Voltech AT360, User Manual

Page: 411 / 470

V
OLTECH
AT
I
U
SER
M
ANUAL
P
AGE
7-113
7.1.29 OUT – C
ONTROL
E
XTERNAL
D
EVICES
The AT Series testers normally make all the necessary connections for
testing automatically using a matrix of internal relays.
When, for example, an external component such as a resistor is required
for testing, then during the test sequence the resistor may be switched
into or out of the test circuit using an OUT test. A +12V DC power supply
ensures that everything necessary to drive an external 12V DC relay is
available.
Pin Signal Name Pin Signal Name
1 o/p User Relay Drive 0 6 o/p User Relay Drive 1
2 o/p User Relay Drive 2 7 o/p User Relay Drive 3
3 o/p User Relay Drive 4 8 o/p User Relay Drive 5
5 o/p +12V 4 & 9 i/p Do Not Use
The OUT test is used to switch external relays at any point in a test sequence.
The user relays may in turn be used to switch in external components such as
impedance matching resistors (important for audio and telecommunications
transformers) or to connect windings in series for subsequent testing. The user
port is situated at the rear of the ATi.