Voltech AT360, User Manual

Page: 256 / 470

F
RONT
-
PANEL
M
ODES
P
AGE
6-8 V
OLTECH
AT
I
U
SER
M
ANUAL
chosen on other equipment. See later sections of this chapter for how to
program the measurement conditions of your choice.
Mes: 10mV, 3.78mA, 100Hz
These are the measured test conditions. The voltage and frequency are
measured at the sense terminals of the ATi. If you are using Kelvin (4-wire)
connections, then these are the conditions measured on the connectors of the
part under test. Usually, the voltage and frequency will be identical to the
programmed voltage and frequency, because the ATi always attempts to trim
its output voltage across the part to be equal to the desired or program voltage
(see below). If the impedance of the part is very low, the ATi might not be able
to supply sufficient current to maintain the programmed voltage. In this case,
the voltage measured will be less than the program voltage.
The current passing through the part is also displayed on this line. A constant
current can be programmed for some tests.
The ATi is applying the test signal to BNC terminals on the control panel in the
following way:
Note:
The BNC connectors are also connected internally to nodes 20 (P+ and
S+) and 18 (P- and S-) of the fixture bay.
Program v
Winding under test
P-
S- S+
P+
i
Measured v