51⁄2 Digit Multimeters 51⁄2 Digit Multimeters NI 4050, NI 4060 • 51⁄2-digits • 5 measurement modes • ±300 VDC/Vrms maximum • 200 MΩ maximum (2 and 4-wire) • 60 readings/s maximum Operating Systems • Windows 2000/NT/XP/Me/9x Recommended Software Models • LabVIEW • LabWindows/CVI • Measurement Studio for Visual C++ • NI PCMCIA-4050 • NI PCI-4060 • NI PXI-4060 Other Compatible Software • Visual Basic • C/C++ Driver Software (included) • NI-DMM Calibration Certificate Included See page 21. Overview Measuring Voltages 2 INFO CODES The NI 4050 and NI 4060 DMMs have For more information, five input ranges available for or to order products online visit ni.com/info measuring DC voltages: 20 mV, 200 mV, and enter: 2 V, 25 V, and 250 V. Five input ranges are pxi4060 available for measuring AC voltages: 20 pci4060 mVrms, 200 mVrms, 2 Vrms, 25 Vrms, and pcmcia4050 250 Vrms. The NI 4060 DMMs measure BUY ONLINE! AC voltages to the specified accuracy as long as the voltage is within 10 percent of the selected input range. In AC voltage ranges, the NI 4050 and NI 4060 DMMs measure the AC-coupled True-rms value of a signal. Measuring Resistance Hardware Reading Rates NI 4050 and NI 4060 DMMs offer multiple reading rates determined by your resolution, function, range selections, and powerline rejection. The maximum reading rate is 60 reading/s, once the initial setup time affecting the first reading is passed. Please contact your National Instruments local sales representative for more information regarding measurement performance in your specific application. Family NI 4050 NI 4060 Bus PCMCIA PCI, PXI Accuracy 5 1⁄2 digit 5 1⁄2 digit SCXI Control – ✓ Autozero – ✓ The NI 4050 and NI 4060 DMMs have five basic input ranges for both 2-wire and 4-wire (NI 4060 only) resistance measurements, and an extended range for 2-wire measurements. The basic ranges are 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, and 2 MΩ. With extended range, measurements up to 200 MΩ are possible. The NI 4050 and NI 4060 DMMs use a common technique to measure resistance. The method involves sending a current through the test resistor and measuring the voltage drop across the resistor. In the extended ohms range, a 1 MΩ resistor is added in parallel with the test resistor. Triggering for Scanners – ✓ 4-Wire Resistance Measurement – ✓ Modular Instrumentation The NI 4050 and NI 4060 devices are full-featured digital multimeters (DMMs). They feature accurate 5 1⁄ digit DC voltage and current, True-rms AC voltage and current, and resistance measurements. The PCMCIA-4050, with its size, weight, and low-power consumption, is ideal for portable measurements and data logging with handheld and notebook computers. The NI 4060 DMMs are perfectly suited for use in automated production test, portable field test, and benchtop electronic test. Using the NI 4060 DMMs with National Instruments switching modules, such as PXI-2501, PXI-2503, SCXI-1127, SCXI-1128, or SCXI-1129, you can measure thousands of channels, consisting of voltages, thermocouples, RTDs, thermistors, and current loops, and keep a firm control on the cost of your system. Measuring Current For the PCMCIA-4050, use the optional CSM Series current shunt accessories Table 1. NI 4050 and NI 4060 Channel, Speed, and Resolution Specifications National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.com 463 51⁄2 Digit Multimeters 51⁄2 Digit Multimeters Figure 1. Fundamental DMM Architecture Diode Testing Software The NI 4050 and NI 4060 DMMs measure the forward drop (up to 2 V) across a diode. The diode is biased with 100 µA current, and the resulting voltage drop is measured. Diode measurements are made with a fixed range of 2 V. Driver Software Calibration The NI 4050 and NI 4060 DMMs are shipped with a calibration certificate stating that the instrument was calibrated to NISTtraceable standards to the levels detailed in the specifications. These DMMs can be returned to National Instruments or a qualified metrology lab for calibration. Cables and Probes Modular Instrumentation Front-End Signal Conditioning to measure both AC and DC current. The CSM accessories include a precision resistor that converts the current through the shunt into a voltage measurable by the PCMCIA-4050. For measuring currents up to 200 mA or 10 A, use the CSM-200mA or the CSM-10A, respectively. The NI 4060 DMMs have built-in current measurement capability. Two input ranges exist for DC and True-rms AC current measurements – 20 mA and 200 mA. For measuring currents between 200 mA and 10 A, use the CSM-10A accessory. The NI 4060 DMMs have built-in shrouded banana jacks to prevent exposure to potentially hazardous voltages on the test probes. The DMM kits include the P-1 Probe Set – two 1 m test leads (red and black) with test probes. The P-2 Probe Set, sold separately, includes two 1 m test leads (red and black) with shrouded banana plugs on one end and a variety of optional terminals on the other – two alligator clips (red and black) with boots, two spring hooks (red and black), and two spade connectors (red and black). The banana-plug-to-bare-wire kit is a pair of banana to bare wire plugs (one red, one black) that permits you to connect your DMM to screw terminals for channel expansion via matrices or scanners. To connect your NI 4060 to SCXI scanners and matrices, special cable kits are available (SCXI-1357 and SCXI-1358). Refer to page 507 for more information on switch cabling. The probe sets meet IEC 1010 safety requirements and permit direct probing of circuits and cables. AC Front End A/D Conversion Processor and Display True RMS AC to DC Converter Processor HI Input DC Front End Ohms Front End ADC Memory Software Power Supply Ohms Current Source LO All National Instruments DMMs are shipped with NI-DMM driver software. NI-DMM is an IVI-compliant driver that exports the complete functionality of the DMMs through an easy-to-use application programming interface. You should use this driver if you want to build an automated test application or integrate the NI DMMs into your test software. NI-DMM works with LabVIEW, LabWindows/CVI, Measurement Studio for Visual C++, and Microsoft Visual Basic. Interactive Control Every NI DMM is shipped with the DMM Soft Front Panel (SFP). You can use the DMM SFP to quickly control the DMM without writing a program. The DMM SFP provides access to all hardware features except triggering and scanning. Ordering Information NI PCMCIA-4050 ..................................................777186-01 Includes the PCMCIA-4050 card, P4-BJ2 Cable, P-1 Probe Set, NI-DMM, the DMM Soft Front Panel, carrying case, and calibration certificate. NI PCI-4060 ..........................................................777559-01 NI PXI-4060 ..........................................................777554-01 Includes the NI 4060 hardware, P-1 probe set, NI-DMM, DMM Soft Front Panel, and calibration certificate. For information on extended warranty and value added services, see page 20. Cables and Accessories Triggering for Switches (NI 4060 only) The NI 4060 DMMs work with external multiplexer/matrix switches. In particular, the NI 4060 devices have been designed to integrate seamlessly with National Instruments switch offerings for SCXI and PXI. Two signals, Voltmeter Complete Trigger Output and Trigger Input, control the switches. Access to the signals is through two BNC connectors on the auxiliary trigger cable. On PXI, you can access the triggers through the PXI trigger bus. 464 Standard Probe, P-1 Probe Set ............................761000-01 Additional Probe, P-2 Probe Set ..........................184698-01 Banana plug to bare wire, P-3 Probe Set 1 m, red and black (2 wires) ............................185692-01 Auxiliary trigger cable for use with external multiplexers 0.5 m ........................................184931-0R5 10 A current shunt, CSM-10A ..............................777488-02 Visit ni.com for a more complete list of cables and accessories. National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.com 51⁄2 Digit Multimeters Specifications are guaranteed between 15 and 35 °C unless otherwise noted. AC Current (Accuracy % of reading ± mA) DC Voltage (Accuracy % of reading ± µV) 24 Hour Range (25 °C ± 1 °C) 250.000 V 0.0032% + 1.25 mV 25.0000 V 0.0032% + 1 mV 2.00000 V 0.0029% + 10 µV 200.000 mV 0.0029% + 6 µV 20.0000 mV 0.0029% + 6 µV 90 Day (25 °C ± 10 °C) 0.021% + 1.25 mV 0.021% + 1 mV 0.014% + 10 µV 0.014% + 6 µV 0.014% + 6 µV 1 Year (25 °C ± 10 °C) 0.024% + 1.25 mV 0.024% + 1 mV 0.017% + 10 µV 0.017% + 6 µV 0.017% + 6 µV Temperature Coefficient (% of reading/°C + µV/°C) 0.0017%/°C + 480 µV/°C 0.0017%/°C + 480 µV/°C 0.0009%/°C + 5 µV/°C 0.0009%/°C + 1 µV/°C 0.0009%/°C + 1 µV/°C Range 20.0000 mA 200.000 mA 10.0000 A* 24 Hour (25 °C ± 1 °C) 0.30% + 100 µA 0.18% + 0.22 mA 0.3% + 22 mA 90 Day (25 °C ± 10 °C) 0.32% + 170 µA 0.20% + 1.2 mA 0.32% + 120 mA 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C ± mA/°C) 0.32% + 170 µA 0.022%/°C + 12 µA/°C 0.20% + 1.2 mA 0.009%/°C + 0.110 mA/°C 0.32% + 120 mA 0.026%/°C + 11 mA/°C *Requires 10 A shunt, CSM-10A Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Accuracy numbers are for 5 1⁄2 digits with autozero on and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Overrange capabilities to 300 V. Input Characteristics Noise Rejection Resistance (Accuracy % of reading ± Ω) NMRR ........................................................ 80 dB (10 Hz filter setting, 50/60 Hz powerline frequency ±1%) DC ECMRR ................................................ 140 dB (with a 1 kΩ imbalance in HI lead) AC ECMR (50/60 Hz) ................................. 150 dB (with a 1 kΩ imbalance in HI lead) Input Characteristics Input bias current....................................... 1 nA maximum Input resistance ......................................... >1 GΩ (2 V, 200 mV, 20 mV ranges); 1 MΩ (250 V, 25 V) DC Current (Accuracy % of reading ± µA) Range 20.0000 mA 200.000 mA 10.0000 A* 24 Hour (25 °C ± 1 °C) 0.015% + 10 µA 0.015% + 10 µA 0.02% + 1 mA 90 Day (25 °C ± 10 °C) 0.039% + 10 µA 0.039% + 10 µA 0.035% + 2 mA 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C + µA/°C) 0.042% + 10 µA 0.0035%/°C + 1 µA/°C 0.042% + 10 µA 0.0035%/°C + 1 µA/°C 0.035% + 2 mA 0.007%/°C + 0.1 mA/°C *Requires 10 A shunt, CSM-10A Accuracy numbers are for 5 1⁄2 digits with autozero on and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Input Characteristics AC Voltage (Accuracy % of reading ± mV) Range 250.000 V 25.0000 V 2.00000 V 200.000 mV 20.0000 mV 24 Hour (25 °C ± 1 °C) 0.6% + 250 mV 0.16% + 30 mV 0.28% + 3 mV 0.16% + 0.22 mV 0.28% + 100 µV 90 Day (25 °C ± 10° C) 0.62% + 680 mV 0.18% + 210 mV 0.30% + 21 mV 0.18% + 1.20 mV 0.30% + 170 µV 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C + mV/°C) 0.62% + 680 mV 0.007%/°C + 20 mV/°C 0.18% + 210 mV 0.007%/°C + 20 mV/°C 0.30% + 21 mV 0.019%/°C + 2 mV/°C 0.18% + 1.20 mV 0.007%/°C + 0.110 mV/°C 0.30% + 170 µV 0.019%/°C + 12 µV/°C Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Applies for sine waves ≥ 10% of input range. Accuracy may be affected by source impedance, cable capacitances, dielectric absorption, or slew rate. Overrange capabilities to 300 V. Noise Rejection AC CMRR (50/60 Hz) ................................ >80 dB (with a 1 kΩ imbalance in HI lead) Input Characteristics Input resistance ......................................... 1 MΩ Bandwidth.................................................. 20 Hz - 25 kHz Additional AC Errors Frequency dependent errors Input Frequency Additional Error (% of reading) 20 Hz - 50 Hz 2.5% 50 Hz - 100 Hz 0% 100 Hz - 20 kHz 1% 20 Hz - 25 kHz 2.5% Input protection ......................................... Fuse F1 500 mA/250 V fast-fusing Shunt resistor ............................................ 1 Ω Burden voltage........................................... < 400 mV at 200 mA AC Range Extended ohm (> 2 MΩ) 2.00000 MΩ* 200.000 kΩ 20.0000 kΩ 2.00000 kΩ 200.000 Ω 24 Hour (25 °C ± 1 °C) 90 Day (25 °C ± 10 °C) 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C + Ω/°C) 0.1% + 6 kΩ 0.012% + 9 Ω 0.012% + 5 Ω 0.006% + 0.09 Ω 0.006% + 0.05 Ω 0.006% + 0.05 Ω 0.1% + 60 kΩ 0.077% + 27 Ω 0.077% + 22 Ω 0.024% + 0.3 Ω 0.024% + 0.2 Ω 0.024% + 0.2 Ω 0.1% + 60 kΩ 0.080% + 27 Ω 0.080% + 22 Ω 0.027% + 0.3 Ω 0.027% + 0.2 Ω 0.027% + 0.2 Ω 0.0072%/°C + 6 kΩ/°C 0.0072%/°C + 2 Ω/°C 0.0072%/°C + 2 Ω/°C 0.0020%/°C + 0.02 Ω/°C 0.0020%/°C + 0.02 Ω/°C 0.0020%/°C + 0.02 Ω/°C *With autozero on, or while scanning, and when large resistance with capacitive loads is measured, additional delay time is required. Accuracy numbers are for 4-wire resistance mode, 5 1⁄2 digits with autozero on and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Measurement modes Ohms.................................................... 2 or 4-wire Extended ohms .................................... 2-wire only Maximum lead resistance.......................... 10 Ω (200 Ω range), 1 kΩ (all other ranges) Additional error for 2-wire resistance ........ 0.6 Ω Diode Testing (Accuracy % of reading ± µV) Range 2V 24 Hour (25 °C ± 1 °C) 0.006% + 7 µV 90 Day (25 °C ± 10 °C) 0.024% + 22 µV 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C + µV/°C) 0.027% + 22 µV 0.0020%/°C + 2 µV/°C Accuracy numbers are for 5 1⁄2 digits with autozero on and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Test current................................................ 100 µA General Specifications Settling time .............................................. Affected by source impedance and input signal changes. Warm-up time ............................................ 30 minutes for measurements accurate within specifications. Altitude....................................................... Up to 2,000 m; at higher altitudes the installation category must be derated. Working voltage ......................................... 300 V maximum between either input terminal and earth ground Modular Instrumentation Input protection ......................................... Fuse F1 500 mA/250 V fast-fusing Shunt resistor ............................................ 1 Ω Burden voltage........................................... <400 mV at 200 mA DC 51⁄2 Digit Multimeters Specifications – NI 4060 Power Requirement +5 VDC ...................................................... 250 mA in operational mode Physical Dimensions PCI ........................................................ 10.8 by 17.5 cm (4.25 by 6.9 in.) PXI ........................................................ 10 by 16 cm (3.9 by 6.33 in.) Environment Operating temperature .............................. 0 to 55 °C Storage temperature.................................. -20 to 70 °C Relative humidity ....................................... 10 to 90%, noncondensing Certifications and Compliances CE Mark Compliance National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.com 465 51⁄2 Digit Multimeters 51⁄2 Digit Multimeters Specifications – PCMCIA-4050 DC Voltage (Accuracy = % of reading ± µV) Range 24 Hour (25 °C ± 1 °C) 250.000 V 0.0032% + 4.9 mV 25.0000 V 0.0032% + 4.9 mV 2.00000 V 0.0029% + 37 µV 200.000 mV 0.0029% + 27 µV 20.0000 mV 0.0029% + 27 µV 90 Day (25 °C ± 10 °C) 0.021% + 49 mV 0.021% + 49 mV 0.014% + 260 µV 0.014% + 250 µV 0.014% + 250 µV 1 Year (25 °C ± 10 °C) 0.024% + 49 mV 0.024% + 49 mV 0.017% + 260 µV 0.017% + 250 µV 0.017% + 250 µV AC Current (Accuracy = % of reading ± mA) Temperature Coefficient (% of reading/°C + µV/°C) 0.0017%/°C + 4800 µV/°C 0.0017%/°C + 4800 µV/°C 0.0009%/°C + 25 µV/°C 0.0009%/°C + 25 µV/°C 0.0009%/°C + 25 µV/°C Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Noise Rejection NMRR ........................................................ 80 dB (10 Hz reading rate, 50/60 Hz powerline frequency ±1%) DC ECMRR........................................................ 140 dB (with a 1 kΩ imbalance in LO lead) AC ECMR (50/60 Hz) ........................................ 150 dB (with a 1 kΩ imbalance in LO lead) Input Characteristics Input bias current....................................... 1 nA maximum Input resistance ......................................... >1 GΩ (2 V, 200 mV, 20 mV ranges); 1 MΩ (250 V, 25 V) DC Current (Accuracy = % of reading ± µA) Range 20.0000 mA 200.000 mA 10.0000 A* 24 Hour (25 °C ± 1 °C) 0.1% + 27 µA 0.1% + 27 µA 0.02% + 4 mA 90 Day (25 °C ± 10 °C) 0.14% + 250 µA 0.14% + 250 µA 0.035% + 26 mA Modular Instrumentation Input Characteristics Range 24 Hour (25 °C ± 1 °C) 250.000 V 0.6% + 500 mV 25.0000 V 0.3% + 30 mV 2.00000 V 0.4% + 3 mV 200.000 mV 0.3% + 0.22 mV 20.0000 mV 0.4% + 100 µV 90 Day (25 °C ± 10 °C) 0.62% + 680 mV 0.32% + 210 mV 0.42% + 21 mV 0.32% + 1.2 mV ∫0.42% + 170 µV Fuse F1 500 mA/250 V fast-fusing 1Ω <400 mV at 200 mA Fuse F1 12.5 A/250 V fast-fusing 10 mΩ <300 mV at 10 A 1 Year (25 °C ± 10 °C) 0.62% + 680 mV 0.32% + 210 mV 0.42% + 21 mV 0.32% + 1.2 mV 0.42% + 170 µV Temperature Coefficient (% of reading/°C ± mV/°C) 0.007%/°C + 20 mV/°C 0.007%/°C + 20 mV/°C 0.019%/°C + 2 mV/°C 0.007%/°C + 0.110 mV/°C 0.019%/°C + 12 µV/°C AC Voltage (Accuracy = % of reading ± mV) Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Noise Rejection Input Characteristics Input resistance ......................................... 1 MΩ all ranges Bandwidth.................................................. 20 Hz - 25 kHz Additional AC Errors Temperature Coefficient (% of reading/°C + mA/°C) 0.019% /°C + 0.120 mA/°C 0.007%/°C + 12 µA/°C 0.026%/°C + 11 mA/°C *Requires 10 A shunt, CSM-10A. Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero scale errors, temperature variation, linearity, and noise. Input Characteristics 200 mA Shunt Input protection .................................... Shunt resistor ....................................... Burden voltage ..................................... 10 A Shunt Input protection .................................... Shunt resistor ....................................... Burden voltage ..................................... Fuse F1 500 mA/250 V fast-fusing 1Ω <400 mV at 200 mA Fuse F1 12.5 A/250 V fast-fusing 10 mΩ <300 mV at 10 A Resistance (Accuracy = % of reading ± Ω) Extended ohm (> 2 MΩ) 2.00000 MΩ 200.000 kΩ 20.0000 kΩ 2.00000 kΩ 200.000 Ω 24 Hour (25 °C ± 1 °C) 0.1% + 6 kΩ 90 Day (25 °C ± 10 °C) 0.1% + 60 kΩ 1 Year (25 °C ± 10 °C) 0.1% + 60 kΩ Temperature Coefficient (% of reading/°C ± Ω/°C) 0.0072%/°C + 6 kΩ/°C 0.012% + 55 Ω 0.012% + 37 Ω 0.006% + 0.5 Ω 0.006% + 0.4 Ω 0.006% + 0.4 Ω 0.077% + 370 Ω 0.077% + 350 Ω 0.024% + 4 Ω 0.024% + 4 Ω 0.024% + 4 Ω 0.080% + 20 Ω 0.080% + 2 Ω 0.027% + 4 Ω 0.027% + 4 Ω 0.027% + 4 Ω 0.0072%/°C + 35 Ω/°C 0.0072%/°C + 35 Ω/°C 0.0020%/°C + 0.40 Ω/°C 0.0020%/°C + 0.40 Ω/°C 0.0020%/°C + 0.40 Ω/°C Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity and noise. Measurement modes ................................ 2-wire Diode Testing (Accuracy = % of reading ± µV) Range 2V 24 Hour (25 °C ± 1 °C) 0.006% + 60 µV 90 Day 1 Year Temperature Coefficient (25 °C ± 10 °C) (25 °C ± 10 °C) (% of reading/°C ± µV/°C) 0.024% + 400 µV 0.027% + 400 µV 0.002%/°C + 40 µV/°C Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero-scale errors, temperature variation, linearity, and noise. Test current................................................ 100 µA General Specifications Settling time .............................................. Affected by source impedance and input signal changes Warm-up time ............................................ 30 minutes for measurements accurate within specifications Altitude....................................................... Up to 2,000 m; at higher altitudes the installation category must be derated Working voltage ......................................... 250 V maximum between either input terminal and earth ground Power Requirement Additional Error (% of reading) 2.5% 1.0% 0.0% 1.0% 2.5% Environment Operating temperature .............................. 0 to 55 °C Storage temperature.................................. -20 to 70 °C Relative humidity ....................................... 10 to 90%, noncondensing Certifications and Compliances CE Mark Compliance The product meets applicable EU directives for CE Mark compliance as follows: Safety compliance IEC 1010-1 Certified, Designed for UL 3111, Low-Voltage Directive EN 61010-1, Installation Category II, Pollution Degree 2, Double Insulated, Indoor use. Frequency dependent errors 466 90 Day 1 Year (25 °C ± 10 °C) (25 °C ± 10 °C) 0.37% + 170 µA 0.37% + 170 µA 0.47% + 1.2 mA 0.47% + 1.2 mA 0.32% + 120 mA 0.32% + 120 mA +5 VDC ...................................................... 45 mA in operational mode AC CMRR (DC to 60 Hz)..................................... >80 dB (with a 1 kΩ imbalance in LO lead) Input Frequency 20 Hz - 50 Hz 50 Hz - 100 Hz 100 Hz - 5 kHz 5 Hz - 10 kHz 10 Hz - 25 kHz 24 Hour (25 °C ± 1 °C) 20.0000 mA 0.35% + 110 µA 200.000 mA 0.45% + 0.22 mA 10.0000 A* 0.3% + 22 mA Range 1 Year Temperature Coefficient (25 °C ± 10 °C) (% of reading/°C ± µA/°C) 0.15% + 250 µA 0.0035%/°C + 25 µA/°C 0.15% + 250 µA 0.0035%/°C + 25 µA/°C 0.035% + 26 mA 0.007%/°C + 2.5 mA/°C *Requires 10 A shunt, CSM-10A. Accuracy numbers are for 5 1⁄2 digits and include the effects of full and zero scale errors, temperature variation, linearity, and noise. 200 mA Shunt Input protection .................................... Shunt resistor ....................................... Burden voltage ..................................... 10 A Shunt Input protection .................................... Shunt resistor ....................................... Burden voltage ..................................... Range National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • [email protected] • ni.com