> AT-9995 Professional Automotive DMM à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ ÁÔàµÍÃìÇÑ´¤ÇÒÁàÃçÇÃͺ Professional Automotive DMM with RS-232 PC Interface Features • Oversized high contrast 4000 counts with Bargraph backlight LCD Display • PRM measurement for automotive engines with 1 to 12 Cylinders using the inductive pick-up • Data Hold and Relative functions • Max Hold and Min Hold • Auto Power Off • Fused current inputs and overload protection on all ranges Specifications Voltage DC: 400mV, 4V, 40V, 400V, 1000V; +/-(0.5%+2d) Voltage AC: 400mV, 4V, 40V, 400V, 750V; +/-(0.8%+4d) Current DC: 400uA, 4000uA, 40mA, 400mA, 4A, 20A; +/-(1.2%+2d) Current AC: 400uA, 4000uA, 40mA, 400mA, 4A, 20A; +/-(1.5%+4d) Resistance: 400ohm, 4kohm, 40kohm, 400kohm, 4Mohm, 40Mohm; +/-(0.8%+3d) RPM(Tach): 600~4000RPM; 600~12000RPM(x 10RPM); +/-(2.5%+2d) Dwell Angle: 1CYL, 2CYL, 3CYL, 4CYL, 5CYL, 6CYL, 8CYL, 10CYL, 12CYL; +/-(2.5%+2d) Duty Cycle: 0.1~99.9%; +/-(1.5%+2d) Period: 0.1~20mS; +/-(3.0%+5d) Pulse Width: 0.1~10mS; +/-(3.0%+5d) Frequency: 30kHz; +/-(2.0%+2d) Temperature: -20~760 Deg.C/ -4~1400 Deg.F; +/-(3.0%+2d) Diode Check: Open circuit voltage 1.5V dc typical; Test current 0.3mA typical Continuity Test: Threshold 30 ohm, Continuity Beeper 2.7kHz Size(HxWxD): 197mm x 88.4mm x 41.2mm Weight: 390g Tachometer à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ ÁÔàµÍÃìÇÑ´Ãͺ ÇÑ´Ãͺ rpm à¤Ã×èͧÁ×ÍÇÑ´Ãͺ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ > AT-9995 Professional Automotive DMM à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ ÁÔàµÍÃìÇÑ´¤ÇÒÁàÃçÇÃͺ