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parameters and initiate a test remotely. Ten pre-programmed test files can be
accessed by connecting pins 1,6,8, and 9 to the common pin 7, in different
combinations. The memory select bits should be set simultaneously and remain set
for a minimum of 20ms to guarantee that the correct memory will be selected.
However, the memory select bits may be set in sequential manner, provided that the
time delay between each bit is less than 4ms. When the desired bit pattern has been
established it should remain set for a minimum of 20ms to guarantee that the correct
memory will be selected. The Remote File Select Truth Table (binary) shows the
different combinations of momentary switch (relay) closures, and which memory
programs that will be selected as the result. It may be necessary to "OR" the
momentary switches (relay contacts) to prevent incorrect program selection due to
timing errors.
REMOTE FILE SELECT TRUTH TABLE
1= Momentary Contact closure between BIT and COMMON
0= No Contact closure between BIT and COMMON
ACTIVATING MEMORY PROGRAM FUNCTIONS THROUGH
THE REMOTE CONNECTOR, SELECTS THE PROGRAM AND
STARTS THE TEST WHICH IS PREPROGRAMMED INTO
THAT MEMORY
DO NOT CONNECT VOLTAGE OR CURRENT TO THE SIGNAL
INPUTS, THIS COULD RESULT IN DAMAGE TO THE
CONTROL CIRCUITRY.
Remote Interlock
OMNIA is equipped with a Remote Interlock feature. Remote Interlock utilizes a set of
closed contacts to enable the instrument’s output. If the Remote Interlock contacts are
open the output of the instrument will be disabled. Remote Interlock could also be
referred to as a remote system lockout, utilizing “fail when open” logic. If the Remote
Interlock contacts are open and the TEST button is pushed, a pop-up message will be
displayed on the screen for two seconds. The message will appear as follows:
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