DMM7512

Datasheet DMM7512 Dual Channel 7½-Digit Sampling Multimeter A Tektronix Company Key Features • Two high-precision, 7½-digit DMMs in a 1U high, full rack width chassis • No space requirements between instruments minimizes rack space • Capture waveforms or identify transients with two 1 Msample/s 18-bit digitizers • Trigger a waveform measurement on a signal level, a rising or falling edge, a window, or a digital trigger • Store up to 27.5M timestamped readings on a waveform • Basic one-year DC Voltage accuracy as low as 14 ppm • 10 nV, 0.1 µΩ, and 1 pA sensitivities for making high resolution low level measurements such as measurements of portable device sleep currents • High accuracy, low resistance measurements with offset compensated ohms, four-wire measurement, and dry circuit functions • Auto-calibration improves accuracy and stability by minimizing temperature and time drift • USBTMC-compliant and LAN LXI-compliant interfaces • Reduce test time by executing test scripts with the Embedded Test Script Processor, which saves PC command communication overhead • Tight synchronization between the two DMMs using TSP-Link® communication • Reduce life cycle costs with a two-year calibration interval The DMM7512 Dual Channel 7½-digit Sampling Multimeter combines two full-function, high accuracy and high sampling speed DMMs into a compact 1U high, full rack wide form factor chassis. The compact chassis saves rack space in high-instrument density, test systems. The small size does not compromise measurement performance. Each DMM has identical functionality, and both are entirely independent of each other. The DMMs achieve a basic, one-year accuracy as low as 14 ppm for DC volts, 24 ppm for resistance, and 60 ppm for DC current. Sensitivities of 10 nV, 0.1 µΩ, and 1 pA ensure high quality, high resolution measurements on very small signals. In addition, each DMM has a wide range of functionality including voltage digitizing, current digitizing, and temperature measurements with resistance temperature detectors (RTDs), thermistors, and thermocouples. With dual channel capability, fast signal sampling, high speed data transfer rates reaching up to 100,000 measurements/s, and internal execution of program test scripts, the DMM7512 reduces space and reduces test time in automated test systems. Capture Low Level Waveforms with the 1 Msample/s Digitizer Avoid the need for a separate instrument to capture waveform parameters or ensure a waveform is within design limits by using the digitizing function. Digitize either voltage or current and sample a waveform at a rate of up to 1 Msamples/s with the 18-bit digitizer. The digitizing function employs the same ranges that the DC voltage and DC current functions use to deliver exceptional dynamic measurement range. With the digitizer’s 1 µV and 0.1 nA sensitivities, the DMM7512 is the best solution for measuring low level waveforms such as wireless IoT battery current profiles and laser diode current consumption profiles. Using the digitizing function, the two DMMs can measure the current in all the operating states of a device including the sleep state and the current burst state when the device is transmitting. By using the two DMMs as synchronized digitizers, one for voltage and one for current, power can be accurately computed on timevarying waveforms. Datasheet DMM7512 Front Panel Shows the two DMM’s multiple, communication interfaces. LAN Reset Digital I/O LAN Status LAN STATUS TSP-Link MOD 1 MAC ADDRESS Power Switch and Indicator USB Type A R LAN RESET MAC ADDRESS SERIAL NO. DMM7512 Rear Panel USB Type B TSP-Link MOD 2 SYSTEM TSP-Link LAN STATUS DMM7512 7 1/2 DIGIT MULTIMETER LAN DIGITAL I/O R LAN DIGITAL I/O LAN RESET 10 Base T/ 100 Base T with LXI, LAN Shows the identical measurement inputs for DMM 1 and DMM 2. Externally Accessible Input Current Fuse LINE RATING INPUT CAT II 300V MAX. SENSE 4 WIRE HI 1000V PK 350V PK LO 500V PK CAT II 300V MAX. AMPS 3A, 250V MOD 2 Input and Sense Terminals SENSE 4 WIRE MOD 2 INPUT FUSE FAST ACTING 11A, 1000V EXT TRIG IN/OUT SERIAL NO. External Trigger Input/Output Optimized to Maximize Throughput In addition to the high-speed sampling and fast integrating measurement modes, each of the DMM7512’s DMMs utilize Keithley’s powerful Test Script Processor (TSP®) technology. This embedded scripting capability enables each DMM to run powerful test scripts directly on the instrument without external PC interaction. These test scripts are complete test programs based on an easy-touse, yet highly efficient and compact scripting language, Lua (www.lua.org). Scripts include instrument control commands and program statements. Program statements control script execution and include typical programming language features such as variables, functions, branching, and loop control. A test script can execute a complete TEK.COM HI 1000V PK 350V PK LO 500V PK LINE FUSE SLOWBLOW 3.15A, 250V AMPS 3A, 250V MOD 1 ! MOD 1 INPUT FUSE FAST ACTING 11A, 1000V EXT TRIG IN/OUT SERIAL NO. Chassis Ground The digitizers can trigger on either the slope, a level, or a window of an input waveform. The digitizers can also trigger on digital control signals such as external, hardware trigger inputs and software trigger commands. Each digitizer function provides oscilloscope-like performance with excellent sensitivity, high resolution, and a fast sampling rate. 2 100-240VAC 50, 60Hz 165VA MAX. INPUT test including performing specialized computations and making decisions on results without having to receive and decode individual commands from a controller. This saves significant test time by eliminating a substantial amount of interface communication time. TSP technology also offers instrument-to-instrument communication and control through the TSP-Link® channel expansion bus. The DMMs in the DMM7512 can communicate with each other and with other TSP-enabled instruments, such as the 4-channel 2606B System SourceMeter® Source Measure Unit (SMU) Instrument, in a master-subordinate configuration so that all instruments operate as a single, integrated system controlled by a TSP script in the master instrument. TSP-Link supports up to 32 instruments per IP address, so a system can be easily scaled for any test system requirements. In addition to communicating with and controlling TSPenabled instruments, any instrument with a LAN interface can be controlled by a TSP-embedded test script using the TSP-Net communication facility. DMM7512 Dual Channel 7½-Digit Sampling Multimeter Test Script • Conditional branching • Advanced calculations and flow control • Variables • Pass/fail test • Prober/handler control • Datalogging/ formatting LAN STATUS TSP-Link MOD 1 MAC ADDRESS R DIGITAL I/O DUT 1 LAN STATUS DMM7512 7 1/2 DIGIT MULTIMETER LAN TSP-Link MOD 2 SYSTEM LAN RESET Use the Virtual Front Panel for Test Setup or Manual Measurements MAC ADDRESS SERIAL NO. R DUT 2 LAN DIGITAL I/O LAN RESET Embedded TSP test scripts execute complete test programs and reduce test time. PC DUT 1 LAN LAN STATUS TSP-Link MOD 1 MAC ADDRESS R DIGITAL I/O LAN SYSTEM LAN RESET LAN STATUS DMM7512 7 1/2 DIGIT MULTIMETER SERIAL NO. MOD 2 MAC ADDRESS TSP-Link R TSP-Link R DIGITAL I/O LAN Even though the DMM7512 does not have a front panel display, the instrument has a built-in web browser with a virtual front panel. Through a LAN interface connection, the virtual front panel can be displayed on a PC monitor. With the virtual front panel, each DMM of the DMM7512 can be controlled using either the PC touchscreen display or mouse and keyboard controls. All the functionality of each DMM can be accessed through the virtual front panel. Thus manual operation and test setup can be performed as easily as if the instrument had a physical front panel. DUT 2 LAN RESET TSP-Link LAN STATUS TSP-Link MOD 1 MAC ADDRESS R DIGITAL I/O LAN STATUS DMM7512 7 1/2 DIGIT MULTIMETER LAN SYSTEM LAN RESET SERIAL NO. MOD 2 MAC ADDRESS DIGITAL I/O LAN DUT 3 LAN RESET DUT 4 A test script can control multiple instruments through the TSP-Link interface. Measurements between all DMMs can be synchronized with a latency of under 500 ns. The DMM7512 virtual front panel displays a conventional DMM front panel. Use the virtual front panel to obtain a full screen display of a waveform. Apply cursors and statistics for waveform analysis. Simultaneously stimulate and measure multiple DUTs with the compact, high density, configuration of the dual-DMM DMM7512 and the four-channel 2606B System SourceMeter SMU Instrument. TEK.COM 3 Datasheet Specification Conditions This document contains specifications and supplemental information for the DMM7512 7½ Digit Graphical Sampling Multimeter instrument. Specifications are the standards against which the DMM7512 is tested. Upon leaving the factory, the DMM7512 meets these specifications. Supplemental and typical values are nonwarranted, apply at 23 °C, and are provided solely as useful information. Measurement accuracies are specified at the DMM7512 terminals under these conditions: • Temperature 23 °C ±5 °C, 5% to 80 60% relative humidity, noncondensing • After a 4-hour warmup period • 1 PLC or 5 PLC; for NPLC settings less than 1 PLC, add appropriate ppm of range for peak noise uncertainty from the RMS noise table • Autozero enabled unless otherwise noted • Remote sense operation or properly zeroed local operation • Calibration period: One year or two years (calibration period may vary depending on customer requirements) • TACAL = Ambient temperature of last automatic calibration • TCAL = Ambient temperature of last external calibration; factory calibration performed at 23 °C ±1 °C DC Voltage Accuracy (Input impedance auto) Accuracy ±(ppm of reading + ppm of range) Input Impedance 24 hour TCAL ±1 °C 2 90 day TCAL ±5 °C 1 year TCAL ±5 °C 2 year TCAL ±5 °C Temperature Coefficient 3 Range 1 Resolution 100.00000 mV 4 10 nV > 10 GΩ or 10 MΩ ±1% 6 + 30 12 + 30 18 + 30 29 + 30 0.1 + 2.5 1.0000000 V 4 100 nV > 10 GΩ or 10 MΩ ±1% 4+2 9+5 15 + 5 26 + 5 0.1 + 0.5 10.000000 V 4 1 µV > 10 GΩ or 10 MΩ ±1% 2 + 0.7 9 + 1.2 14 + 1.2 22 + 1.2 0.1 + 0.05 100.00000 V 4 10 µV 10 MΩ ±1% 8+6 (18 + 15) 5 (22 + 15) 5 (30 + 15) 5 (0.15 + 0.1) 5 1000.0000 V 4, 6 100 µV 10 MΩ ±1% 8+6 35 + 15 40 + 15 45 + 15 2.0 + 1 (19 + 10) 5 (23 + 10) 5 (31 + 10) 5 (0.15 + 0.1) 5 35 + 10 40 + 10 45 + 8 2.0 + 1 NOTES 1. 2. 3. 4. 5. 6. 4 20% overrange on all ranges except 1% for 1000 V range. Relative to calibration accuracy. Add per degree from TCAL ± 5 °C. When properly zeroed using the Rel function with external cables. Specified within 30 days of autocalibration, TOPER ± 5 °C from TACAL. For signal levels greater than 500 V, add 0.02 ppm/V to the ppm of the readings specification for measurements exceeding 500 V. TEK.COM DMM7512 Dual Channel 7½-Digit Sampling Multimeter RMS NOISE (ADDITIONAL PEAK NOISE UNCERTAINTY) 7 Applies to ±ppm of range. Peak noise uncertainty is included in DC specifications for ≥1 PLC. Add peak noise uncertainty to measurements for 10 GΩ ||