Lake Shore 372, Руководство пользователя, Страница: 128 / 214

116 c
HAPTER
5: Advanced Operation
Model 372 AC Resistance Bridge and Temperature Controller
2. Use the Number Entry method to edit the value. Refer to section 4.2.1.1 for
details on the Number Entry method.
3. Once the new sensor value is entered, press Enter to highlight the temperature
value.
4. Use the Number Entry method to enter the new temperature value.
5. Press
Enter at this point to store the new breakpoint pair.
6. Press Escape at any time when a sensor or temperature value is highlighted to
cancel any changes to either of the values and return the highlight to the break-
point number.
If the sensor value entered is not between the previous breakpoint sensor value and
the following breakpoint sensor value, then the new breakpoint pair will be moved to
the position in the curve that bounds the sensor value of the new breakpoint pair. If
the pair is moved, a message will be displayed to indicate to the location to which the
breakpoint pair was moved.
Menu navigation:
Curve Entry
Q
Edit Curve
Q
( 21–59 )
Q
Curve Points
Q
( 1–200 )
Interface command:
CRVPT
5.7.1.2 Add a New Breakpoint Pair
The last breakpoint of a curve is signified by the first pair that contains a 0 value for
both the temperature and sensor portions. Curves are limited to 200 breakpoint
pairs, so if 200 pairs already exist, then the 200th pair will be the last pair in the list.
To add a new breakpoint pair to a curve that has less than 200 pairs, scroll to the end
of the list and edit the 0 value pair by following the procedure for editing a breakpoint
pair in section 5.7.1.1. If the curve still contains less than 200 pairs, a new 0 value
breakpoint will be added to the end of the list for entering another new
breakpoint pair.
Menu navigation:
Curve Entry
Q
Edit Curve
Q
( 21–59 )
Q
Curve Points
Q
(1–200)
Interface command: CRVPT
5.7.1.3 Delete a Breakpoint Pair
To delete a breakpoint pair, scroll to the desired breakpoint number, then enter a 0
value for both the sensor and temperature values by following the procedure for edit-
ing a breakpoint pair in section 5.7.1.1.
If you are not entering 0 for both sensor and temperature values, then entering new val-
ues over an existing breakpoint pair will replace that pair with the new value when you
press Enter.
After editing, adding, or deleting all desired breakpoint pairs, press Escape (Exit
Menu) while the highlight is on a breakpoint number. All breakpoint pair changes,
additions, and deletions will be saved when exiting the menu.
When curve entry is complete, you must assign the new curve to an input. The
Model 72 does not automatically assign the new curve to any input. Refer to
section 4.4.12 for details on assigning a curve to a sensor input.
FIGURE 5-6 Left: Scroll to highlight a breakpoint number; Middle: Press the enter key to highlight the sensor value of the selected pair;
Right: Press the enter key again, and the temperature value is highlighted