TOS9213S/ TOS9213AS
5-31
■
LOW
In the LOW mode, the insulation resistance of the test leadwire and jigs is included
in measurements, as shown in Fig. 5-7 (A) and (B). However, the ammeter is pro-
tected from short-circuiting, ensuring safe testing regardless of whether the DUT is
grounded. For this reason, it is recommended that LOW be set in ordinary tests.
(A) DUT gro
u
nded
(B) DUT not gro
u
nded
Fig.5-7
Selecting LO
W
Insulation
resistance of
the test lead
wire and jigs
Setting to LOW
Ammeter
TOS9213S
TOS9213AS
HIGH VOLTAGE terminal
LOW
terminal
D
U
T
Insulation
resistance of
the test lead
wire and jigs
Setting to LOW
Ammeter
TOS9213S
TOS9213AS
HIGH VOLTAGE terminal
LOW
terminal
D
U
T