National Instruments PXI-2503 User manual

NI PXI-2503 Specifications
24-Channel Relay Multiplexer/Matrix
This document lists specifications for the NI PXI-2503 multiplexer/matrix
module. All specifications are subject to change without notice. Visit
ni.com/manuals for the most current specifications.
Configurations........................................ 48 ×1, 1-wire multiplexer
24 ×1, 2-wire multiplexer
Dual 12 ×1, 2-wire multiplexers
Quad 6 ×1, 2-wire multiplexers
12 ×1, 4-wire multiplexer
4×6, 2-wire matrix
Input Characteristics
All input characteristics are DC, ACrms, or a combination, unless otherwise
specified.
Maximum switching voltage.................. 30 VAC, 60 VDC
(channel-to-channel and channel-to-ground)
Maximum switching current .................. 1 A
(per channel)
Maximum carry current ......................... 1 A
(per channel)
Maximum switching power ................... 30 W
(per channel)

NI PXI-2503 Specifications 2 ni.com
DC path resistance
Initial................................................<1 Ω
End of life ........................................>2 Ω
Path resistance is a combination of relay contact resistance and trace
resistance. Contact resistance typically remains low for the life of a relay.
At the end of relay life, the contact resistance rapidly rises above 1.0 Ω.
Thermal EMF (differential) ....................<2 µV
RF Performance Characteristics
Typical bandwidth ..................................≥10 MHz
(50 Ωtermination)
Typical channel-to-channel isolation
(50 Ωtermination)
10 kHz .............................................>100 dB
100 kHz ...........................................>80 dB
1 MHz..............................................>55 dB
10 MHz............................................>30 dB
Dynamic Characteristics
Scan rate .................................................200 cycles/s, typical
Relay operate time (at 20 °C) .................3 ms typical, 5 ms maximum
Release time (at 20 °C)...........................1.5 ms typical, 5 ms maximum
Expected relay life
Mechanical ......................................50,000,000 cycles
Electrical..........................................2,000,000 cycles
(maximum load)

©National Instruments Corporation 3 NI PXI-2503 Specifications
Trigger Characteristics
Input trigger
Sources............................................ PXI trigger lines 0–7,
Front panel
Minimum pulse width
PXI trigger lines....................... 70 ns
Front panel............................... 500 ns
Output trigger
Destinations .................................... PXI trigger lines 0–7,
Front panel
Pulse width...................................... 1 µs
Physical Characteristics
Relay type .............................................. Electromechanical, nonlatching
I/O connector.......................................... 68-pin male SCSI
Power requirement
+5 VDC........................................... 370 mA typical,
700 mA maximum
Contact material ..................................... Gold-clad silver alloy
Dimensions (W ×H ×D) ....................... 2.0 cm ×10.0 cm ×16.3 cm
(0.8 in. ×3.9 in. ×6.4 in.)
Weight.................................................... 250 g
(9 oz)
Environment
Operating temperature............................ 0 °C to 50 °C
Storage temperature ............................... –20 °C to 70 °C
Relative humidity................................... 5% to 85% noncondensing
Pollution Degree .................................... 2
Approved at altitudes up to 2,000 m
Indoor use only

NI PXI-2503 Specifications 4 ni.com
Accessories
Visit ni.com for more information about the following accessories.
Table 1. Accessories Available for the NI PXI-2503
Accessory Part Number
NI TB-2605 terminal block
(48 ×1, 1-wire multiplexer)
(24 ×1, 2-wire multiplexer)
(12 ×1, 4-wire multiplexer)
777878-01
NI TB-2606 terminal block
(4 ×6, 2-wire matrix)
777879-01
TBX-68S terminal block with
cold-junction sensor
777716-01
CB-68LB screw terminal block 777145-01
1 m SH68-68S shielded cable 185262-01
2 m SH68-68S shielded cable 185262-02
5 m SH68-68S shielded cable 185262-05

©National Instruments Corporation 5 NI PXI-2503 Specifications
Figure 1. NI PXI-2503 Hardware Diagram
CH11+
CH11–
CH10+
CH10–
CH9+
CH9–
CH8+
CH8–
CH7+
CH7–
CH6+
CH6–
CH5+
CH5–
CH4+
CH4–
CH3+
CH3–
CH2+
CH2–
CH1+
CH1–
CH0+
CH0–
CH12+
CH12–
CH13+
CH13–
CH14+
CH14–
CH15+
CH15–
CH16+
CH16–
CH17+
CH17–
CH18+
CH18–
CH19+
CH19–
CH20+
CH20–
CH21+
CH21–
CH22+
CH22–
CH23+
CH23–
CJS+
CJS–
1-Wire Lo Ref
COM1+
COM1–
AB0+
AB0–
COM0+
COM0–
AB1+
AB1–
COM2+
COM2–
Bank1
BC01
BC02
BC23
AB0
1WIRE
HLSELECT Bank0
Bank2
Bank3
COM3+
COM3–

NI PXI-2503 Specifications 6 ni.com
Compliance and Certifications
Safety
This product meets the requirements of the following standards for safety
and electrical equipment for measurement, control, and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 3111-1, UL 61010B-1
• CAN/CSA C22.2 No. 1010.1
Note For UL and other safety certifications, refer to the product label, or visit
ni.com/hardref.nsf, search by model number or product line, and click the
appropriate link in the Certification column.
Electromagnetic Compatibility
Emissions................................................EN 55011 Class A at 10 m
FCC Part 15A above 1 GHz
Immunity ................................................EN 61326:1997 + A2:2001,
Table 1
EMC/EMI ...............................................CE, C-Tick, and FCC Part 15
(Class A) Compliant
Note For EMC compliance, you must operate this device with shielded cabling.
CE Compliance
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
Low-Voltage Directive (safety)..............73/23/EEC
Electromagnetic Compatibility
Directive (EMC) .....................................89/336/EEC
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit
ni.com/hardref.nsf, search by model number or product line, and click the
appropriate link in the Certification column.

National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation.
Product and company names mentioned herein are trademarks or trade names of their respective
companies. For patents covering National Instruments products, refer to the appropriate location:
Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents.
© 2003 National Instruments Corp. All rights reserved.
323533B-01 Dec03
*323533B-01*