1256E User Manual
Introduction 1-4
Racal Instruments
©
2002
Powerful Software
The 1256 provides extensive software capabilities, including:
•
Exclude Lists.
Allows you to prevent simultaneous closure
of switches in a specified group. The switches are then
mutually exclusive.
•
Equate Lists.
Reduces programming effort. When two or
more modules are on an equate list, they respond
simultaneously to a command sent to any of them.
•
External Trigger Input.
Allows an external device to trigger
switching operations. The external device connects to the
External Trigger In
connector.
•
External Trigger Output.
Provides a pulse on the
External
Trigger Out
connector to trigger an external device, such as
a DMM, after the relay states have changed.
•
Scan Lists.
Allows you to specify a sequence of relay
closures to step through in response to an external trigger
source. A scan list may include relays on one module or
multiple modules.
•
Programmable Delay.
Allows you to specify the amount of
time delay from a relay state change to an external trigger
pulse.
•
Verification.
Allows you to verify the status of all switches.
•
Path-Level Switching.
Allows complex paths to be
defined with open and close elements, stored in non-
volatile memory, and be controlled remotely or through the
front-panel display.
•
Confidence Mode.
Automatically verifies correct
application of voltage to relay coils.
•
Non-Volatile Memory.
Stores and recalls switch
configurations and 1256 user preferences (such as GPIB
address and RS-232 baud rate).
•
Power-Up Recall.
Automatically recalls a complete
switching system configuration from non-volatile memory at
power-up.
•
Self-Test.
Ensures that critical system components are
functioning correctly. This test executes automatically at
power-up.
