Operation Manual
3
0  MX670 / MX675 
4
.7  Measurement of voltage frequency 
Position  the  switch  on  V 
, 
and press the DISPLAY key. 
Connect the red test  lead  to 
the "+" 
terminal and the black 
test  lead  to  the  "COM" 
terminal. 
Place  the  touch  prods  in 
contact with the points  whose 
frequency is to be measured. 
Read  the
  frequency  value  on 
the secondary display. 
The main display indicates the
value 
of the
 measured TRMS 
voltage. 
4.8  Measurement of AC current frequency 
1000
R
Position  the  switch
on A 
, and 
press  the  DISPLAY  key.
Open  the  jaws  by  pressing  the 
trigger. Position the clamp around 
the conductor to be measured. 
Release  the  trigger.  Check  that 
the  clamp  is  properly  cl
osed. 
Read  the  result  of  the 
measurement  on  the  secondary 
display. 
The  main  display  indicates  the
value 
of  the
  measured  TRMS 
current. 










