Fluke 11 - Page 23

Theory of Operation
VCHEK Input Resistance
2
2-7
500
100
50
10
5
1
0.1 0.5 1.0 5.0 10.0 5.0 500.0
SMALL SIGNAL INPUT RESISTANCE (kΩ)
|Vin| (Vdc)
POSITIVE DCV INPUT
NEGATIVE DCV INPUT
ana01f.eps
Figure 2-1. Typical VCHEK Input Resistance with DC Volts Function Selectedcance