainty analysis that takes into consideration the conditions and practices of the individual
user.
Calibration Overview
Install the device and configure it in NI Measurement & Automation Explorer (MAX) before
calibrating.
Calibration includes the following steps:
1. Self-calibration—Adjust the self-calibration constants of the device.
2. Test system characterization—Characterize the amplitude balance of the output ports on
your power splitter and amplitude loss through your power splitter.
The results of this step are used as a correction in the following procedures:
•Verifying 50 Ω Passband Amplitude Flatness and Bandwidth
•Verifying 1 MΩ Passband Amplitude Flatness and Bandwidth
•Adjusting 50 Ω Passband Amplitude Flatness and Bandwidth
•Adjusting 1 MΩ Passband Amplitude Flatness and Bandwidth
3. Verification—Verify the existing operation of the device. This step confirms whether the
device is operating within the published specification prior to adjustment.
4. Adjustment—Perform an external adjustment of the calibration constants of the device.
The adjustment procedure automatically stores the calibration date and temperature in the
nonvolatile memory to allow traceability.
5. Re-verification—Repeat the Verification procedure to ensure that the device is operating
within the published specifications after adjustment.
Test System Characterization
The following procedures characterize the test equipment used during verification.
Caution The connectors on the device under test (DUT) and test equipment are
fragile. Perform the steps in these procedures with great care to prevent damaging
any DUTs or test equipment.
Zeroing the Power Sensor
1. Ensure that the power sensor is not connected to any signals.
2. Zero the power sensor using the built-in function, according to the power sensor
documentation.
PXIe-5164 Calibration Procedure | © National Instruments | 9

Characterizing Power Splitter Amplitude Balance and
Loss
This procedure characterizes the amplitude balance of the two output ports of the power
splitter and amplitude loss through the power splitter over a range of frequencies.
The results of the characterization are later used as a correction in the following procedures:
•Verifying 50 Ω Passband Amplitude Flatness and Bandwidth
•Verifying 1 MΩ Passband Amplitude Flatness and Bandwidth
•Adjusting 50 Ω Passband Amplitude Flatness and Bandwidth
•Adjusting 1 MΩ Passband Amplitude Flatness and Bandwidth
Table 2. Power Splitter Characterization
Config Test Point: Frequency (MHz)
1 0.05
2 1.1
3 6.1
4 10.1
5 30.1
6 45.1
7 60.1
8 75.1
9 90.1
10 100.1
11 120.1
12 150.1
13 170.1
14 190.1
15 200.1
16 210.1
17 230.1
18 245.1
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