Text version of the page

280 Charged Plate Monitor Specifications Programmable tests and data storage

Charging ±10 to ±1000 volts differential adjustable The Model 280 can be easily programmed to perform a seriesoftests.Measurements include discharge time negative,dis- charge time positive,offset voltage and swing.Multiple meas- urements ofany or all ofthe parameters can be automatically recorded at each location.A programmable “measure pause interval”allows the user to walk away from the instrumentbefore the measurement begins,allowing automated settlingtime.Results can be recorded for each location and then downloaded to the computer as a complete report for analysis, archiving and graphing.The charge plate is detachable and has a variety ofmountingoptions and sensor sizes,allowing for flexibility and ease-of-use in a variety ofenvironments,including mini-environments. The Model 280 uses a contacting electrometer measurementtechnique,providing improved instrument stability,particularly when making offset voltage measurements at the low levels required for today’s smallest electronic devices (e.g.MR heads).Although this instrument configuration is not yet included in ANSI EOS/ESD S3.1-1991,the advanced instrument design makes all the measurements described to standard but, with improved stability over conventional designs. Additionally,it allows low-level,long-term,drift-free measure- ments that are not possible with the older non-contacting fieldmeter test method ofthe ESD Association standard. Voltage 10 volts to 100 volt in 1 volt increments Zero Stability <100 mV/sec Timer 0.1 to 999.9 seconds in 0.1 second increments,1000 to 9999 seconds in 1 second increments Start Voltages 1000 Volts ±0.3% standard,adjustablebetween 10 to 1000 volts in 1 volt increments Stop Voltage 100 Volts ±3% standard,adjustable between0 and 995 in 1 volt increments

The Model 280 allows for flexibility andease-of-use in a variety of environments, including mini-environments

Peak Displays ±peak voltage during Float mode Power 90-250 VAC 50/60 Hz,internal 12 volt battery with built-in charger Voltage Display 3 1/2 ±1.0 volt resolution Display 240 X 64,backlight LCD,character/graphic Voltage Display 3 ½ digit,resolution:±1.0 volt Timer Display 4 digit Accuracy Electrometer ±0.1% reading ±1.0 Volt referred to input Bandwidth 1kHz at 20Vp-p,10Hz at 2000Vp-p Zero Drift <100 mV/sec Plate Self-discharge <200mV/sec
The Model 280 CPM dis-plays an easy to viewLCD screen for tracking ofyour operating parame-ters. Users can set thetest parameters all by thesimple push of a button. Charge Plate Capacitance 20pF,±5% Battery Life 6 hours,before recharge,with 9 volt NEDA#1604A or equivalent alkaline

Operating Conditions

Temperature 5° C to 35° C Temperature Sensor ±2° C Operating RH To 80%,non-condensing Humidity Sensor ±5% typ.from 10% to 80% RH @ 25°C Dimensions 11”W x 9”L x 5”D (12.7 x 22.86 x 27.94 cm) Weight 12.5 pounds (5.7 kg) Certifications

Accessories

Plates Sizes Various Extension cable (5ft.) Ground cable Power cord
Ion Systems 1005 Parker Street, Berkeley, CA USA 94710 Telephone 510.548.3640 or 800.367.2452 Fax 510.548.0417 www.ion.com Ion Systems’ Logo is a trademark of Ion Systems.© 2000 Ion Systems. Printed in the USA 11/00