METREL MD 9040 Manuel D'utilisation page 21

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