Logging and recording capacity, External ion events – Multi-Tech Systems 7500 User Manual

Page 151

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ION 7500 / ION 7600 User’s Guide

Logging and Recording Capacity

Chapter 5 - Features and Applications

Page 151

External ION Events

Some events are not produced by a specific module; they are generated internally
by the meter. These events and their associated priority levels are shown in the
table below.

Logging and Recording Capacity

The meter provides both data and event logs, but the amount of memory required
to store these logs depends on the number of parameters being logged and the
frequency with which these parameters are logged. The following equation can
help determine the amount of memory required to store data and event logs:

each record consumes (in Bytes) = ((number of parameters * 5) + 8)

The meter can also perform waveform recording. It can simultaneously capture
events on all channels to a maximum of 96 cycles each. To calculate the waveform
memory usage use the following formula:

waveform memory usage (in Bytes) = (2*(number of samples per cycle) +
10)*(number of cycles in waveform) + 30

N

OTE

Round up to the next kilobyte after each of the above calculations.

Event Group

Description

Priority Number

Warning

Factory initialize performed

30

Firmware or memory upgrade performed

Meter power-up or power-down

Internal modem not responding or modem recovered

Battery low

Telnet or serial terminal locked out

Security disabled or enabled

Failure

Communications fail to allocate required memory

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