V, hl GUARD
V, R GUARD
DESCRIPTION
Using the Model 617 in the guarded configuration IV, ‘2 GUARD switch
on) reduces response time and the effects of cable leakage when mak-
ing volts and ohms measurements. The guard should be used when
making resistance measurements above lOOMl2 or voltage measure-
ments that have high source resistances. See Fig 4 for guarded
measurement corrections.
00
w uo
cl
MODEL 617
*IF COM TO CHASSIS LINK IS IN, THE GRN LEAD CAN BE USED FOR
LOW. OTHERWISE. THE GRN LEAD IS UNUSED.
*‘SUPPLIED INPUT CABLE
INPUT
Fig 4. Guard Measurements
31
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