Lake Shore Model 331 Temperature Controller User’s Manual
Interface (Continued)
Use the
s
or
t
key to cycle through the following Terminator choices: Cr Lf, Lf Cr, Lf, or EOI, where
Cr = Carriage Return, Lf = Line Feed, and EOI = End Or Identify. The default terminator is Cr Lf.
Press the
Enter
key to accept the changes and continue to the next screen, or the
Escape
key to keep
the existing setting and return to the normal display.
Select With °®
Emulation Mode 331
Use the
s
or
t
key to toggle between 331 and 330. The default setting is 331. If 331 mode is selected,
pressing the
Enter
key will return you to the normal display.
To support owners of the Lake Shore Model 330 Temperature Controller, 330 Emulation Mode is
provided. The 330 Emulation Mode only affects remote operation; front panel operation of the Model
331 is not changed. In 330 Emulation Mode, curve locations are mapped to match Model 330 locations.
For example, the DT-500-D Curve, found at curve location 3 in the Model 331, is mapped to location 0
when in 330 mode. This applies to the following remote commands: ACUR, ACUR?, BCUR, BCUR?.
The following Model 330 commands are not supported in 330 Emulation Mode: CUID?, CURV, CURV?,
ECUR, KCUR, and SCAL. Please refer to your Model 330 User’ s Manual for any additional questions
concerning remote commands.
Selecting 330 Emulation Mode causes two additional screens to appear.
Select With °®
Sample Channel A
Use the
s
or
t
key to toggle between Sample Channel A or B. The default setting is A. Press the
Enter
key. You will see the following display.
Select With °®
Sample Units K
Use the
s
or
t
key to cycle through the Sample Units: K, C, and Sensor, where K = kelvin,
C = degrees Celsius, and Sensor = volts (V) or ohms (
Ω
). The default setting is K. Press the
Enter
key.
You will return to the normal display.
4.21 DEFAULT
VALUES
It is sometimes necessary to reset instrument parameter values or clear out the contents of curve
memory. Both are all stored in nonvolatile memory called NOVRAM but they can be cleared
individually. Instrument calibration is not affected except for Room Temperature Calibration which
should be redone after parameters are set to default values or any time the thermocouple curve is
changed.
To reset the Model 331 parameters to factory default values, press and hold the
Escape
key until the
screen shown below appears.
Code Date: 06/01/00
Default Values Yes
Operation
4-37
