NI-9207 Specifications

Definitions

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

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.

Specifications are Typical unless otherwise noted.

Connector Types

The NI-9207 has more than one connector type: NI-9207 with spring terminal and NI-9207 with DSUB. Unless the connector type is specified, NI-9207 refers to all connector types.

NI-9207 Pinout



Table 1. Signal Descriptions
Signal Description
AI+ Positive analog input voltage connection
AI- Negative analog input signal connection
AI Analog input current connection
Vsup Voltage supply connection
COM Common reference connection to isolated ground

Input Characteristics

Number of channels

16 analog input channels: 8 voltage and 8 current

ADC resolution

24 bits

Type of ADC

Delta-Sigma

Sampling mode

Scanned

Input range
Voltage channels

Minimum

±10.2 V

Typical

±10.4 V

Current channels

Minimum

±21.5 mA

Typical

±22.0 mA

Maximum working voltage for analog inputs (signal voltage + common mode voltage), voltage channels only

Each channel must remain within ±10.2 V of common

Conversion time (per channel)

High-Resolution Mode

52 ms

High-Speed Mode

2 ms

Overvoltage protection, channel-to-COM, all channels

±30 V maximum on one channel at a time

Vsup pins, current channels only

Current

2 A maximum

Voltage

0 to 30 V maximum

Input impedance

Voltage channels

>1 GΩ

Current channels

85 Ω

Table 2. Accuracy
Calibrated Measurement Conditions Channels Percent of Reading (Gain Error) Percent of Range[1]1 Range equals 10.4 V for voltage channels and 22.0 mA for current channels.(Offset Error)
Maximum (-40 °C to 70 °C) Voltage channels ±0.52% ±0.04%
Current channels ±0.87% ±0.05%
Input noise
Voltage channels

High-Resolution Mode

16 μV RMS

High-Speed Mode

80 μV RMS

Current channels

High-Resolution Mode

50 nA RMS

High-Speed Mode

200 nA RMS

Stability
Voltage channels

Gain drift

±21 ppm/°C

Offset drift

±14 μV/°C

Current channels

Gain drift

±43 ppm/°C

Offset drift

±30 nA/°C

CMRR (fin= 0 Hz to 60 Hz), voltage channels only

86 dB

CMRR, channel-to-earth ground (50/60 Hz)[2]2 Voltage channel of NI-9207 with spring terminal only.

High-Resolution Mode

160 dB

High-Speed Mode

120 dB

NMRR (High-Resolution Mode only)

50 Hz

66 dB

60 Hz

68 dB

NI-9207 with Spring Terminal Safety Voltages

Connect only voltages that are within the following limits:

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 V RMS, Measurement Category II

Withstand, up to 5,000 m

3,000 V RMS, verified by a 5 s dielectric withstand test

NI-9207 with DSUB Safety Voltages

Connect only voltages that are within the following limits:

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

60 V DC, Measurement Category I

Withstand, up to 2,000 m

1,000 V RMS, verified by a 5 s dielectric withstand test

Withstand, up to 5,000 m

500 V RMS, verified by a 5 s dielectric withstand test

Measurement Category

Measurement Category I

Caution Do not connect the NI-9207 with DSUB to signals or use for measurements within Measurement Categories II, III, or IV.
Attention Ne pas connecter le NI-9207 with DSUB à des signaux dans les catégories de mesure II, III ou IV et ne pas l'utiliser pour effectuer des mesures dans ces catégories.
Warning Do not connect the NI-9207 with DSUB to signals or use for measurements within Measurement Categories II, III, or IV, or for measurements on MAINs circuits or on circuits derived from Overvoltage Category II, III, or IV which may have transient overvoltages above what the product can withstand. The product must not be connected to circuits that have a maximum voltage above the continuous working voltage, relative to earth or to other channels, or this could damage and defeat the insulation. The product can only withstand transients up to the transient overvoltage rating without breakdown or damage to the insulation. An analysis of the working voltages, loop impedances, temporary overvoltages, and transient overvoltages in the system must be conducted prior to making measurements.
Mise en garde Ne pas connecter le NI-9207 with DSUB à des signaux dans les catégories de mesure II, III ou IV et ne pas l'utiliser pour des mesures dans ces catégories, ou des mesures sur secteur ou sur des circuits dérivés de surtensions de catégorie II, III ou IV pouvant présenter des surtensions transitoires supérieures à ce que le produit peut supporter. Le NI-9207 with DSUB ne doit pas être raccordé à des circuits ayant une tension maximale supérieure à la tension de fonctionnement continu, par rapport à la terre ou à d'autres voies, sous peine d'endommager et de compromettre l'isolation. Le produit peut tomber en panne et son isolation risque d'être endommagée si les tensions transitoires dépassent la surtension transitoire nominale. Une analyse des tensions de fonctionnement, des impédances de boucle, des surtensions temporaires et des surtensions transitoires dans le système doit être effectuée avant de procéder à des mesures.

Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.

Note Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are for other circuits not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Measurement Category II

Caution Do not connect the NI-9207 with spring terminal to signals or use for measurements within Measurement Categories III or IV.
Attention Ne pas connecter le NI-9207 with spring terminal à des signaux dans les catégories de mesure III ou IV et ne pas l'utiliser pour effectuer des mesures dans ces catégories.

Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system. This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe.

Environmental Characteristics

Temperature

Operating

-40 °C to 70 °C

Storage

-40 °C to 85 °C

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Ingress protection

IP40

Pollution Degree

2

Maximum altitude

5,000 m

Shock and Vibration
Operating vibration

Random

5 g RMS, 10 Hz to 500 Hz

Sinusoidal

5 g, 10 Hz to 500 Hz

Operating shock

30 g, 11 ms half sine; 50 g, 3 ms half sine; 18 shocks at 6 orientations

To meet these shock and vibration specifications, you must panel mount the system.

Power Requirements

Power consumption from chassis

Active mode

295 mW maximum

Sleep mode

25 μW maximum

Thermal dissipation (at -40 °C)

Active mode

0.75 W maximum

Sleep mode

0.59 W maximum

Physical Characteristics

Weight

NI-9207 with spring terminal

161 g (5.7 oz)

NI-9207 with DSUB

144 g (5.1 oz)

Dimensions

Visit ni.com/dimensions and search by module number.

Spring terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.394 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per spring terminal; two wires per spring terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

Calibration

You can obtain the calibration certificate and information about calibration services for the NI-9207 at ni.com/calibration.

Calibration interval

2 years

1 Range equals 10.4 V for voltage channels and 22.0 mA for current channels.

2 Voltage channel of NI-9207 with spring terminal only.