Waters 2489, Overview And Maintenance Manual

Page: 65 / 150

June 11, 2015, 715004752 Rev. A
Page 65
3.2.5.3 Setting pulse periods
You use the third Configuration screen (see page 63 ) to set pulse or signal width or to
activate a pulse or rectangular wave on SW1 or SW2.
• Single pulse (in seconds) – If SW1 or SW2 is programmed to generate a pulse
as a timed or threshold event, then the period of the signal (single pulse width)
is as specified in this field (range is 0.1 to 60 seconds).
• Rectangular wave (in seconds) – If SW1 or SW2 is programmed to initiate a
rectangular wave as a timed or threshold event, then the period of the signal
(the width of one pulse period in a rectangular wave or pulse train) is as
specified in this field (range is 0.2 to 60 seconds).
The figure below shows the difference between a single pulse and a rectangular wave.
Figure 3–11: Set the pulse period or signal width using SW1 or SW2
3.2.5.4 Setting the display contrast
The Contrast function allows you to adjust the contrast of the detector’s display
screen. When you press the Contrast key (Shift 6), the Display Contrast screen
appears.
Figure 3–12: Display Contrast screen
Use the
s
and
t
keys to adjust the contrast of the display.
3.2.5.5 Displaying system information
The System Info key (Shift 4) displays information about the detector including the
serial number and the firmware version number.
n Seconds
n Seconds
Single pulse
Rectangular wave