C A L I B R A T I O N A N D T R O U B L E S H O O T I N G
Calibration Overview
04_09
LDC-3700C Series
139
C H A P T E R
5
Local Calibration of the LDC-3700C Temperature Controller
The following procedure is for calibrating the 100 µA and 10 µA thermistor current
sources so that the thermistor resistance measurement for these ranges will meet
the stated accuracy specifications.
Calibrating the Thermistor
1
Set the
SENSOR
SELECT
switch (back panel) to the 100 µA position, the TEC display
code is --01.
2
Using the multimeter, measure and record the resistance of your metal film resistors. ILX
recommends a 4-point probe resistance measurement.
3
Connect the correct metal film resistor to the sensor input of the Temperature Controller
15 pin connector on the rear panel, and sensor - terminals.
4
Enter the TEC sensor calibration mode by pushing the (
Communications
)
LOCAL
and
(
TEC
DISPLAY
)
R
switches at the same time. The sensor code (
SENSOR
SELECT
switch position) value displays for 2 seconds. After this, the TEC display indicates sensor
resistance in k
.
5
Press and hold in the (
PARAMETER
)
SET
switch and turn the
ADJUST
knob until the
TEC
display indicates the same resistance you recorded for the metal film resistor.
6
Release the (
PARAMETER
)
SET
switch to store the new value into non-volatile memory.
After the (
PARAMETER
)
SET
switch is released, the LDC-3700C Series Laser Diode
Controller will return to its former state (before calibration).
7
Switch the
SENSOR
SELECT
switch (back panel) to the 10 µA position, TEC display
code --02, and repeat this procedure with the 100 k
resistor as the load at the
and Sensor - terminals.
Summary of Contents for LDC-3700C Series
Page 2: ......
Page 8: ...L I S T O F FIG U R E S vi LDC 3700C Series...
Page 10: ...L I S T O F TA B L E S viii LDC 3700C Series...
Page 78: ...RE M O T E O PE R A T I ON Command Syntax 62 LDC 3700C Series C H A P T E R 3...
Page 150: ...C O M M A N D RE F E R E N C E Command Reference 134 LDC 3700C Series C H A P T E R 4...