Boolean Operators

Boolean operators enable you to two or more alarm criteria. For example, with a Boolean operator, you can create a price alarm that alerts you when two or more instruments have reached important price levels. Alarms enable you to employ two Boolean operators:

Op.
Description
Example
AND
The AND Boolean operator enables you to join trigger conditions. If you use the AND operator to join trigger conditions, an alarm sounds only if all the trigger conditions are met.

TIME==13:00 AND DATE==12/1/94

SPZ4>470 AND SPH5>458
OR
The OR Boolean operator also enables you to join trigger conditions. If you use the OR operator, however, an alarm sounds if any conditions are met.
TIME==13:00 OR SPZ4>470

SPZ4>470 OR SPH5>458

Op.	Description	Example
AND	The AND Boolean operator enables you to join trigger conditions. If you use the AND operator to join trigger conditions, an alarm sounds only if all the trigger conditions are met.	TIME==13:00 AND DATE==12/1/94 SPZ4>470 AND SPH5>458
OR	The OR Boolean operator also enables you to join trigger conditions. If you use the OR operator, however, an alarm sounds if any conditions are met.	TIME==13:00 OR SPZ4>470 SPZ4>470 OR SPH5>458