Amprobe AM-42 Multimeters User Manual
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E.M.C.: Meets EN61326 (1997, 1998/A1), EN61000- 4-4 (1995), & EN61000-4-3 (1996)
In an RF Field of 3V/m:
Capacitance function is not specified
Other function ranges:
Total accuracy = Specified accuracy + 45d
Performance above 3V/m is not specified
Overload Protection:
AM-42 & AM-47: 600VDC & VAC rms
AM-45: 450VDC & VAC rms
Low Battery: Below approx. 2.4V
Power Supply: 3V standard button battery x 1 (IEC-CR2032; ANSI-NEDA-5004LC)
Power Consumption (typical):
AM-42 & AM-45: 2mA
AM-47: 6mA for Voltage functions on Auto-V
Ω position, and 2mA for other functions
APO Consumption (typical): 2.2
µA
APO Timing:
AM-42: Idle for 30 minutes
AM-45 & AM-47: Idle for 3 minutes
Dimension / Weight: L122mm x W65mm x H13mm / Approx. 100 gm
Special Features:
AM-42: Data Hold, and 30ms MAX Hold
AM-45 & AM-47: AutoCheck
TM
(Automatic V &
Ω Selection), and EF-Detection
Accessories: Battery installed, and User’s manual
Electrical Specification
Accuracy is given as +/- (% of reading digits + number of digits) or otherwise specified @ 23
o
C +/- 5
o
C and less
than 75% R.H.
------------------------------------------------------------------------- --------------------------------------------------------------------------
DC Voltage (AM-45 & AM-47)
RANGE Accuracy
6.000V 0.5%+3d
60.00V 1.0%+5d
450.0V
1)
1.2%+5d
600.0V
2)
2.0%+5d
600.0V
3)
1.5%+5d
AM-45 Input Impedance:
AutoCheck
TM
Lo-Z DCV: 160k
Ω, 160pF nominal
AM-47 Input Impedance:
AutoCheck
TM
Lo-Z DCV: 833k
Ω (4.2kΩ when
displaying “Auto”), 90pF nominal
Hi-Z DCV: 5M
Ω, 90pF nominal
NMRR: > 30dB @ 50Hz/60Hz
CMRR: > 100dB @ DC, 50Hz/60Hz; Rs=1k
Ω
DCV AutoCheck
TM
Threshold:
> +1.2VDC or < -0.6VDC nominal
1)
AM-45 AutoCheck
TM
DCV only
2)
AM-47 AutoCheck
TM
DCV only
3)
AM-47 Hi-Z DCV only
AC Voltage (AM-45 & AM-47)
RANGE Accuracy
50Hz -- 60Hz
6.000V, 60.00V, 450.0V
1)
,
600.0V
2)
1.5%+5d
CMRR: > 60dB @ DC to 60Hz, Rs=1k
Ω
AM-45 Input Impedance:
AutoCheck
TM
Lo-Z ACV: 160k
Ω, 160pF nominal
AM-47 Input Impedance:
AutoCheckTM Lo-Z ACV: 833k
Ω (4.2kΩ when
displaying “Auto”), 90pF nominal
Hi-Z ACV: 5M
Ω, 90pF nominal
ACV AutoCheck
TM
Threshold:
> 1.5VAC (50/60Hz) nominal
1)
Range for AM-45 only
2)
Range for AM-47 only