Fluke 12B/18 Instruction Sheet page 15

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Function
Protection
f
E
f
E
J
L
J
L
6
1. 3 x 10 V Hz maximum
2. ≅2 kΩ input impedance up to 50V. Impedance increases with input
voltage to >300 kΩ at 600V.
Overload
1
600V rms >5 MΩ <100 pF
Automatic Selection and LoZ = >2 kΩ
<200 pF (ac coupled)
600V rms >10MΩ <100 pF
Automatic Selection and LoZ = >2 kΩ
<200 pF
Common Mode
Rejection Ratio
Unbalanced)
600V rms >60 dB at dc 50
or 60 Hz
600V rms >100 dB at dc,
50 or 60 Hz
Open Circuit
Test Voltage
600V rms
600V rms
600V rms
600V rms
Input Impedance (Nominal)
2
(1 kΩ
>50 dB at 50 Hz or 60
Hz
To 4.0 MΩ
<1.5V dc <450 mV
2.4-3.0V dc
Short Circuit Current
<500 µA
0.95 mA (typical)
http://www.elso.sk
2
Normal Mode
Rejection
Full Scale Voltage
40 MΩ
<1.5V dc
dc
2.400V dc