PXI-5124 Specifications

Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty. Warranted specifications account for measurement uncertainties, temperature drift, and aging. Warranted specifications are ensured by design, or verified during production and calibration.

Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

  • Typical specifications describe the performance met by a majority of models.
  • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
  • Measured (meas) specifications describe the measured performance of a representative model.

Specifications are Typical unless otherwise noted.

Conditions

Specifications are valid under the following conditions unless otherwise noted.

  • All filter settings
  • All impedance selections
  • Sample clock set to 200 MS/s using onboard clock
  • The PXI-5124 module is warmed up for 15 minutes at ambient temperature.
  • Calibration cycle is maintained.
  • The PXI chassis fan speed is set to HIGH, the foam fan filters are removed if present, and the empty slots contain PXI chassis slot blockers and filler panels. For more information about cooling, refer to the Maintain Forced-Air Cooling Note to Users available at ni.com/manuals.
  • External calibration is performed at 23 °C ± 5 °C
Caution To ensure the specified EMC performance, operate this product only with double-shielded cables (for example, RG-233/U or equivalent) and shielded accessories.
Caution You can impair the protection provided by the PXI-5124 if you use it in a manner not described in this document.

Vertical

Analog Input

Number of channels

Two (simultaneously sampled)

Connectors

BNC

Impedance and Coupling

Input impedance (software-selectable)

50 Ω ± 2.0%

1 MΩ ± 0.75% in parallel with a nominal capacitance of 29 pF

Input coupling (software-selectable)

AC[1]

DC

GND

Voltage Levels

Table 1. Full Scale (FS) Input Range and Programmable Vertical Offset
Range (Vpk-pk) Vertical Offset Range
50 Ω Input 1 MΩ Input
0.2 V ±0.1 V
0.4 V ±0.2 V
1 V ±0.5 V
2 V ±1 V
4 V ±2 V
10 V — ±5 V
20 V (1 MΩ only) — —
Maximum input overload

50 Ω

7 Vrms with |Peaks| ≤10 V

1 MΩ

|Peaks| ≤42 V

Accuracy

Resolution

12 bits

Table 2. DC Accuracy[2], warranted
Range (Vpk-pk) Accuracy
0.2 V and 0.4 V ±(0.65% of input + 1.8 mV)
1 V and 2 V ±(0.65% of input + 2.1 mV)
4 V, 10 V, and 20 V[3] ±(0.65% of input + 10.0 mV)

Programmable vertical offset accuracy[4]

±0.4% of offset setting, warranted

Table 3. DC Drift, Nominal
Range (Vpk-pk) 50 Ω and 1 MΩ
0.2 V, 0.4 V, 1 V, and 2 V ±(0.057% of input + 0.006% of FS + 100 μV) per °C
4 V, 10 V, and 20 V[3] ±(0.057% of input + 0.006% of FS + 900 µV) per °C
AC amplitude accuracy[4]

50 Ω

±0.06 dB (±0.7%) at 50 kHz

1 MΩ

±0.09 dB (±1.0%) at 50 kHz

Crosstalk[5]

≤-85 dB at 10 MHz

Sparkle code rate[6]

Onboard clock

<300 ppt [7]

External clock

200 MHz

<300 ppt [7]

150 MHz

<3 ppt [7]

100 MHz

0

Bandwidth and Transient Response

Table 4. Bandwidth (±3 dB), Warranted[8], [9]
Input Range (Vpk-pk) [8] 50 Ω 1 MΩ
0.2 V 85 MHz 75 MHz
All other input ranges 150 MHz 145 MHz up to 40 °C[10]
Rise/fall time[8]

0.2 Vpk-pk input range

3.3 ns

All other input ranges

2.4 ns

Bandwidth limit filters[11]

Noise filter

20 MHz

2-pole Bessel filter

Anti-alias filter

60 MHz

4-pole elliptical filter

AC coupling cutoff (-3 dB)[12]

12 Hz

Table 5. Passband Flatness[9]
Filter Settings[9] Input Range (Vpk-pk) 50 Ω and 1 MΩ
Filters off 0.2 V

±0.6 dB (DC to 20 MHz)

±1.5 dB (20 MHz to 40 MHz)

All input ranges except 0.2 V

±0.5 dB (DC to 20 MHz)

±1.0 dB (20 MHz to 50 MHz)

±1.7 dB (50 MHz to 100 MHz)

Anti-alias filter on All ranges -1.0 dB to +2.0 dB (DC to 55 MHz)
Figure 1. PXI-5124 Frequency Response (Measured)

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Spectral Characteristics

Table 6. Spurious-Free Dynamic Range with Harmonics (SFDR)[13]
Input Range (Vpk-pk) 50 Ω 1 MΩ
0.2 V 75 dBc 70 dBc
0.4 V 75 dBc 70 dBc
1 V 72 dBc 70 dBc
2 V 72 dBc 70 dBc
4 V 65 dBc 67 dBc
10 V 65 dBc 60 dBc
20 V (1 MΩ only) — 60 dBc
Table 7. Total Harmonic Distortion (THD)[14]
Input Range (Vpk-pk) 50 Ω 1 MΩ
0.2 V -74 dBc -68 dBc
0.4 V -74 dBc -68 dBc
1 V -72 dBc -68 dBc
2 V -72 dBc -67 dBc
4 V -63 dBc -66 dBc
10 V -63 dBc -58 dBc
20 V (1 MΩ only) — -58 dBc

Intermodulation distortion (Vpk-pk)[15]

-75 dBc

Table 8. Signal-to-Noise Ratio (SNR)[16]
Input Range (Vpk-pk) 50 Ω 1 MΩ
Filters Off Anti-alias Filter On Filters Off Anti-alias Filter On
0.2 V 57 dB 56 dB 53 dB 55 dB
0.4 V 58 dB 57 dB 55 dB 57 dB
1 V 58 dB 58 dB 57 dB 57 dB
2 V 58 dB 58 dB 57 dB 57 dB
4 V — — 56 dB 58 dB
Table 9. Signal to Noise and Distortion (SINAD)[17]
Input Range (Vpk-pk) 50 Ω 1 MΩ
Filters Off Anti-alias Filter On Filters Off Anti-alias Filter On
0.2 V 57 dB 56 dB 53 dB 55 dB
0.4 V 58 dB 57 dB 55 dB 57 dB
1 V 58 dB 58 dB 57 dB 57 dB
2 V 58 dB 58 dB 57 dB 57 dB
4 V — — 56 dB 57 dB
Figure 2. PXI-5124 Dynamic Performance, 50 Ω, 1 V Input Range, 262,144-Point FFT, Measured

1378

Table 10. RMS Noise (Noise filter on; 50 Ω terminator connected to input)
Input Range (Vpk-pk) 50 Ω 1 MΩ
0.2 V 94 μVrms (0.047% FS) 104 μVrms (0.052% FS)
0.4 V 188 μVrms (0.047% FS) 192 μVrms (0.048% FS)
1 V 470 μVrms (0.047% FS) 480 μVrms (0.048% FS)
2 V 940 μVrms (0.047% FS) 960 μVrms (0.048% FS)
4 V 1.88 mVrms (0.047% FS) 1.92 mVrms (0.048% FS)
10 V 4.7 mVrms (0.047% FS) 4.8 mVrms (0.048% FS)
20 V (1 MΩ only) — 9.4 mVrms (0.047% FS)
Table 11. RMS Noise (Anti-alias filter on; 50 Ω terminator connected to input)
Input Range (Vpk-pk) 50 Ω 1 MΩ
0.2 V 112 μVrms (0.056% FS) 130 μVrms (0.065% FS)
0.4 V 200 μVrms (0.05% FS) 216 μVrms (0.054% FS)
1 V 500 μVrms (0.05% FS) 510 μVrms (0.051% FS)
2 V 1.0 mVrms (0.05% FS) 1.02 mVrms (0.051% FS)
4 V 2.04 mVrms (0.051% FS) 2.16 mVrms (0.054% FS)
10 V 5.1 mVrms (0.051% FS) 5.2 mVrms (0.052% FS)
20 V (1 MΩ only) — 10.2 mVrms (0.051% FS)
Table 12. RMS Noise (Filters off; 50 Ω terminator connected to input)
Input Range (Vpk-pk) 50 Ω 1 MΩ
0.2 V 114 μVrms (0.057% FS) 164 μVrms (0.082% FS)
0.4 V 204 μVrms (0.051% FS) 264 μVrms (0.066% FS)
1 V 510 μVrms (0.051% FS) 550 μVrms (0.055% FS)
2 V 1.02 mVrms (0.051% FS) 1.08 mVrms (0.054% FS)
4 V 2.08 mVrms (0.052% FS) 2.6 mVrms (0.065% FS)
10 V 5.2 mVrms (0.052% FS) 5.5 mVrms (0.055% FS)
20 V (1 MΩ only) — 10.6 mVrms (0.053% FS)
Figure 3. PXI-5124 Spectral Noise Density on 0.2 V Input Range, Noise Filter Enabled, 1 MΩ Input Impedance, Nominal

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Figure 4. PXI-5124 Spectral Noise Density on 0.2 V Input Range, Full Bandwidth, 50 Ω Input Impedance, Nominal

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Horizontal

Sample Clock

Sources

Internal

Onboard clock (internal VCXO)[18]

External

CLK IN (front panel SMB connector)

PXI Star Trigger (backplane connector)

Onboard Clock (Internal VCXO)

Sample rate range

Real-time sampling (single shot)

3.052 kS/s to 200 MS/s[19]

Random interleaved sampling (RIS)

400 MS/s to 4 GS/s in multiples of 200 MS/s

Phase noise density[20]

<-100 dBc/Hz at 100 Hz

<-120 dBc/Hz at 1 kHz

<-130 dBc/Hz at 10 kHz

Sample clock jitter[21]

≤1 psrms (100 Hz to 100 kHz)

≤2 psrms (100 Hz to 1 MHz)

Timebase frequency

200 MHz

Timebase accuracy

Not phase-locked to Reference clock

±25 ppm, Warranted

Phase-locked to Reference clock

Equal to the Reference clock accuracy

Sample clock delay range

±1 Sample clock period

Sample clock delay/adjustment resolution

≤5 ps

External Sample Clock

Sources

CLK IN (front panel SMB connector)

PXI Star Trigger (backplane connector)

Frequency range[22]

CLK IN

50 MHz to 210 MHz

PXI Star Trigger

50 MHz to 80 MHz

Duty cycle tolerance

45% to 55%

Exported Reference clock destinations

CLK OUT (front panel SMB connector)

PFI <0..1> (front panel 9-pinmini-circular DIN connector)

PXI_Trig <0..7> (backplane connector)

Sample Clock Exporting

Table 13. Exported Sample Clock Destinations
Destination Maximum Frequency
CLK OUT (front panel SMB connector) 210 MHz
PXI_Trig <0..6>[23] 20 MHz
PFI <0..1> (front panel 9-pinmini-circular DIN connector)[23] 25 MHz

Phase-Locked Loop (PLL) Reference Clock

Sources

PXI_CLK10 (backplane connector)

CLK IN (front panel SMB connector)

Frequency range[24]

5 MHz to 20 MHz in 1 MHz increments

Duty cycle tolerance

45% to 55%

Exported reference clock destinations

CLK OUT (front panel SMB connector)

PFI <0..1> (front panel 9-pinmini-circular DIN connector)

PXI_Trig <0..7> (backplane connector)

CLK IN (Sample Clock and Reference Clock Input)

Connector

SMB jack

Input voltage range

Sine wave (Vpk-pk)

0.65 V to 2.8 V (0 dBm to 13 dBm)

Square wave (Vpk-pk)

0.2 V to 2.8 V

Maximum input overload

7 Vrms with |Peaks| ≤10 V

Impedance

50 Ω

Coupling

AC

CLK OUT (Sample Clock and Reference Clock Output)

Connector

SMB jack

Output impedance

50 Ω

Logic type

3.3 V CMOS

Maximum drive current

±48 mA

Trigger

Reference (Stop) Trigger

Note Refer to the following sections and the NI High-Speed Digitizers Help for more information about what sources are available for each trigger type.

Trigger types

Edge

Window

Hysteresis

Video

Digital

Immediate

Software

Trigger sources

CH 0

CH 1

TRIG

PXI_Trig <0..6>

PFI <0..1>

PXI Star Trigger

Software

Time resolution
Time-to-digital conversion circuit (TDC) on

Onboard clock

50 ps

External clock

N/A

TDC off

Onboard clock

5 ns

External clock

External clock period

Minimum rearm time[25]

TDC on

10 µs

TDC off

2 µs

Holdoff
Onboard clock

TDC on

10 µs to 85.899 s

TDC off

2 µs to 85.899 s

External clock (TDC off)

200 × External clock period to (232 - 1) × External clock period

Analog Trigger

Trigger types

Edge

Window

Hysteresis

Sources

CH 0 (front panel BNC connector)

CH 1 (front panel BNC connector)

TRIG (front panel BNC connector)

Trigger level range

CH 0, CH 1

100% of FS

TRIG (External Trigger)

±5 V

Trigger level resolution

10 bits (1 in 1,024)

Edge trigger sensitivity, warranted

CH 0, CH 1

3.5% FS up to 50 MHz

Increases to 10% FS at 150 MHz

TRIG (external trigger), Vpk-pk

0.25 V up to 100 MHz

Increases to 1 V at 200 MHz

Level accuracy

CH 0, CH 1

±4.7% FS up to 10 MHz

TRIG (External Trigger)

±0.35 V up to 10 MHz

Trigger jitter

≤80 psrms [26]

Trigger filters

Low-frequency (LF) reject

50 kHz

High-frequency (HF) reject

50 kHz

Digital Trigger

Trigger type

Digital

Sources

PXI_Trig <0..6> (backplane connector)

PFI <0..1> (front panel SMB connector)

PXI Star Trigger (backplane connector)

Video Trigger

Trigger type

Video

Sources

CH 0 (front panel BNC connector)

CH 1 (front panel BNC connector)

TRIG (front panel BNC connector)

Video trigger types

Specific line

Any line

Specific field

Standards

Negative sync of NTSC, PAL, or SECAM signal

External Trigger

Connector

TRIG (front panel BNC connector)

Impedance

1 MΩ in parallel with 22 pF

Coupling

AC

DC

AC-coupling cutoff (-3 dB)

12 Hz

Input voltage range

±5 V

Maximum input overload

|Peaks| ≤42 V

PFI 0 and PFI 1 (Programmable Function Interface, AUX Front Panel Connectors)

Connector

9-pin mini-circular DIN

Direction

Bidirectional

As an input (trigger)

Destinations

Start trigger (acquisition arm)

Reference (stop) trigger

Arm Reference trigger

Advance trigger

Input impedance

150 kΩ, nominal

VIH

2.0 V

VIL

0.8 V

Maximum input overload

-0.5 V to 5.5 V

Maximum frequency

25 MHz

As an output (event)

Sources

Start trigger (acquisition arm)

Reference (stop) trigger

End of Record

Done (end of acquisition)

Probe Compensation[27]

Output impedance

50 Ω

Logic type

3.3 V CMOS

Maximum drive current

±24 mA

Maximum frequency

25 MHz

Waveform Specifications

Onboard memory sizes

8 MB per channel (4 MS per channel)

32 MB per channel (16 MS per channel)

256 MB per channel (128 MS per channel)

512 MB per channel (256 MS per channel)

Minimum record length

1 sample

Number of pretrigger samples

Zero up to full record length[28]

Number of posttrigger samples

Zero up to full record length[28]

Maximum number of records in onboard memory

8 MB per channel

21,845

32 MB per channel

87,381

256 MB per channel

100,000[29]

512 MB per channel

100,000[29]

Allocated onboard memory per record

(Record Length × 2 bytes/S) + 200 bytes, rounded up to next multiple of 128 bytes

or

384 bytes, whichever is greater

Calibration

External Calibration

External calibration calibrates the VCXO and the voltage reference. All calibration constants are stored in nonvolatile memory.

Self-Calibration

Self-calibration is done on software command. The calibration corrects for gain, offset, frequency response, triggering, and timing adjustment errors for all input ranges.

Calibration Specifications

Interval for external calibration

2 years

Warm-up time[30]

15 minutes

Software

Driver Software

Driver support for this device was first available in NI-SCOPE2.7.

NI-SCOPE is an IVI-compliant driver that allows you to configure, control, and calibrate the PXI-5124. NI-SCOPE provides application programming interfaces for many development environments.

Application Software

NI-SCOPE provides programming interfaces, documentation, and examples for the following application development environments:

  • LabVIEW
  • LabWindows™/CVI™
  • Measurement Studio
  • Microsoft Visual C/C++
  • .NET (C# and VB.NET)

Interactive Soft Front Panel and Configuration

When you install NI-SCOPE on a 64-bit system, you can monitor, control, and record measurements from the PXI-5124 using InstrumentStudio.

InstrumentStudio is a software-based front panel application that allows you to perform interactive measurements on several different device types in a single program.

Note InstrumentStudio is supported only on 64-bit systems. If you are using a 32-bit system, use the NI-SCOPE–specific soft front panel instead of InstrumentStudio.

InstrumentStudio and the NI-SCOPE SFP are included on the NI-SCOPE media.

NI Measurement & Automation Explorer (MAX) also provides interactive configuration and test tools for the PXI-5124. MAX is included on the driver media.

Synchronization

Synchronization with the NI-TClk API [31]

NI-TClk is an API that enables system synchronization of supported PXI modules in one or more PXI chassis, which you can use with the PXI-5124 and NI-SCOPE.

NI-TClk uses a shared Reference Clock and triggers to align the Sample Clocks of PXI modules and synchronize the distribution and reception of triggers. These signals are routed through the PXI chassis backplane without external cable connections between PXI modules in the same chassis.

Module-to-module skew, between PXI-5124 modules using NI-TClk [32]
NI-TClk synchronization without manual adjustment [33]

Skew, Peak-to-Peak [34]

500 ps

NI-TClk synchronization with manual adjustment [33]

Skew after manual adjustment

<10 ps

Sample Clock delay/adjustment resolution

≤5 ps

Dimensions and Weight

Dimensions

3U, one-slot, PXI/cPCI module

21.6 cm × 2.0 cm × 13.0 cm

(8.5 in × 0.8 in × 5.1 in)

Weight

383 g (13.5 oz)

Power

Current draw

+3.3 VDC

1.3 A

+5 VDC

1.7 A

+12 VDC

130 mA

-12 VDC

270 mA

Total power

17.6 W

Environment

Maximum altitude

2,000 m (at 25 °C ambient temperature)

Pollution Degree

2

Indoor use only.

Operating Environment

Ambient temperature range

0 °C to 45 °C when installed in an NI PXI-1000/B or PXI-101x chassis.

0 °C to 55 °C when installed in any other NI PXI chassis.

(Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2.)

Relative humidity range

10% to 90%, noncondensing (Tested in accordance with IEC 60068-2-56.)

Storage Environment

Ambient temperature range

-40 °C to 71 °C (Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2.)

Relative humidity range

5% to 95%, noncondensing (Tested in accordance with IEC 60068-2-56.)

Shock and Vibration

Operational shock

30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27. Test profile developed in accordance with MIL-PRF-28800F.)

Storage shock

50 g peak, half-sine, 11 ms pulse (Meets IEC 60068-2-27. Test profile developed in accordance with MIL-PRF-28800F.)

Random vibration

Operating

5 Hz to 500 Hz, 0.31 grms (Tested in accordance with IEC 60068-2-64.)

Nonoperating

5 Hz to 500 Hz, 2.46 grms (Tested in accordance with IEC 60068-2-64. Test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

Compliance and Certifications

Safety Compliance Standards

This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

  • IEC 61010-1, EN 61010-1
  • UL 61010-1, CSA C22.2 No. 61010-1
Note For safety certifications, refer to the product label or the Product Certifications and Declarations section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:
  • EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
  • EN 55011 (CISPR 11): Group 1, Class A emissions
  • EN 55022 (CISPR 22): Class A emissions
  • EN 55024 (CISPR 24): Immunity
  • AS/NZS CISPR 11: Group 1, Class A emissions
  • AS/NZS CISPR 22: Class A emissions
  • FCC 47 CFR Part 15B: Class A emissions
  • ICES-001: Class A emissions
Note In the United States (per FCC 47 CFR), Class A equipment is intended for use in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada, Australia, and New Zealand (per CISPR 11), Class A equipment is intended for use only in heavy-industrial locations.
Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treatment of material or inspection/analysis purposes.
Note For EMC declarations, certifications, and additional information, refer to the Product Certifications and Declarations section.

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Environmental Management

NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

For additional environmental information, refer to the Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

EU and UK Customers

  • 1378 Waste Electrical and Electronic Equipment (WEEE)—At the end of the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit ni.com/environment/weee.

    • 电子信息产品污染控制管理办法（中国RoHS）

  • 1378 中国RoHS— NI符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于NI中国RoHS合规性信息，请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)

    • 1 AC coupling available on 1 MΩ input only.

    2 Programmable vertical offset = 0 V. Within ±5 °C of self-calibration temperature.

    3 1 MΩ input only.

    4 Within ±5 °C of self-calibration temperature.

    5 CH 0 to/from CH 1, External trigger to CH 0 or CH 1.

    6 Results based on 2×1012 samples.

    7 ppt = parts per trillion (1012).

    8 Filters off.

    9 Referenced to 50 kHz.

    10 135 MHz above 40 °C.

    11 Only one filter can be enabled at any given time. The anti-alias filter is enabled by default.

    12 AC coupling available on 1 MΩ path only.

    13 Filters off or Anti-alias filter on. 10 MHz, -1 dBFS input signal. Includes the 2nd through the 5th harmonics. Measured from DC to 100 MHz.

    14 Filters off or Anti-alias filter on. 10 MHz, -1 dBFS input signal. Includes the 2nd through the 5th harmonics.

    15 0.2 V to 2.0 V input ranges on 50 Ω input. Filters off or Anti-alias filter on. Two tones at 10.2 MHz and 11.2 MHz. Each tone is -7 dBFS.

    16 Excludes harmonics. 10 MHz, -1 dBFS input signal. Measured from DC to 100 MHz.

    17 Includes harmonics. 10 MHz, -1 dBFS input signal. Measured from DC to 100 MHz.

    18 Internal Sample clock is locked to the Reference clock or derived from the onboard VCXO.

    19 Divide by n decimation used for all rates less than 200 MS/s.

    20 10 MHz input signal.

    21 Includes the effects of the converter aperture uncertainty and the clock circuitry jitter. Excludes trigger jitter.

    22 Divide by n decimation available where 1 ≤ n ≤ 65,535.

    23 Decimated Sample clock only.

    24 Default of 10 MHz. The PLL Reference clock frequency must be accurate to ±50 ppm.

    25 Holdoff set to 0. Onboard Sample clock at maximum rate.

    26 Within ±5 °C of self-calibration temperature.

    27 1 kHz, 50% duty cycle square wave, PFI 1 only.

    28 Single-record mode and multiple-record mode.

    29 It is possible to exceed these numbers if you fetch records while acquiring data.

    30

    31 NI-TClk installs with NI-SCOPE.

    32 Although you can use NI-TClk to synchronize non-identical modules, these specifications apply only to synchronizing identical modules. Specifications are valid under the following conditions:

    • All modules installed in the same chassis.
    • All filters are disabled.
    • NI-TClk used to align the sample clocks of each module.
    • All parameters set to identical values for each module.
    • Self-calibration completed.
    • Ambient temperature within ±1 °C of self-calibration.
    For other configurations, including multi-chassis systems, contact NI Technical Support at ni.com/support.

    33 Manual adjustment is the process of minimizing synchronization jitter and skew by adjusting Trigger Clock (TClk) signals using the instrument driver.

    34 Caused by clock and analog delay differences. No manual adjustment performed.