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CEM AT-9945

Marka : CEM
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Ürün Kodu : AT-9945

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AT-205P/AT-9945/AT-9945T Automotive Digital Multimeters

Automotive Digital Multimeter provides multi-functions:

l RPM measurement for automotive engines with 2 to 10 Cylinders using the inductive Pick-up

l AT-9945T is True RMS Autoranging Automotive DMM

l Oversized high contrast 4000 counts LCD display with backlight

l 13 Functions including DCV, ACV, DCA, ACA, Resistance, RPM (Tach), Dwell angle, Duty cycle, Frequency, Temperature (ºC/ºF), Capacitance, Continuity and Diode Check

l Read pulse duty cycle and dwell angle for electronic fuel injection feedback carburetors, and ignition

l Data Hold and Relative functions

l Over-range indication

l Auto Power Off

l Fused current inputs and Overload protection on all ranges

l AT-9945/9945T measures Milliseconds pulse width to test on-time of fuel injectors, idle air control motors, and electronic transmission controls





Basic Accuracy

Voltage DC

400mV, 4V, 40V, 400V, 1000V


Voltage AC

400mV, 4V, 40V, 400V, 700V


Current DC

400uA, 4000uA, 40mA, 400mA, 4A, 20A


Current AC

400uA, 4000uA, 40mA, 400mA, 4A, 20A



400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ



600 ~ 4000RPM; 600 ~ 12000RPM(x10RPM)


Dwell Angle

4, 5, 6, 8CYL


Duty Cycle







-20ºC ~ 760ºC/-4ºF ~ 1400ºF



40nF, 400nF, 4uF, 40uF, 100uF


Pulse Width (9945)



Diode Check

Open circuit voltage 1.5V dc; Test current 0.3mA typical.

Continuity Test

Threshold 30Ω, Continuity Beeper 2.7KHz



Rubber holster, Test leads, type K temperature Probe, Inductive pick-up and 9V battery.