User guide

3.0 BASIC OPERATING INSTRUCTIONS

The Basic mode of operation encompasses those functions that would be done on a

routine basis and relate primarily to viewing and reviewing data with some use of the menu

system. The advanced mode, while technically still simple to operate, involves setting up

the unit and would typically need to be done only once.

3.1 BASIC MODE OF OPERATION

Basic operations are all done using the five buttons on the front panel (shown below) and

the first level menu.

Each arrow button has dual functions. The second function is activated by pressing and

holding the MENU (2nd Function) button and then pressing any of the other buttons. The

2nd function of each button is denoted by the text under the arrow symbol. (EXPAND,

COMPRESS, ZOOM + and ZOOM -).

The unit need not be recording to the memory card in order to manipulate data. The data

available however is dependent on how long the unit has been operating, the sample rate

and the buffer or memory card size.

3.2 VIEWING HISTORIC DATA

Any data that is not currently visible on the screen is historic data. To view past data, the

left (◄) and right (►) arrow buttons are used to rewind (◄) or fast forward (►) the data

(scrolling). When rewinding, data will be retrieved from the memory card or from the

internal buffer and is available as far back as the start of recording. When fast-forwarding,

data is available up to real time. The time and date stamp on the screen indicates the

relative time of the samples being viewed. Depending on the amount of data to process

there may be delays before the screen reacts.

Historic viewing by scrolling is limited to the file (or files) created since recording was

manually started via the RECORD MODE Menu - ON. If NOT recording, scrolling back in

time is limited to the content of the internal buffer. The history buffered is dependent upon

the sampling speed. Data is presented as latest data first.

It is possible to view data from other files of previously recorded data (or even data

recorded on another machine) using the View File menu.

 At any stage during the rewind or fast forward process, the screen can be

restored to current or real time display by pressing the MENU button.

 When the data on screen is not current, an .H. appears on the status line to

indicate that the rewind or compress mode is active and the data is on Hold.

3.3 COMPRESSING AND EXPANDING DATA (TREND VIEWING)

In order to view data trends, it is often necessary to pack more data onto the screen than is

normally visible in real time. To compress the data, press and hold the MENU (2nd

Function) key and then press the COMPRESS (►) key. Each time this key is pressed the

amount of data on the screen will double up to a maximum of 32 times (equivalent to 5

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