Lake Shore Model 340 Temperature Controller User’s Manual
4-6
Front Panel Operation
Key Definitions (Continued)
Key Description
Escape
Return a parameter to its original value during parameter entry.
Up (
s
)
Toggle a parameter or selects a setting from a list.
Down (
t
)
Toggle a parameter or selects a setting from a list.
Enter
Completes the operation of setting a value during parameter entry.
Cancel Screen
Returns parameters in a setting screen to pre-setting values.
Previous Screen
Moves to the previous parameter location within a setting screen.
Next Setting
Moves to the next parameter location within a setting screen..
Save Screen
Saves new parameter values in a setting screen.
More
Shows additional parameters that do not fit on one setting screen.
Local
Toggles the IEEE-488.2 Interface between remote and local modes.
Data Card
Displays the
DATACARD
screen. Allows the user to select Data Logging,
Read DataCard, Write DataCard, and Erase DataCard. Datacards are useful
for transferring temperature response curves, storing and restoring instrument
parameters and internal programs, and updating main processor software.
Help
Displays a help screen for the highlighted parameter.
4.5 CHANGING DISPLAY FORMAT
The Model 340 lets the user decide which information is shown on the display. This section discusses the
display fields that can be configured using the
Display Format
key.
4.5.1 Number of Readings Displayed
The Model 340 can display between one and eight input readings at a time. If one to four readings are
chosen, they will be shown with the large characters. If five to eight readings are chosen, they will be shown
with small characters.
To change the number of display readings, press the
Display Format
key. You will see the
Reading Display
Format
screen with the current number of
Input Displays
highlighted. Use a number key or the
s
or
t
key
to select the desired number of reading displays, then press the
Enter
key. The lower portion of the setting
display will now show the available display fields ready for the operator to enter a sensor input and reading
source. The default setting is 2.
4.5.2 Sensor
Input
The Model 340 has two sensor inputs, A and B. More sensor input can be added with Model 340 options.
Input A can be used to monitor more than one sensor with the use of an external scanner. Scanner support is
covered in Paragraph 5.4.
To select a sensor input for a display field, press the
Display Format
key. You will see the
Display Format
screen with the current number of
Input Displays
highlighted. Use the
Enter
or
Next Setting
key to select
the display number, then use the
s
or
t
key to select the desired input. Then press the
Enter
key. A sensor
input can appear in as many reading fields as desired. The default setting is A and B.