PXI-2722 Specifications

This document lists specifications for the PXI-2722. All specifications are subject to change without notice.

About These Specifications

Specifications characterize the warranted performance of the instrument under the stated operating conditions. Data in this document are Specifications unless otherwise noted.

Typical Specifications are specifications met by the majority of the instrument under the stated operating conditions and are tested at 23 °C ambient temperature. Typical specifications are not warranted.

All voltages are specified in DC, AC_pk, or a combination unless otherwise specified.

Caution The protection provided by the PXI-2722 can be impaired if it is used in a manner not described in this document.

PXI-2722 Pinout

Table 1. Signal Descriptions
Signal	Description
Bx+	Positive bank connection
Bx-	Negative bank connection
CHx+	Positive signal connection
CHx-	Negative signal connection
HI	HI input connection
HI SENSE	HI sense connection
LO	LO input connection
LO SENSE	LO sense connection
—	No connection

Input Characteristics

Number of channels

5

Maximum voltage
Channel-to-channel	60 VDC, 30 VAC_rms, CAT I¹ Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to the MAINs building installations of Measurement Categories CAT II, CAT III, or CAT IV.^[1]
Channel-to-ground	60 VDC, 30 VAC_rms, CAT I^[1]

Maximum current	0.3 A (per channel)
Maximum power	0.25 W (per channel)
Resistor accuracy	0.5%
TCR	100 ppm
Resolution	0.25 Ω steps
Range	0.25 Ω to 16,320 Ω (per channel)

Typical channel accuracy
Channel set between 20 Ω and 40 Ω	<10.0%
Channel set between 40 Ω and 120 Ω	<5.0%
Channel set between 120 Ω and 400 Ω	<2.0%
Channel set between 400 Ω and 16,000 Ω	<1.0%

Channel accuracy is a function of the overall resistor accuracy, plus relay and trace path resistance, plus any effects of temperature.

Typical minimum resistance

2 Ω

Typical DC offset resistance (per channel)
Initial	<2 Ω
End-of-life	≥3 Ω

Channel resistance is a combination of relay contact resistance, trace resistance, and resistor value. Contact resistance typically remains low for the life of a relay. At the end of relay life, the offset resistance may rapidly rise above 3 Ω.

The following figures show the expected resistance error and the expected resistance:

Figure 1. Expected resistance error between 0 Ω and 16,000 Ω

Figure 2. Expected resistance error between 0 Ω and 100 Ω

Figure 3. Expected resistance between 0 Ω and 16,000 Ω

Figure 4. Expected resistance between 0 Ω and 50 Ω

Dynamic Characteristics

Simultaneous drive limit	89 relays
Relay operate/release time	250 μs

Note Certain applications may require additional time for proper settling. Refer to the NI Switches Help for information about including additional settling time.

Typical relay life
Low power load (<50 mW)	1 × 10⁸ cycles
Full power load (<250 mW)	1 × 10⁶ cycles

Note Reed relays are highly susceptible to damage caused by switching capacitive and inductive loads. Capacitive loads can cause high inrush currents, whereas inductive loads can cause high flyback voltages. The addition of appropriate resistive protection can greatly improve contact lifetime. For more information about adding protection circuitry to a capacitive load, visit ni.com/r/relaylifetime. For information about inductive loads, visit ni.com/r/relayflyback.

Note The relays used in the PXI-2722 are field replaceable. Refer to the NI Switches Help for information about replacing a failed relay.

Trigger Characteristics

Input trigger
Sources	PXI trigger lines <0...7>
Minimum pulse width	150 ns

Output trigger
Destinations	PXI trigger lines <0...7>
Default pulse width	2 μs, typical

Note The PXI-2722 can recognize trigger pulse widths that are less than 150 ns by disabling digital filtering. For information about disabling digital filtering, refer to the NI Switches Help.

Physical Characteristics

Relay type

Reed

Note NI advises against installing reed relay modules directly adjacent to an embedded controller with a magnetic hard drive because of the sensitivity of reed relays and the possibility of interference.

Front panel connector	37-pin D-SUB connector
DMM port	2 × 2 Micro-Fit connector
Power requirement	1.2 W at 3.3 V 11 W maximum at 5 V
Dimensions (L × W × H)	3 U, one slot, PXI/cPCI module, 21.6 × 2.0 × 13.0 cm (8.5 × 0.8 × 5.1 in.)
Weight	266 g (9.3 oz)

Environment

Table 2. Environment
Operating temperature	0 °C to 55 °C
Storage temperature	-20 °C to 70 °C
Relative humidity	5% to 85%, noncondensing
Pollution Degree	2
Maximum altitude	2,000 m

Indoor use only.

Shock and Vibration

Table 3. 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.)
Random vibration, operating	5 Hz to 500 Hz, 0.3 g_rms
Random vibration, nonoperating	5 Hz to 500 Hz, 2.4 g_rms (Tested in accordance with IEC 60068-2-64. Nonoperating 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 Product Certifications and Declarations.

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

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）

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.)