Waters 2414, Overview And Maintenance Manual

Page: 66 / 130

June 11, 2015, 715004754 Rev. A
Page 66
Chart Mark – Causes a
momentary pulse to the analog
output. This key has no effect if
chart mark is disabled on Home
screen 4.
Polarity – Changes the algebraic
sign of the output signal. Current
polarity is indicated by icon.
Auto Zero – Sets the RIU offset
so that the outputs, read 0 RIU.
This key has no effect if Autozero
is disabled. You can enable or
disable the Autozero function key
from the fourth Home screen
(Figure 5–6).
N/A
Run/Stop – Starts or stops the
current method. The elapsed
time appears near the lower right
side of the Home screen.
Reset – Resets the detector run
clock to zero minutes. Returns
the detector to initial conditions
for the current method.
s
,
t
– On screens with entry fields (edit, check box, or choice list),
the active field has a thickened border. Use the arrow keys to make
a different field active. (
s
moves up or left;
t
moves down or right.)
On screens with a scrollable list, these keys move the highlight up
(toward the beginning of the list) or down (toward the end). Other
screens can have special instructions for the use of the
s
and
t
keys
(for example, the Display Contrast screen).
Next – Displays a screen with
additional options related to the
current screen. Repeated
pressing of this key always brings
back the original screen. On most
screens where this key is active,
the NEXT arrow appears in the
lower-right corner of the display.
Previous – When the Next key is
available, the “previous” function
lets you navigate through the
screens in the reverse order.
TEMP °C – The page where you
set detector oven and column
heater module (CHM)
temperatures. The allowable
values (set points) for the
detector oven is 30 to 55
°
C. For
the column heater module, it is
30 to 150
°
C.
The minimum stable set point is
typically 5
°
C above the ambient
temperature
METHOD – Displays the list of
options for creating, storing,
retrieving, and resetting
methods, which contain timed
and/or threshold events.
DIAG – Displays the choice list of
diagnostic routines.
CONFIGURE – Displays the first
Configuration screen.
Table 5–1: Keypad description (continued)
Key
Description
Unshifted Shifted
Polarity
Chart Mark
Auto Zero
Reset
Run/Stop
Previous
Next
METHOD
TEMP
°
C
CONFIGURE
DIAG