Rick, what sort of alerts are you getting, as you've not enabled any optional notifications for the resource, so you should only get one notification when the conditions is first met.
I'm not completely sure what's happening yet, but you do have the test round the wrong way.
What you have configured will send an alert when the condition is met, i.e. when the free space on the device is greater than 1600. It shouldn't be sending any further notifications as you have the other options unselected (in particular the Repeat option).
I've done some testing with a similar condition to yours, and this is what I see, I get a notification the first time the condition is met. If the free space drops below the value in the test, nothing happens, but when the space is freed so that it exceeds the value specified again, I get a notification.
NAME: /system/filesystem/availMb/tmp
DESCRIPTION: The amount of free space in the file system in megabytes.
TYPE: /system/filesystem/availMb/tmp is a Resource Instance
whose values are 64-bit floating point values.
There is 1 active monitor request reported for this resource.
The Monitor Request ID in DECIMAL: 160497666
The (PID.Request#) is 2449.2
Operation is RM_GREATER_THAN_OR_EQUAL_TO 31.000000 with no notification options set
Polling Interval is 60 seconds
The current value of the resource is 31.400000
email notification:
Subject: hppine44: Event Monitor Notification
>------------ Event Monitoring Service Event Notification ------------<
Notification Time: Fri Apr 29 09:22:20 2005
hppine44 sent Event Monitor notification information:
/system/filesystem/availMb/tmp is >= 31.
Its current value is 31.4.
User Comments:
ITRC test
>---------- End Event Monitoring Service Event Notification ----------<
