Ultra Start 15xx Manual de usuario descargar pdf (Pagina 53)

5-7

Start Study

After you have selected an

interval to use, you are ready

to start the study. The display

shows the current count num-

ber and the interval number. In

the example shown, this is the

ﬁrst count done, and it is at the ﬁrst interval.

The TDC Ultra is waiting for you to push any class button, which starts

the study. The display in the lower left corner shows the current time,

so it is easy to synchronize the start of the study to the beginning of the

desired interval. You do not have to push the ﬁrst button exactly when

the seconds roll over to zero. The analysis software rounds the start of

the count to the nearest minute automatically. However, when starting

a new study, always try to begin as close to an interval boundary as

possible, such as xx:00, xx:15, xx:30, or xx:45.

Press any of the gray keys to begin counting and the TDC Ultra will

start recording data.

When you push the ﬁrst button

to start the study, the display

changes to show the amount of

time left in the present interval.

In this case, it starts at 15:00

minutes and counts down to

zero. At the end of each interval, the TDC Ultra beeps three times.

Normally you are not watching the display, you are watching the trafﬁc.

The beeps remind you that the interval is over. This is only important if

this is the last interval and you are ready to quit; otherwise, just ignore

the beeps and keep counting vehicles.

********IMPORTANT********

Once you start the study, the only way to quit it is to turn the TDC

Ultra off. Always wait for the end of interval beeps before turning

the unit off.

Classiﬁcation Count

Count: 001 Int: 001

--Any Key to Start--

07:59:37

Classiﬁcation Count

Count: 001 Int: 001

08:01:23 Rem 13:37

Chapter 5 — Classiﬁcation Studies

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Ultra Start 15xx Manual de usuario Pagina 53