VTI Instruments EX1200 Series - EX1200-4128: 4 X 128 One-Wire Matrix

VTI Instruments Corp.
82 EX1200-4128Plug-in Module
EX1200-4128 P
LUG
-
IN
M
ODULE
4
X
128 O
NE
-
WIRE
M
ATRIX
, 150 V/0.5 A
The EX1200-4128 is an ultra high-density matrix module that allows the user to connect any input
row to any output column, with an SPST relay at every row/column cross-point. This architecture
provides the framework for flexible switch system designs where multiple test instruments need to
be connected to common test points. The one-wire architecture allows for any of the 128 row
inputs to be connected to any of the four column outputs.
The four output columns can be routed to the EX1200 series internal analog backplane to build
large matrices, or to connect to the optional 6.5 digit DMM, which also limits the amount of
external cabling required. A (4 x 512) 1-wire matrix can be accommodated in only four slots of an
EX1200 series mainframe, as an example.
Stub-breaking relays can remove a matrix module from the backplane to increase signal integrity
of measurements being made on other modules. All relays are fail-safe which ensures that no
undesired signals are present at the user interface in the case of power interruption.
The EX1200-4128 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.
361H
Figure 4-34 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.
CONNECTOR PINS AND SIGNALS
F
IGURE
4-33: EX1200-4128 F
RONT
P
ANEL
(F
RONT
V
IEW
)