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ZENO

-3200 USER MANUAL

Coastal Environmental Systems (206) 682-6048

Page 21

Sample Interval |---------------------------------------| 60 seconds

Sample Duration |-------------------------------------| | 55 seconds

Physically, when the ZENO

-3200 is collecting data, ZENOSOFT

turns on various internal components

in order to read data from the various sensors. Hence, the Sample Duration not only represents the time

when data is being collected, but also the time when the ZENO

-3200 is consuming more power. for this

reason, the Sample Duration is often referred to being the time when the ZENO

-3200 is "awake."

When the sum of the Sample Duration Time and Sample Time Offset is less than the Sample Interval

Time, there will be a time period in which the ZENO

-3200 is not performing any of its primary data

collection functions. When the ZENO

-3200 is not performing any of its primary data collection

functions, ZENOSOFT

turns off any unnecessary internal components to conserve power. This

scheduled gap in data collection is often referred to as the time when the ZENO

-3200 is "asleep."

The ZENO

-3200 consumes more power when it is collecting data.

Reducing the Sample Duration Time with respect to the Sample Interval

Time conserves power. This may be very important if the primary source of

power for your ZENO

-3200 is a battery.

Versatility is one of the essential features designed into the ZENO

-3200. The settings for the Sample

Interval Time, Sample Duration Time and Sample Offset Time will create a wide variety of possible data

collection scenarios. Power consumption may play a key role in determining your data collection

requirements.

Here are three examples that will demonstrate very different ways that you can set up the ZENO

-3200

data collection cycle:

ZENO

-3200

Parameter

Example A

Sample sensors

continuously (no sleep

time), log data once an

hour.

Example B

Sample sensors for one

minute, once per hour;

log data once an hour.

Example C

Sample sensors during

regular business hours

every 24 hours, log data

once a day.

Sample Interval

Time

1 hour

(3600 seconds)

1 hour

(3600 seconds)

24 hours

(86400 seconds)

Sample Duration

Time

1 hour

(3600 seconds)

1 minute

(60 seconds)

10 hours

(36000 seconds)

Sample Offset

Time

0 seconds 0 seconds 9 hours (start at 8 a.m.)

(32400 seconds)

In the following time line, the darkened areas illustrate when the ZENO

-3200 is awake and sensors are

being sampled for these three examples over a 24-hour period.

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 393 394

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