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.

Conditions

Specifications are valid for the range -40 °C to 70 °C unless otherwise noted. All voltages are relative to GND unless otherwise noted.

NI-9402 Pinout



Table 1. Signal Descriptions
Signal Description
DIO Digital input/output signal connection
GND Ground connection

Input/Output Characteristics

Number of channels

4 DIO channels

Default power-on line direction

Input

Input/output type

LVTTL, single-ended

Digital logic levels

Maximum input voltage

5.25 V

Input high, VIH

2 V minimum

Input low, VIL

0.8 V maximum

Output high, VOH (3.4 V maximum)

Sourcing 100 µA

3.0 V minimum

Sourcing 2 mA

2.8 V minimum

Output low, VOL

Sinking 100 µA

0.1 V maximum

Sinking 2 mA

0.3 V maximum

Maximum I/O switching frequency

4 channels

16 MHz

2 channels

20 MHz

I/O propagation delay[1]1 Propagation delay is the maximum amount of time it takes for an input or output signal to propagate between the backplane and the I/O connector, and does not include any additional delay introduced by the cable.,2 Measured at the I/O connector of a load with requirements similar to the NI-9402 and driven through a 2 m coaxial cable.[2]

55 ns maximum, 18 ns typical

I/O pulse width distortion[2]

25 ns maximum

Input low current, IIL (VIN = 0 V)

-55 µA maximum

Input high current, IIH (VIN = 4.5 V)

150 µA maximum

Input impedance

Input capacitance

50 pF maximum

Input resistance

49 kΩ minimum

Input rise/fall rate

10 ns/V maximum

Input protection

±30 V maximum on one channel at a time

MTBF

1,482,777 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method

Safety Voltages

Connect only voltages that are within the following limits:

Channel-to-earth ground

±30 V maximum

Isolation

Channel-to-channel

None

Channel-to-earth ground

None

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

2,000 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

550 mW maximum

Sleep mode

1 mW maximum

Thermal dissipation (at 70 °C)

Active mode

550 mW maximum

Sleep mode

1 mW maximum

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Cable

50 Ω BNC

Cable length

2 m maximum

Weight

199 g (6.9 oz)

1 Propagation delay is the maximum amount of time it takes for an input or output signal to propagate between the backplane and the I/O connector, and does not include any additional delay introduced by the cable.

2 Measured at the I/O connector of a load with requirements similar to the NI-9402 and driven through a 2 m coaxial cable.