4. Set Stir Amplitude
This menu item displays the current sample stir amplitude setting and
allows the setting to be changed.
1. At “Set Stir Amplitude”, press START to display “Amplitude =
xxx”.
2. At “Amplitude = xxx”, look across the tip of the stir/freeze wire
from the side to view and estimate the sample stir vibration
amplitude. If properly adjusted, the stir/freeze wire should
vibrate principally fore and aft and should never strike the probe.
The recommended stir amplitude adjustment procedure may be
found in Chapter 5, Troubleshooting and Service. Pressing >
increases the stir amplitude; pressing < decreases the stir ampli-
tude.
3. Press ENTER to store the new setting (or STOP to restore the
original setting).
5. Set Date/Time
This menu item enables changing the date/time format and resetting the
date and time.
At “Set Date/Time”, press START to display the current date and time.
Any change must be made in this order:
1. Use < to toggle to the date format you require (“mm/dd/yy” or
“dd/mm/yy”).
2. Use > to toggle to “24hr” format, “am” or “pm”, as required.
3. Press CLEAR to clear the entire setting.
4. Enter the current date and time (including zeros), via the numeric
keypad, one digit at a time from left to right. Time must be
entered in 24-hour format.
5. Use > to toggle “24hr” format to “am” or “pm”, as required.
28
Advanced
®
Cryoscope Model 4250 User’s Guide
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