Model 979 Series Helium Mass Spectrometer Leak Detector
2-16
DRAFT 9/15/03
2.6.2 Reject and Audio Set Points
Touch the REJECT & AUDIO SET POINTS box to display the Reject and Audio Set Points
screen (Figure 2-9). From this screen set the parameters to enable/disable, display and/or
change the value of the four reject set points and the audio set point.
Figure 2-9
Reject and Audio Set Points Screen
2.6.2.1 Changing and Enabling Set Point Values
REJECT SET POINTS
Set REJECT SET POINTS 1 through 4 so that the set points activate
when the measured leak rate value exceeds the set point value.
When a reject set point activates, the word REJECT is displayed on
the Home screen of the touch panel along with the number of the
reject set point that has been activated. The status of the reject set
points are also available at the I/O communications port and upon
inquiry through the RS-232 line (see Appendix B “Communications
Protocol”). Disable individual reject set points using the ON/OFF
buttons located to the right of each set point field.
AUDIO SET POINT
The AUDIO SET POINT control is used to activate the audio tone
when the measured leak rate value exceeds the threshold value
(leak rate pass/fail specification) set by the operator. When the
audio set point control is set to ON, the audio tone frequency
increases as the size of the measured leak increases beyond the set
point. The audio volume control is located on the front panel (see
Figure 1-8 on page 1-12) and is discussed in Section 2.2 “Operator
Interface” on page 2-2.
ESC
DONE
REJECT SET POINT #3: X.XE-XX
OK
REJECT SET POINT #1: X.XE-XX
REJECT SET POINT #2: X.XE-XX
REJECT SET POINT #4: X.XE-XX
AUDIO SET POINT: X.XE-XX
OFF
OFF
OFF
ON
ON
REJECT AND AUDIO SET POINTS
BACK
LEAK RATE
OUTPUT
CAL
TRANSFER
LEAK
SET-UP
REJECT &
AUDIO SET
POINTS
AUTO
SEQUENCER
SET-UP
RANGING
SET-UP
CONTROL
SET-UP
NEXT
POINTS
SET-UP
ROUGH
PUMP
SET-UP
DN
UP
NXT
Summary of Contents for 979 Series
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