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
140
LDC-3700C Series
C H A P T E R
5
AD590 Sensor Calibration
This procedure is for calibrating the AD590 sensor so that the temperature
measurement is as accurate as possible.
1
Set the
SENSOR
SELECT
switch (back panel) to the
AD590
position, the TEC display
code is --04.
2
Connect a precision 16.8 k
(metal film) resistor and multimeter in series at the sensor
input of the Temperature Controller 15 pin connector on the rear panel, and
Sensor - terminals. Configure the multimeter to measure current in µA.
3
Enter the TEC sensor calibration mode by pushing the (
Communications
)
LOCAL
and
(
TEC
DISPLAY
)
R
switches at the same time. The TEC display will become blank for 2
seconds, then the sensor code (
SENSOR
SELECT
switch position) value will be
displayed for 2 seconds. After this, the TEC display will indicate sensor reference current
in
µA
(not annunciated)
.
4
Press and hold in the (
PARAMETER
)
SET
switch and turn the
ADJUST
knob until the
TEC display indicates the same current as shown on the multimeter.
5
Release the (
PARAMETER
)
SET
switch to store the new value into non-volatile memory.
After the
SET
switch is released, the LDC-3700C Series Laser Diode Controller will return
to its former state (before calibration).
LM335 Sensor Calibration
The following procedure is for calibrating the LM335 sensor so that the
temperature measurement is as accurate as possible.
1
Set the
SENSOR
SELECT
switch (back panel) to the
LM335
position, the
TEC
display
code is --03.
2
Connect a precision 6.8 k
(metal film) resistor and the multimeter in parallel to the
sensor input of the Temperature Controller 15 pin connector on the rear panel,
and Sensor - terminals. Configure the multimeter to measure voltage in mV.
3
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 will be displayed for two seconds. After this, the TEC display will
indicate sensor reference voltage in mV (not annunciated).
4
Press and hold in the (
PARAMETER
)
SET
switch and turn the
ADJUST
knob until the
TEC
display indicates the same voltage as shown on the multimeter.
5
Release the (
PARAMETER
)
SET
switch to store the new value into non-volatile memory.
After the
SET
switch is released, the LDC-3700C Series Laser Diode Controller will return
to its former state (before calibration).
Summary of Contents for LDC-3700C Series
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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...