Fluke 289 - Manual (Page 87)

True-rms Digital Multimeters
Detailed Specifications
77
Input Characteristics
Function
Overload
Protection [1]
Input Impedance
Common Mode
Rejection Ratio
(1 k Ω unbalance)
Normal Mode Rejection
L 1000 V 10 M Ω <100 pF >120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz
F mV 1000 V [2] 10 M Ω <100 pF >120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz
K 1000 V
10 M Ω <100 pF
(ac-coupled)
>60 dB, dc to 60 Hz
L 1000 V
3.2 k Ω <100 pF
(ac-coupled)
Not specified Not specified
Full Scale Voltage Typical Short Circuit Current
Function
Overload
Protection [1]
Open Circuit
Test Voltage
To 500 k Ω >5 or 50 nS 500 Ω 5 k Ω 50 k Ω 500 k Ω 5 M Ω 50 M Ω
e 1000 V [2] 5 V dc 550 mV <5 V 1 mA 100 μ A 10 μ A 1 μ A 0.3 μ A 0.3 μ A
50e 1000 V [2]
20 V decreasing
to 2.5 V
500 mV 10 mA
G 1000 V [2] 5 V dc 3.1 V dc 1 mA
[1] Input is limited to the product of a V rms sinewave times frequency of 2 x 10 7 V-Hz.
[2] For circuits <0.5 A short circuit. 660V for high energy circuits.