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| Description The Model 431 Shielded Bag Test System is designed to perform both the EIA-541 and the ESD S11.31 tests when used in conjunction with the appropriate user supplied oscilloscope and computer. The System provides the correct discharge pulse and the resulting attenuated voltage output for direct connection to a 2 channel oscilloscope for the EIA-541 test, or current pulse for the ESD S11.31 test. The Model 431 consists of a variable 800 to 1200 Volt power supply, 100 pf/1500 Ohm HBM network (200 pf/1500 Ohm for EIA-541), mercury wetted charge/discharge relay, capacitive sensor and a controlled force discharge electrode. Adjustable bag insertion stops enable the user to configure the System for different bag sizes per specification. A Tektronix CT-1 current sensor with 500 Ohm resistor, and built-in 100:1 voltage attenuators are standard for interfacing the System with an appropriate user supplied oscilloscope. (50 MHz, 100 MS/s for EIA-541; 200 MHz, 1 GS/s with computer interface for ESD S11.31.) A31/2-digit LCD readout displays the discharge voltage. Multicolored LED point sources indicate CHARGE, DISCHARGE and TEST OVER functions. The FUNCTION switch is used to select either a voltage differential (EIA-541) or a current pulse (ESD S11.31) measurement. The discharge is initiated by either a front panel discharge switch or by a foot operated switch which is convenient when testing in a humidity chamber. A computer interface is also provided to enable the discharge sequence | |||||||||||||||||||||||||||||||
| specified in ESD S11.31 to be automatically controlled by the optional ETS Test Suite Manager Program. The discharge waveform of the Model 431 meets the requirements of ESD S5.1 "Electrostatic Discharge Sensitivity Testing - Human Body Model." This waveform is specified in ESD S11.31 and, following present industry practice, replaces the 200pf/400 kOhm network specified in EIA-541 (1988). The use of plug-in R/C components allows other networks to be used. Cables are provided for interfacing the Model 431, Tektronix TDS series oscilloscopes and the computer parallel port. The optional ETS Test Suite Manager Program displays the waveforms, calculates the energy of the discharge pulse induced inside the test bag and processes the data in accordance with ESD S11.31. It also controls the AUTO nJ function of the Model 431 and programs the oscilloscope. | |||||||||||||||||||||||||||||||
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| Specifications H.V. Power Supply: +800 to +1200 Volts Discharge Circuit: ESD S11.31: 100 pf/1500 Ohms EIA-541: 200 pf/1500 Ohms Other R/C networks: Optional Discharge Waveform: Rise time (0 Ohms): 6 ±2 nsec. (500 Ohms): <20 nsec. Fall time (0 Ohms): 150 ±15 nsec. (500 Ohms): 200 ±20 nsec. Ringing: <15% Output Energy: 50 ±5 uJ Switching Method: Bounceless SPDT mercury wetted relay | |||||||||||||||||||||||||||||||
| Capacitive Sensor: Electrodes: .875" diameter stainless steel Dielectric: .5" acrylic Capacitance: 6 pf Interface: Oscilloscope: Voltage Output: 100:1 attenuator into 1 Megohm Current Output: 5 Volts/Amp, Tektronix CT-1 Current Sensor Computer: 16 Megabytes of RAM (minimum) IBM Compatible, 486 processor or better with Windows 95® Model 431 to Printer Output (Parallel Port) cable Tektronix Communications to Data Input cable Power: User selectable 115/230 VAC, 50/60 Hz | |||||||||||||||||||||||||||||||
| Dimensions: 4"W x 4"H x 12"D Warranty: One (1) year In accordance with ETS policy to improve our product line, the specifications cited above are subject to change without notice. | |||||||||||||||||||||||||||||||
| Discharge & G1.5" diamete | |||||||||||||||||||||||||||||||
| electro-tech systems, inc._ 3101 Mt. Carmel Avenue, Glenside, PA 19038 • Tel: (215) 887-2196 • Fax: (215) 887-0131 | |||||||||||||||||||||||||||||||
| 6/99 | |||||||||||||||||||||||||||||||