4
4) OPERATION
WARNING: Before and after hazardous voltage measurements, test the voltage
function on a known source such as line voltage to determine proper meter functioning.
ACV, DCV, DC+ACV (Models 078 & 079 only), Line-level Hz, & EF (NCV) functions
Inputs, other than that of
EF
as described below, are made through the test lead
terminals
COM
/
+
. Defaults at
ACV*
Function. Press
SELECT
button momentarily to
select
DCV
,
DC+ACV
,
Line-level Hz
or
EF**
(NCV) function in sequence.
Note:
*
ACV
(and hence
AC+DCV
&
Line-level
Hz
) function is equipped with digital low-pass
filter, and is capable of dealing with
VFD
(Variable Frequency Drives) signals. It also
improves ACV reading stability in noisy electrical environments.
**For Models 073 & 072,
EF
(NCV) function is designed in an independent rotary
switch
position