Voltech AT360, User Manual

Page: 261 / 470

F
RONT
-
PANEL
M
ODES
V
OLTECH
AT
I
U
SER
M
ANUAL
P
AGE
6-13
By default, the number of primary turns is assumed to be 1. In this example:
Np : Ns
1 : 0.365
To display the actual number of turns as measured, enter the number of
primary turns by pressing the appropriate buttons on the numeric keypad.
(Note: Only numbers and a decimal place can be entered for Np.) E.g.,
Np = 1000
Np : Ns
1000 : 365
The number of primary turns entered will be retained by the tester until the
‘More’ softkey is selected, i.e., if you exit LCR (FIX) and re-enter or if you select
TRL, LL or C, the value for Np remains the same.
6.1.3 I
NSULATION
R
ESISTANCE
Insualtion resistance measurements involve applying a relatively high DC
voltage to the part under test in order to measure a high value of resistance.
Because of the high voltages involved, IR meaurements operate in a slightly
different way to other tests. There is a separate voltage setting menu and ON /