DigitalFlow™ GF868 Programming Manual (1-Channel) 9
Chapter 1. Programming Site Data
1.6 Activating the Channel
The ACTIV submenu permits selection of the desired measurement method. While following the programming
instructions, refer to Figure 11 on page 87.
1. Enter the ACTIV submenu by pressing [F1] at the User PROGRAM prompt.
2. Press [F1] to activate the channel in BURST mode.
Note: The current status of the meter is displayed in the bottom line of the prompt area.
3. Press [F1] to select Skan mode or [F2] to select Skan/Measure mode. The meter will exit the ACTIV submenu and
return to the channel menu screen.
The Model GF868 flowmeter can take measurements in two different ways:
• Skan is a low resolution technique for locating the acoustic signal and for high velocity measurements. It is more
robust in a noisy environment than the Measure technique.
• Measure is a more precise technique best used for low velocity measurements.
If Skan is selected at the next prompt, the instrument uses this technique exclusively. However, if S/M is selected, the
meter uses Skan to find the acoustic signal and then tries to use the Measure technique for a more precise measurement.
Note: To change the Skan and Measure parameters, see the
SIGNL submenu section of this chapter.
1.6.1 Procedure Options
After completing the above steps, the meter returns to the User PROGRAM prompt. Continue as follows:
• To continue programming the meter, refer to the menu maps in Appendix A and navigate to the desired menu.
Then, proceed to the appropriate section of the manual for instructions.
• To leave the User Program and retain the previous settings, press [EXIT] and then press [F1] = NO at the SAVE
prompt. Any programming changes will be discarded and you will be returned to the data display.
• To leave the User Program and return to measurement mode, press [EXIT] and then press [F2] = YES at the SAVE
prompt. Your programming changes will be entered into the meter’s memory, and you will be returned to the data
display.
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