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MD 9040 & MD 9050 Digital multimeter Specification
21
AC & AC+DC Voltage
Function RANGE Accuracy
50Hz ~ 60Hz
mV 60.00mV,
600.0mV
V 9.999V, 99.99V,
999.9V
0.5% + 3d
40Hz ~ 500Hz
mV 60.00mV,
600.0mV 0.8% + 4d
9.999V, 99.99V 1.0%+4d V
999.9V 2.0%+4d
500Hz ~ 1kHz
mV 60.00mV,
600.0mV 2.0% + 3d
9.999V, 99.99V 1.0%+4d V
999.9V 2.0%+4d
1kHz ~ 3kHz
mV 60.00mV,
600.0mV 2%+3d
V 9.999V, 99.99V,
999.9V 3.0%+4d
3kHz ~ 20kHz
mV 60.00mV 1),
600.0mV 1) 2%+3d
9.999V, 99.99V 3dB V
999.9V Unspec’d
1)Specificied from 30% to 100% of range.
CMRR: >60dB @ DC to 60Hz,
Rs=1kΩ
Input Impedance: 10MΩ, 50pF nominal
(80pF nominal for 600mV range)
Residual reading less than 5 digits with
test leads shorted.
Audible Continuity Tester
Audible threshold: between 20Ω and
300Ω; Response time < 100μs
AutoCheckTM (ACV)
RANGE 1) Accuracy
50Hz ~ 60Hz
9.999V, 99.99V, 999.9V 1.0%+4d
Lo-Z ACV Threshold:
> 3VAC (50/60Hz) nominal
Lo-Z ACV Input Impedance:
Initially approx. 3.0kΩ, 150pF nominal;
Impedance increases abruptly within a
fraction of a second as display voltage
is above 50V (typical). Ended up
impedances vs display voltages
typically are:
18kΩ @100V
125kΩ @ 300V
320kΩ @ 600V
460kΩ @ 1000V
DC Voltage
Function RANGE Accuracy
60.00mV 0.12%+2d mV
600.0mV 0.06%+2d
V 9.999V, 99.99V,
999.9V 0.08%+2d
NMRR: >60dB @ 50/60Hz
CMRR: >110dB @ DC, 50/60Hz,
Rs=1kΩ
Input Impedance: 10MΩ, 50pF nominal
(80pF nominal for 600mV range)
dBm
At 600Ω, -11.76dBm to 54.25dBm,
Accuracy: ± 0.25dB + 2d (@40Hz --
20kHz)
Input Impedance: 10MΩ, 50pF nominal
Selectable reference impedance of 4, 8,
16, 32, 50, 75, 93, 110, 125, 135, 150,
200, 250, 300, 500, 600, 800, 900, 1000,
1200Ω
AutoCheckTM (DCV)
RANGE Accuracy
9.999V, 99.99V, 999.9V 0.5%+3d
Lo-Z DCV Threshold:
> +1.5VDC or < -1.0VDC nominal
Lo-Z DCV Input Impedance:
Initially approx. 3.0kΩ, 165pF nominal;
Impedance increases abruptly within a
fraction of a second as display voltage
is above 50V (typical). Ended up
impedances vs display voltages
typically are:
18kΩ @100V
125kΩ @ 300V
320kΩ @ 600V
500kΩ @ 1000V
21


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