Wavelength Electronics LFI-3751, User Manual

Page: 38 / 132

7. Displaying Actual Thermistor Temperature
•
Rotate the Display Select Switch to ACT T ( Shift Button OFF ) to display
the thermistor temperature.
•
RS-232 Command: [ACT T]
Chapter 2 - Front Panel Operation
Controlling Temperature with Thermistors
9. Adjusting Thermistor Temperature Setpoint
10. Adjusting Thermistor Resistance Setpoint
•
Rotate the Display Select Switch to SET T (Shift Button OFF) .
Temperature will be displayed.
•
To adjust the setpoint, rotate the Digi-Pot Adjust Knob . While the knob
is rotating, the display will change, but the instrument will not control to
the new setpoint until the knob stops moving.
•
The decimal point will move to display maximum resolution.
•
SET T is saved in non-volatile memory.
•
RS-232 Command: [SET T]
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
°
C
decrease
increase
Ω
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
k
decrease
increase
•
Rotate the Display Select Switch to SET T (Shift Button OFF) . If (0.000,
0.000) has been entered for A , resistance will be displayed.
•
To adjust the setpoint, rotate the Digi-Pot Adjust Knob . While the knob
is rotating, the display will change, but the instrument will not control to
the new setpoint until the knob stops moving.
•
The decimal point will move to display maximum resolution.
•
SET R is saved in non-volatile memory.
•
Temperature Limits are disabled in Resistive Operating Mode.
•
RS-232 Command: [SET R]
38
Display Resolution
-199.9
-19.99
-1.999
10.00
100.0
to
to
to
to
to -20.0°C
-2.00°C
9.999°C
99.99°C
199.9°C
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
°
C
SHIFT
8. Displaying Actual Thermistor Resistance
•
Enter [0.000, 0.000] for A to have the LFI-3751 display thermistor
resistance (k
Ω
) when the Display Select Switch is rotated to ACT T
( Shift Button OFF ).
•
RS-232 Command: [ACT R]
0
10.00
100.0
to
to
to 9.999 k
Ω
99.99 k
Ω
499.9 k
Ω
Display Actual
Thermistor Temperature
Display Actual
Thermistor Resistance
Display Setpoint Resistance
Display Setpoint Temperature
Display Resolution
Ω
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
k
SHIFT