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Refurbished And Calibrated, Lab-Quality With Front- And Rear-Panel Connections And HP-IB Interface The HP-3457A is an advanced technology, lab-quality multimeter with many sophisticated features, 6-1/2 digit LCD display, in a lightweight, compact housing. This very versatile instrument is at home on the workbench or in an automated testing environment using the built-in HP-IB interface. The HP-3457A will measure AC voltage and current, DC voltage and current, AC + DC volts and current, 2- and 4-wire ohms, frequency and period. This outstanding meter is capable of 0.10-nanovolt resolution, with maximum voltage readings of 300V (AC or DC; max input level 450V). Ohms from 10 micro-ohms to 3.03 G-Ohm (3030-MOhms) can be measured. Current measurements can be as low as 100-pA to 1A maximum (fused at 1-1/2 Amps). Typical accuracy (on three-volt range) is ± 0.00035%, +5 counts over a 24-hour period at 23°C ± 1°C. If you need very high accuracy, sophisticated multimeter capable of taking automatic readings at over 1000 samples per second consider the HP-3457A. Completely Refurbished and Calibrated. New Lithium Backup Battery (Retains Calibration-Constants) Like-New Internals and Excellent Cosmetic Condition. Complete Calibration And Performance Validation, System Burn-In for 48 hours. Includes Extensive User & Service Manuals on CD and 30-Day Warranty. HP-3457A Instrument Specifications: * Microprocessor based (enhanced MC6800 @ 2Mhz) with 16-bit address bus and 8-bit data bus, fully guarded, integrating Digital Multimeter is designed for bench use or with automatic testing systems. * Measures DC, true RMS AC Voltage, AC current, DC current, AC + DC voltage and current, 2 and 4-Wire Resistance, Frequency and Period. Displays up to 6-1/2 digits (7-1/2 digits of precision are available through the Extra Resolution math function). * Up to 1350 readings per second. * Input resistance is 10 GOhms on 30mV through 3-Volt ranges; 10 MOhms on 30-Volt through 300-Volt ranges (+/- 1%). * Accuracy on three-Volt range is ± 0.00035%, +5 counts over a 24-hour period at 23°C ± 1°C. * 10 micro-ohm to 3.03 G-Ohm resistance measurement capability; Offset compensated ohms (O-C Ω) * Five full-scale, true RMS AC voltage ranges are provided that are capable of resolving signals from 20 HZ to 1MHz. Best accuracy is 0.07%. Crest factor is 3.5 to 1 at full scale. * Thirteen built-in Math Functions, including: Null, Scale, Percent, dB, dBm, Filter, Thermistor (F), Thermistor (C), Statistics, Pass/Fail, and Extra Resolution (with Extra Resolution 7.5 digits of resolution are possible using register reads; best performed with HP-IB and external processing; consider our easy-to-program, refurbished HP-85 computers that can interface with this multimeter). Size: H 89mm, W 425mm, D 292 mm (H 3-1/2 x W 16-3/4 x D 11-1/2 inches); Weight: 5.05 kg (11.1 pounds) Power Requirements: 100/120/240 volts +/-10%, 48Hz to 66Hz, 30 VA maximum. Warm-Up Time: One hour to meet all rated specifications. * HP-3457A Specification Details DC Voltage __________________________________________________ Max Reading - Resolution - Input Input Range (6-1/2 digit) 6-1/2 digit 5-1/2 digit 4-1/2 digit Resistance Voltage 30mV 30.30000 mV 10 nV 100 nV 1 uV 10GOhms ± 450V 300mV 303.0000 mV 100 nV 1 uV 10 uV 10GOhms peak 3V 3.030000 V 1 uV 10 uV 100 uV 10GOhms 30V 30.30000 V 10 uV 100 uV 1 mV 10 MOhms ± 1% 300V 303.0000 V 100 uV 1 mV 10 mV 10 MOhms ± 1% AC True RMS Voltage_________________________________________ Max Reading - Resolution - Input Input Range (6-1/2 digit) 6-1/2 digit 5-1/2 digit 4-1/2 digit Impedance Voltage 30mV 32.50000 mV 10 nV 100 nV 1 uV 1 MOhm/<90pf ± 450V 300mV 325.0000 mV 100 nV 1 uV 10 uV 1 MOhm/<90pf peak 3V 3.250000 V 1 uV 10 uV 100 uV 1 MOhm/<90pfs 30V 32.50000 V 10 uV 100 uV 1 mV 1 MOhm/<90pf 300V 303.0000 V 100 uV 1 mV 10 mV 1 MOhm/<90pf Crest factor: > 3.5:1 at full scale Common mode rejection (1 kOhms imbalance in LO Lead): > 76 dB DC to 60 Hz Resistance (2-Wire Ohms, 4-Wire Ohms)______________________________ Max Reading - Resolution - Current Max Max Open Range (6 1/2 digit) 6 1/2 digit 5 1/2 digit 4 1/2 digit Volt Voltage 30 30.30000 10uOhm 100uOhm 1mOhm 1 mA +/-350 12 V 300 303.0000 100uOhm 1mOhm 10mOhm 1 mA +/-350 12 V 3 k 3.030000 1mOhm 10mOhm 100mOhm 1 mA +/-350 12 V 30 k 30.30000 10mOhm 100mOhm 1 Ohm 100 uA +/-350 12 V 300 k 303.0000 100mOhm 1 Ohm 10 Ohm 10 uA +/-350 12 V 3 M 3.030000 1 Ohm 10 Ohm 100 Ohm 1 uA +/-350 8.5 V 30 M 30.30000 10 Ohm 100 Ohm 1 KOhm 100 uA +/-350 8.5 V 300 M 303.0000 100 Ohm 1 KOhm 10 KOhm 100 uA (1) +/-350 8.5 V 3 G 3.030000 1KOhm 10KOhm 100KOhm 100 uA (1) +/-350 8.5 V (1) Ohms source is a 100 nA current source in parallel with a 10 MOhm resistance Math Functions________________________________________________ Thirteen Built-In Math Functions, Including: Null, Scale, Percent, dB, dBm, Filter, Thermistor (F), Thermistor (C), Statistics, Pass/Fail, and Extra Resolution (to 7.5 digits). Memory______________________________________________________ Reading Storage, Subprogram Storage, State Storage: All share 2208 bytes. Can be allocated to each of the three memory areas as needs require. Reading read: Readings can be recalled through HP-IB interface or from front panel. Memory size: Total memory size 2208 bytes. 1 byte per ASCII character stored plus 4 bytes per reading stored. The HP-3457A is capable of post-processing measurements with up to thirteen Math functions, including Extended Resolution that allows resolving up to 7-1/2 digit readings. Another powerful feature of this instrument is the built-in, user-accessible Auto-Calibration routines that maintain optimum accuracy; just press a couple of front-panel buttons to perform Auto-Calibrations. The HP-3457A has both front and rear terminal connections that can be used to measure 2- and 4-Wire Ohms, Voltage, Current, Frequency and perform Reference Measurements between two sources. Front and rear input is easily selected from the front panel or through HP-IB. The HP-IB interface is located at the right of the rear panel. The HP-3457A does not need a cooling fan, so the instrument is quiet and pleasure to use. This HP-3457A is even equipped with new, quality, screw-on rubber feet (no stick-ons!) to keep it your multimeter from sliding around during testing. A similar instrumentation setup was used to calibrate this HP-3457A. Calibration requires several hundred steps and more than 1000 operator inputs. Needless to say, this can take several hours for a technician to complete and is susceptible to human error. By using an HP-85 and our custom calibration software, we ensure that each step is performed in the right sequence and with the correct calibration inputs. In addition, the HP-85 provides a permanent printed record of the process. This HP-3457A is fully refurbished, 100% operational, and comes with a 30-day warranty against malfunctions. Unit includes HP-IB (GP-IB) and front and rear terminal connections. Complete with HP User & Service Manuals on CD. Unit is in excellent electronic and cosmetic condition. This item is guaranteed to meet the descriptions provided. If you receive the item and you feel it does not work properly or match our descriptions, let us know and we will make every attempt to correct the problem, including—if necessary—providing a full refund.. All items won by California residents will be subject to 7.75% sales tax. If you are a reseller, you can mail or fax your reseller certificate to (***) 283-3130 to wave sales tax on this and future purchases. Returns: If you receive defective, damaged, or DOA merchandise, you have 5 business days to notify us of this situation. After 5 days, a refund or other corrective action WILL NOT BE POSSIBLE. Thank you for visiting our action. (Hp-3457A lab-quality multimeter, refurbished calibrated is the responsibility of Daniel Forbes) |
d_forbes@cedar--rapids.com (Daniel Forbes) for more information.
