L4421A

L4421A KEYSIGHT | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 9

Technical content

40-Channel Armature Multiplexer Data Sheet – LXI compliance includes built-in Ethernet connectivity – Fully-featured graphical web interface – 40 2-wire latching armature relays – Thermocouple reference junction for temperature measurements (requires external DMM) – Relay counter – Scan up to 100 ch/s – 300 V, 1 A switch; 2 A carry current – Software drivers for most common programming environments

Figure 1. L4421A 40-channel armature multiplexer with low thermal offset (bank 2). The KeysightTechnologies, Inc. need for external shunt resistors. ated test integration and development. relays are nearing their end of life. plexed signals to an external DMM.

Figure 2. The web interface makes it easy to set up, troubleshoot and maintain having to install any special software.

High-Performance Switching Wherever Your Application Needs It Power button Status LEDs External trigger to synchronize events Optional GPIB Built-in Ethernet Analog bus for connection to other devices Easy connection options with terminal blocks, standard 50-pin cables or connector kits

Specifications and Characteristics Channels/configurations 40 2-wire 20 4-wire 4-current (1.5 A fused) Switch type Armature Latching Input characteristics (per channel) Max volts (DC, AC RMS) 1 ±300 V Max current (DC, AC RMS) Switch current Carry current 1 A 2 A Power (W, VA) 4 60 W Volt-Hertz limit 8 10 Initial closed channel resistance 2,7 < 1.5 Ω General specifications Offset voltage 2 <3 uV DC Isolation (ch-ch, ch-earth) >10 GΩ T/C cold junction accuracy 2,6 < 0.8 °C AC characteristics Bandwidth at terminal block 3 45 MHz Crosstalk at terminal block (ch-ch) 3 300 kHz

1 MHz

20 MHz

45 MHz

-75 dB -75 dB -50 dB -40 dB Capacitance at terminal block HI-LO LO – earth 150 pF 150 pF General characteristics Relay life typical No load

10 V, 100 mA

Rated load = 100 M 10 M 100 k Scanning speeds 5 100 ch/s Open /close time, typical 4 ms/4 ms Analog bus connection Yes

1 DC or AC RMS voltage, channel-to-channel or channel-to-earth

2 At analog bus connector

3 50 Ohm source, 50 Ohm load, differential measurements verified with 4-port network analyzer (Sdd21)

4 Limited to 6 W of channel resistance power loss per module

5 Speeds are with an external DMM with 4-1/2 digits, delay 0, display off, autozero off, and within bank 6 Includes 0.5°C error temperature reference sensor and 0.3°C terminal block isothermal gradient error. See User’s Guide for information on supported external reference sensors. 7 Channel resistance is typically <1.5 Ω but can go as high as 50 Ω if a channel is used in a measurement application with <10 mA load current. Increased relay channel resistance for measurements with load currents below 10 mA can occur on cards that have been out of service or following relay inactivity for periods of greater than 1 week. Switching relays for 2 K cycles prior to use may reduce the variation in channel resistance. Keysight recommends the use of 4-wire Ohms for resistance measurements. For high accuracy voltage measurements, select the DMM input resistance setting of >10 GΩ to minimize the impact of relay contact resistance.

8 DC or Peak AC current

Measurement Accuracy For accuracy measurement specification, combine the DMM offset with the switch offset. Bandwidth of the switch may offset the accuracy of the AC measurement.

Product Specifications (continued) Command Execution Time in msec: GPIB LAN Open or Close 4.7 5.3 Init/*WAI 1.9 3 Close/Init/Open 12.4 14 Scanning rates with external DMM (includes switch, DMM measure time and I/O time with Keysight 34401A, 34410A, 34411A) Scanning channels GPIB ch/s LAN (w/ VXI 11) ch/s Scanning DCV or Ohms 100 100 Scanning ACV 75 75 Scanning temperature 100 100 Scan triggering Source Interval, external, software Scan count 1 to 50,000 or continuous Scan interval 0 to 99 hours; 1 ms step size Channel delay 0 to 60 seconds per channel; 1 ms step size External trig delay < 2ms External trig jitter < 2ms Memory States 5 instrument states with user label in non-volatile memory General system specifications Power supply Universal 100 V to 240 V ±10% Power line frequency 50 Hz to 60 Hz ±10% automatically sensed Power consumption 15VA Operating environment Full accuracy for 0°C to 55°C Full accuracy to 80% R.H. at 40 °C Pollution degree 1 of IEC 61010-1 Storage environment -40°C to 70°C Dimensions (H x W x L) 40.9 x 212.3 x 379.3 mm 1.61 x 8.36 x 14.93 in Weight 3.8 kg, 8.4 lbs Safety conforms to CSA, UL/IEC/EN 61010-1 EMC conforms to IEC/EN 61326-1, CISPR 11 Warranty 3 years

Product Specifications (continued) Software Keysight connectivity Keysight I/O Libraries Suite 14 or greater (E2094N) software included Minimum system requirements PC hardware Intel Pentium 100 MHz, 64 Mbyte RAM, 210 Mbyte disk space Display 800x600, 256 colors, CD-ROM drive Operating system 1 Windows 98 SE/NT/2000/XP Computer interfaces Standard LAN 10BaseT/100BaseTx Optional IEEE 488.2 GPIB Software driver support for programming languages Software drivers IVI-C and IVI-COM for Windows NT/2000/XP LabVIEW Compatible with programming tools and environments Keysight VEE Pro National Instruments TestStand Measurement Studio LabWindows/CVI LabVIEW Switch Executive Microsoft Visual Studio.NET C/C++ Visual Basic 6 1 Load I/O Libraries Version M for Windows NT support or version 14.0 for Windows 98 SE support

Ordering information

L4421A 40-chan armature multiplexer Includes User’s guide on CD, power cord, and Quick Start package Option -GPIB Adds GPIB interface Option 0B0 Deletes printed manual set, full docu- mentation included on CD ROM Option ABA English printed manual set Connection Options Select terminal block for discrete wir- ing, cables or connector kits. Cables and connector kits require 2 per instrument. 34921T Terminal block with temp reference for 34921A and L4421A 40-Ch Multiplexer Y1135A 1.5 m 50-pin Dsub, M/F twisted pair with outer shield cable – 300 V Y1136A 3 m 50-pin Dsub, M/F twisted pair with outer shield cable – 300 V Y1139A Solder cup connector kit with female 50-pin Dsub Other accessories Y1160A Rack mount kit for L4400 series instru- ments racks 2 instruments side-by- side on sliding tray Note: When using the L4400 Series Rack Mount Kit, use the Y1139A sol- der cup connector rather than the 34921T terminal block. 34307A 10-pack of J-type thermocouples 34308A 5-pack of 10 k thermistors Related literature Data sheets 5988-6302EN, Keysight VEE Pro 5989-1439EN, Keysight E2094N I/O Libraries Suite 14

09 | Keysight | L4421A 40-Channel Armature Multiplexer - Data Sheet This information is subject to change without notice. © Keysight Technologies, 2013-2014 Published in USA, August 3, 2014 5989-4825EN www.keysight.com myKeysight www.keysight.com/find/mykeysight A personalized view into the information most relevant to you. www.axiestandard.org AdvancedTCA® Extensions for Instrumentation and Test (AXIe) is an open standard that extends the AdvancedTCA for general purpose and semiconductor test. Keysight is a founding member of the AXIe consortium. www.lxistandard.org LAN eXtensions for Instruments puts the power of Ethernet and the Web inside your test systems. Keysight is a founding member of the LXI consortium. www.pxisa.org PCI eXtensions for Instrumentation (PXI) modular instrumentation delivers a rugged, PC-based high-performance measurement and automation system. Three-Year Warranty www.keysight.com/find/ThreeYearWarranty Keysight’s commitment to superior product quality and lower total cost of ownership. The only test and measurement company with three-year warranty standard on all instruments, worldwide. Keysight Assurance Plans www.keysight.com/find/AssurancePlans Up to five years of protection and no budgetary surprises to ensure your instruments are operating to specification so you can rely on accurate measurements. www.keysight.com/quality Keysight Electronic Measurement Group DEKRA Certified ISO 9001:2008 Quality Management System Keysight Channel Partners www.keysight.com/find/channelpartners Get the best of both worlds: Keysight’s measurement expertise and product breadth, combined with channel partner convenience. www.keysight.com/find/L4421A For more information on Keysight Technologies’ products, applications or services, please contact your local Keysight office. The complete list is available at: www.keysight.com/find/contactus Americas Canada (877) 894 4414 Brazil 55 11 3351 7010 Mexico 001 800 254 2440 United States (800) 829 4444 Asia Pacific Australia 1 800 629 485 China 800 810 0189 Hong Kong 800 938 693 India 1 800 112 929 Japan 0120 (421) 345 Korea 080 769 0800 Malaysia 1 800 888 848 Singapore 1 800 375 8100 Taiwan 0800 047 866 Other AP Countries (65) 6375 8100 Europe & Middle East Austria 0800 001122 Belgium 0800 58580 Finland 0800 523252 France 0805 980333 Germany 0800 6270999 Ireland 1800 832700 Israel 1 809 343051 Italy 800 599100 Luxembourg +32 800 58580 Netherlands 0800 0233200 Russia 8800 5009286 Spain 0800 000154 Sweden 0200 882255 Switzerland 0800 805353 Opt. 1 (DE) Opt. 2 (FR) Opt. 3 (IT) United Kingdom 0800 0260637 For other unlisted countries: www.keysight.com/find/contactus (BP-05-23-14)