Lake Shore 321-01 User Manual
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Contents
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Lake Shore Model 321 Autotuning Temperature Controller User’s Manual3-20 Operation3.4 INTERFACE AND MISCELLANEOUS FUNCTIONSThe following front panel keyboard function are related to the thermometry or temperature controlaspects of the Model 321.Function ParagraphBaud ..............................3.4.1Analog Out.....................3.4.2Defaults/Reset...............3.4.3PUP ...............................3.4.43.4.1 BaudIf using the Serial Interface, the use must set the Baud rate. Pressing the Baud button brings up thefollowing display.Use either the s, t, or Baud button to cycle the selector arrow (→) between choices. The availableselections are 300 or 1200 Baud, with 300 being the default. Press Enter to accept the new Baudrate or Escape to return the normal display and retain the old setting. Other communicationparameters are fixed as listed in Table 4-1.3.4.2 Analog OutThe Analog Output provides a 0 to 10 volt (1 mA max) output that corresponds to the temperaturereading. The default analog output has the 0 to 10 volts corresponding to 0 to 1000 K. The resolutionis 1.22 mV (0.122 K) and the accuracy is ±0.04% of full scale output + measurement accuracy. Theuser also has the option to rescale the analog output; assigning new temperatures (in kelvin) tocorrespond to 0 and 10 V (minimum temperature resolution is 0.1 K).To program the analog output, press the Analog Out button. You will see the following display.The default selection is default, where the 1 to 10 volt output will correspond to 1 to 1000 K. Adifferent (narrower) temperature range may be selected by using either the s, t, or Analog Outbutton to cycle the selector arrow (→) to User. Upon pressing the Enter button, you will see the EnterMaximum display. For this example, we will use the numeric keypad to enter a maximum temperatureof 300 K. After making this entry, you should see the following display.Press the Enter button. The Enter Minimum display will now appear. For this example, we will use thenumeric keypad to enter a minimum temperature of 2 K. After making this entry, you should see thefollowing display. |
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