Varian 990 dCLD II, Operation Manual

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Model 990 dCLD II Component Leak Detector
4-17
4.6.5.1 Bar Graph Display Set-Up
Touch the LINEAR BAR GRAPH DISPLAY toggle box to switch the bar graph display
between LOG BAR GRAPH DISPLAY mode and LINEAR BAR GRAPH DISPLAY mode.
Note, this change is effective immediately upon selection.
4.6.5.2 Leak Rate Analog Output Voltage Selection
Touch the LEAK RATE OUTPUT selection box located at the left of Output Control Set-Up
screen to switch the output voltage at the I/O port (J3 or J4) on the back of the control unit
among the selections listed below.
LINEAR ANALOG
OUTPUT Touch the box to switch between LINEAR ANALOG OUTPUT or
LOG output voltage selections, which are 1V/DEC LOG, 2V/
DEC LOG and 3V/DEC LOG.
Convert the voltage to the leak rate using the appropriate chart in Section 3.7 “Analog Leak
Rate Output Voltage” on page 3-21.
4.6.6 Zeroing
Touch the ZEROING SCREEN box to display up the Zeroing screen shown in Figure 4-15.
Figure 4-15 Zeroing Screen
Touch the AUTO-ZERO<0 box to switch AUTO-ZERO<0 between ACTIVE and INACTIVE
states. Touch BACK to return to the Main Menu. Note, this change is effective immediately
upon selection.
BACK
LEAK RATE
OUTPUT
CAL
LEAK
SET-UP
REJECT &
AUDIO SET
POINTS
RANGING
SET-UP
CONTROL
SET-UP
TO
SERVICE
MENU
ZEROING
SCREEN UNITS
SET-UP
ZEROING
BACK
AUTO-ZERO
<Ø
ACTIVE