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Table Of Contents

PXI-5691 Specifications

Version:
Last Modified: February 27, 2018

Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

The following characteristic specifications 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.

Specifications are Typical unless otherwise noted.

Conditions

Specifications are valid under the following conditions unless otherwise noted.

  • 10 minutes warm-up time before operation
  • Calibration cycle maintained
  • Chassis fan speed set to High
  • NI-5690 instrument driver used
  • NI-5690 instrument driver self-calibration performed after instrument temperature is stable

Frequency Range

Frequency range

50 MHz to 8.0 GHz

Channels

Number of channels

2

Gain

Channel 0

Fixed

Channel 1

Programmable

Channel 0 (CH 0) Performance

Level calibration accuracy[1]

±0.9 dB

Absolute maximum input power (no damage)

+30 dBm, typical (7.1 Vrms, 10 Vpk at 50 Ω)

Maximum reverse power (no damage)

+20 dBm

Maximum output power

+25 dBm

DC voltage at input

±10 V, typical

Gain variation by temperature

(-1.18 × 10-12 × F) - 0.01 in dB/°C [2]

Table 1. PXI-5691 Channel 0: Gain Warranted Specification
10 MHz 250 MHz 2 GHz 8 GHz
Gain (Upper Bound) (dB) 33.26 33.22 32.23 30.34
Gain (Lower Bound) (dB) 22.50 22.70 24.10 21.44

The warranted specification is valid only between 10 MHz and 8 GHz. Intermediate bounds can be determined by linearly interpolating the provided data.

Figure 1. Measured Noise Figure (NF)
Figure 2. Measured Output Intercept Point (OIP 3)
Figure 3. Measured Reverse Gain (S12)
Figure 4. Measured 1 dB Gain Compression
Figure 5. Measured P IN at 1 dB Gain Compression
Figure 6. Measured 2nd Harmonic (P OUT = 4 dBm)
Figure 7. Measured Saturated Output Power

Channel 1 (CH 1)

Main Path

Gain range

+31.5 dB, typical

Gain step size

+0.5 dB, typical

Level setting time

+4 µs, maximum[3]

Level calibration accuracy

±0.9 dB[4]

Absolute maximum input power (no damage)

+30 dBm, typical (7.1 Vrms, 10 Vpk at 50 Ω)

Maximum reverse power (no damage)

+20 dBm

Maximum output power

+25 dBm

DC voltage at input

±10 V, typical

Gain variation by temperature

(-1.34 × 10-12 × F) - 0.01 in dB/°C [5]

Table 2. Channel 1: Programmable Gain Warranted Specification
10 MHz 3.25 GHz 4 GHz 8 GHz
Maximum Gain (Upper Bound) (dB) 34.10 27.57 27.15 24.27
Maximum Gain (Lower Bound) (dB) 23.60 18.85 18.71 15.40
Minimum Gain (Upper Bound) (dB) 3.96 -2.96 -4.52 -6.14
Minimum Gain (Lower Bound) (dB) -7.00 -11.90 -12.65 -16.53

The warranted specification is valid only between 10 MHz and 8 GHz. Intermediate bounds can be determined by linearly interpolating the provided data.

Figure 8. Average Measured Input and Output VSWR at Maximum Gain Setting
Figure 9. Average Measured Input and Output VSWR at Minimum Gain Setting
Figure 10. Measured Noise Figure (NF)
Figure 11. Measured Output Intercept Point (OIP 3)
Figure 12. Measured Saturated Output Power (P SAT at Maximum Gain Setting)
Figure 13. Measured Reverse Gain (S12) at Maximum Gain Setting
Figure 14. Measured 1 dB Gain Compression
Figure 15. Measured P IN at 1 dB Gain Compression
Figure 16. Measured 2nd Harmonic (P OUT = 4 dBm, Maximum Gain Setting)

Direct Path

Level calibration accuracy

±0.9 dB[6]

Maximum input power (no damage)

+30 dBm, typical (7.1 Vrms, 10 Vpk at 50 Ω)

DC voltage at input

±10 V, typical[7]

Relay switch time

5 ms, maximum

Gain variation by temperature

(-1.34 × 10-12 × F) - 0.01 in dB/°C [8]

Direct Path Performance

Table 3. PXI-5691 Channel 1: Direct Path Gain
Frequency 10 MHz 8 GHz
Gain (Upper Bound) (dB) 0.40 -0.60
Gain (Lower Bound) (dB) -0.60 -3.40
Figure 17. Average Measured Input and Output VSWR

Channel 0/Channel 1 Cascaded Path Performance

Figure 18. Average Measured Cascaded Gain Response
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Note  

When cascading Channel 0 and Channel 1, each channel is individually calibrated.

Power Requirements

Table 4. Power and Current
Power Rail (VDC) Maximum Current (mA) Typical Current (mA) Maximum Power (W)
+3.3 643 234 2.1
+5 1,382 1,310 6.9
+12 240 99 2.9
-12 28 12 0.34

Calibration

Interval

1 year

Physical Characteristics

Front Panel Connectors

CH 0 IN

Connector

SMA female

Impedance

50 Ω

Coupling

AC

Input amplitude

+30 dBm, maximum

CH 0 OUT

Connector

SMA female

Impedance

50 Ω

Coupling

AC

Output amplitude

+25 dBm, maximum

CH 1 IN

Connector

SMA female

Impedance

50 Ω

Coupling[9]

AC

Input amplitude

+30 dBm, maximum

CH 1 OUT

Connector

SMA female

Impedance

50 Ω

Coupling

AC

Output amplitude

+25 dBm, maximum

Physical Dimensions

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

263 g (9.2 oz)

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 55 °C (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 70 °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.)

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.)

Random vibration

Operating

5 Hz to 500 Hz, 0.3 grms

Nonoperating

5 Hz to 500 Hz, 2.4 grms (Tested in accordance with IEC-60068-2-64. Nonoperating test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

Compliance and Certifications

Safety

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
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Note  

For UL and other safety certifications, refer to the product label or the Online Product Certification 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
  • AS/NZS CISPR 11: Group 1, Class A emissions
  • FCC 47 CFR Part 15B: Class A emissions
  • ICES-001: Class A emissions
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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.

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Note  

Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treament of material or inspection/analysis purposes.

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Note  

For EMC declarations and certifications, refer to the Online Product Certification section.

CE Compliance

This product meets the essential requirements of applicable European Directives, as follows:

  • 2014/35/EU; Low-Voltage Directive (safety)
  • 2014/30/EU; Electromagnetic Compatibility Directive (EMC)

Online Product Certification

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit ni.com/certification, search by model number or product line, and click the appropriate link in the Certification column.

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 Minimize Our Environmental Impact 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.

Waste Electrical and Electronic Equipment (WEEE)

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EU Customers  

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)

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中国客户  

National Instruments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National Instruments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 Valid for Tref ± 5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for ΔT.
  • 2 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * ΔT, where
    • ΔT = TsensorTref
    • Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by the ni5690 Get Temperature VI
    • F = frequency, in Hz
    • Tref = 34 °C
  • 3 The level settling time is measured to 0.5 dB of final value when switching from minimum to maximum gain. Achieving settling times closer to the final attenuation value may take substantially longer.
  • 4 Valid for Tref ± 5 °C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for ΔT.
  • 5 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * ΔT, where
    • ΔT = TsensorTref
    • Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by the ni5690 Get Temperature VI
    • Tref = 34 °C
    • F = frequency, in Hz
  • 6 Valid for Tref ± 5° C. For temperatures other than Tref, the level calibration accuracy is valid after applying the gain correction factor for ΔT.
  • 7 DC coupled for input to output, but only calibrated from 50 MHz to 8 GHz.
  • 8 Calculate the correction factor using the following equation: Δ Gain = (Gain Variation by temperature) * ΔT, where
    • ΔT = Tsensor-Tref
    • Tsensor = the temperature reading of the onboard temperature sensor in °C, as reported by the ni5690 Get Temperature VI.
    • Tref = 34°C
    • F = frequency, in Hz
  • 9 Direct path passes input DC level to output.

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