VTI Instruments EX1200 Series, User Manual

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EX1200-2001 Plug-in Module 19
329H
S
ECTION
4
EX1200-2001 P
LUG
-
IN
M
ODULE
20-C
HANNEL
16 A
MP
SPST S
WITCH
The EX1200-2001 and EX1200-2002 are the only switch modules in their class with the ability to
switch up to 16 A. Some applications include: ac line power switching, switching of dc or ac
power supplies, control or driving relays for industrial machines (robotics, numerical control
machines), automotive engine control, and solenoid switching.
Since these modules typically switch power to the UUT or interface, the digital input lines on the
EX1200 series mainframes support the ability to force all relays automatically to their normally
open state if a fault condition occurs. This approach instantly removes all power to the UUT or
interface. These modules can be automatically configured in the setup phase at the beginning of
each scan step to facilitate test sequencing and control.
The EX1200-2001 can be controlled programmatically using IviSwtch-compliant calls. Both path
level programming and individual relay control are available. Refer to the host driver
documentation for additional details.
330H
Figure 4-2 provides a logical diagram of the switch module
and identifies the switches used by the module. This information can be used for individual relay
control through the driver.
C
ONNECTOR
P
INS AND
S
IGNALS
F
IGURE
4-1: EX1200-2001 F
RONT
P
ANEL
(F
RONT
V
IEW
)