Leica Official Manual for Operating the CM1950 Projection Television

8.Working with the Instrument

Programming the specimen temperature

•Select the desired temperature of the specimen.

•The specimen temperature is set and indicated on the control panel marked with the specimen head symbol.

The actual temperature is the standard indication.

Briefly pressing the "+" or "-" button displays the target temperature.

Set the desired value via the "+" / "-" buttons. Pushing the "+" or "-" button for more than 1 sec. increases or decreases the specimen temperature continuously.

The actual value will be indicated 5 seconds after finishing the program- ming.

Caution:

The specimen head and Peltier do not switch on until the chamber temperature reaches -5°C, in order to prevent icing.

Specimen temperature - "Max-Cool" function

•The snowflake button for the Max-Cool function is in the panel with the

specimen head symbol.

Pressing the button sets the lowest possible specimen head tem- perature (-50°C) as the target temperature. The instrument adjusts the maximum low temperature of the specimen head, i.e. -50°C.

•Push the snowflake button again to stop the "Max-Cool" function.

The temperature adjusts to the value programmed prior to activating the "Max-Cool"-function.

•Alternate flashing of "LL" and the actual temperature indicates activa- tion of the Max-Cool function.

Setting the time

•The clock time is set with the +/- buttons in the control panel marked with the clock symbol.

To do so, set the current time using the "+" or "-" button below the small clock symbol.

Pushing the "+" or "-" button for more than 1 sec. increases or decreases the time continuously (auto-repeat function).

38 Operating Manual V1.1 – 05/2007