GE DigitalFlow GF868, Programming Manual

Page: 58 / 152

Chapter 2. Displaying Data
48 DigitalFlow™ GF868 Programming Manual (2-Channel)
2.6 Displaying the Transducer Signal (cont.)
In addition to the functions available on the option bar, some of the numeric keys are used to specify which transducer
signal is displayed and to scale the resulting graph. Table 15 lists these functions.
In summary, three basic functions are performed with the numeric keys:
•
Signal Selection: use the “1” and “2” keys to select a transducer signal for display by scrolling through the list of
available signals.
•
Vertical Scaling: The “4” and “5” keys are used to scale the graph vertically. Each press of the “4” key doubles the
height of the graph, while each press of the “5” key halves the height of the graph. The three available scale factors
are 1x, 2x and 4x.
•
Horizontal Scaling: The “7” and “8” keys are used to scale the graph horizontally. Each press of the “7” key
doubles the
T INC
value (2x horizontal compression), while each press of the “8” key halves the
T INC
value (2x
horizontal expansion). The four available compression ratios are 1x, 2x, 4x and 8x.
To return to the standard data screen either select
EXIT
from the option bar or press the [EXIT] key on the keypad.
Table 15: Numeric Key Functions
Key Function
1 Scroll down the transducer signal list
2 Scroll up the transducer signal list
4 Expand the graph vertically
5
Return expanded graph to previous size
7 Compress graph horizontally
8 Return compressed graph to previous size