Wavelength Electronics LFI-3751, User Manual

Page: 43 / 132

Chapter 2 - Front Panel Operation
Controlling Temperature with RTDs
43
2
6. Entering Data Pair - C
•
Rotate the Display Select Switch to C ( Shift Button ON )
to display the third data pair.
•
Rotate the Digi-Pot Adjust Knob to adjust each value
as it is displayed.
•
A, B, and C cannot be adjusted while the output is on.
•
Data pairs A , B , and C are saved in non-volatile memory.
•
RS-232 Command: [C1] = T
2
, [C2] = R
2
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
Adjust C
Enter T
2
[C1]
Enter R
2
[C2]
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
°
C
SHIFT
7. Displaying Actual RTD Temperature
•
Rotate the Display Select Switch to ACT T ( Shift Button
OFF ) to display the RTD temperature.
•
RS-232 Command: [ACT T]
8. Displaying Actual RTD Resistance
•
Enter (1.000, 1.000) for A and (0.000, 0.000) for B to have
the LFI-3751 display RTD resistance (k
Ω
) when the Display
Select Switch is rotated to ACT T ( Shift Button OFF ).
•
RS-232 Command: [ACT R]
Ω
P ACT T
LIM I
AUX T
TE V
SET T
TE I
B
C
I
A
D
k
SHIFT
-199.9
-19.99
100.0
to
to
to -20.0°C
99.99°C
199.9°C
0
10.00
100.0
to
to
to 9.999 k
Ω
99.99 k
Ω
499.9 k
Ω
Display Actual RTD Temperature
Display Actual RTD Resistance
Display Resolution:
Temperature
Resistance
-199.9
-19.99
-1.999
10.00
100.0
0
10.00
100.0
to
to
to
to
to
to
to
to -20.0°C
-2.00°C
9.999°C
99.99°C
199.9°C
9.999 k
Ω
99.99 k
Ω
499.9 k
Ω
Display Resolution:
Display Resolution: