Amprobe AM-42 Multimeters - Manual (Page 7)

7
DC Voltage (AM-42)
RANGE Accuracy
400.0mV 1.0%+2d
4.000V, 40.00V, 400.0V
2.0%+2d
600V 2.5%+4d
NMRR: > 50dB @ 50Hz/60Hz
CMRR: > 120dB @ DC, 50Hz/60Hz; Rs=1k
Ω
Input Impedance: 10 M Ω, 30pF nominal; (1000MΩ for
400.0mV range)
AC Voltage (AM-42)
RANGE Accuracy
50Hz -- 60Hz
4.000V, 40.00V, 400.0V
2.0%+5d
60Hz -- 500Hz
4.000V, 40.00V, 400.0V
3.0%+5d
50Hz -- 500Hz
600V 3.5%+5d
Input Impedance: 10 M Ω, 30pF nominal
CMRR: > 60dB @ DC to 60Hz, Rs=1k Ω
Capacitance (AM-45 & AM-47)
RANGE 1) Accuracy 2)
100.0nF, 1000nF, 10.00 µF,
100.0 µF 3) , 2000 µF 4)
3.5%+6d 5)
1) Accuracy below 50nF is not specified
2) Accuracies with film capacitor or better
3) AM-45 top range. Updates > 1 minute on large
values
4) AM-47 only. Updates > 1 minute on large values
5) Specified with battery voltage above 2.8V (half full
battery). Accuracy decreases gradually to 12% at
low battery warning voltage of approx 2.4V
Capacitance (AM-42)
RANGE 1) Accuracy 2)
500.0nF, 5.000 µF, 50.00µF,
500.0 µF, 3000µF 3)
3.5%+6d 4)
1) Additional 50.00nF range accuracy is not specified.
2) Accuracies with film capacitor or better.
3) Updates > 1 minute on large values
4) Specified with battery voltage above 2.8V (half full
battery). Accuracy decreases gradually to 12% at
low battery warning voltage of approx 2.4V
Ohms (AM-45 & AM-47)
RANGE 1) Accuracy
600.0 Ω 2.0%+6d 2)
6.000k Ω 1.2%+6d 2 )
60.00K Ω, 600.0KΩ 1.0%+4d
6.000M Ω 2.0%+4d
Open Circuit Voltage: 0.4VDC typical
1) AutoCheck TM is for 6.000k Ω ~ 6.000MΩ ranges;
600.0 Ω is an independent range for AM-47 only
2) Add 40d to specified accuracy while reading is below
20% of range
Ohms (AM-42)
RANGE Accuracy
400.0
Ω 1.5%+6d
4.000K Ω, 40.00KΩ, 400.0KΩ 1.0%+4d
4.000M Ω 1.5%+4d
40.00M Ω 2.5%+4d
Open Circuit Voltage: 0.4VDC typical
Hz Frequency (AM-45 1) & AM-47 1) 2) )
RANGE Accuracy Specified at
10.00Hz -- 30.00kHz 1) 2) < 20V Sine-rms
10.00Hz -- 999.9Hz 2)
0.5%+4d
< 600V Sine-rms
Sensitivity (Sine-rms):
1) Hz in Auto-V Ω position: > 3V
2) Line-level Hz in V position (AM-47 only):
@ 6.000VAC range: > 3V
@ 60.00VAC range: > 6V
@ 600.0VAC range: > 60V
Hz Frequency (AM-42)
RANGE 1) Accuracy
5.000Hz -- 1.000MHz 0.5%+4d
1) Specified at Input Voltage < 20VAC rms
Input Signal: Sine-wave, or Square-wave with duty
cycle > 40% & < 70%
Sensitivity (V-peak):
5Hz -- 100kHz : > 1.3Vp
100kHz -- 500kHz : > 2.2Vp
500kHz -- 1MHz : > 4.2Vp
Diode Tester (AM-42 & AM-47 only)
Test Current (Typical) Open Circuit Voltage
0.25mA for AM-42
0.48mA for AM-47 < 1.6VDC