ILX Lightwave LDC-3700 Series User Manual

When the unit is powered-up, the parameters will automatically be restored to the same
values that were present at the last power-down. Furthermore, all of the saved setups
\+dl be "remembered", and easily recalled.
2.4.1.2 TEC Functions
This section gives a brief synopsis of the TEC controller sections on the LDC-3700 Series Laser Diode Controller
front panel
I I
c ll,
SELECT
1_?1
}I TEC DISPLAY -q
T R In SET
TEC PARAMETER LASER
S@.ECT
.
TEC
I
- c TEMP LIMT z TE CURRENT Lwn
-100% ln C SENSOR OPEN 3 T€ MODULE OPEN
The TEC MODE section is used to turn the TEC output onloff and select the output
control mode. Repeatedly pressing the (TEC MODE) SELECT switch cycles through
the constant temperature (T),
resistancellinear sensor reference
(R), or TE current (ITE)
control modes. The LED indicators show the selected mode. (For more information, see
Section
2.7).
The TEC DISPLAY switch section is used to select the measured T, R, or ITE values
or the set point value. The set point is'determined by the TEC MODE selection. (For
more information, see Section 2.8).
When the (ADJUST) TEC mode is selected, the TEC set point may be displayed and
adjusted (automatically) by simply turning the ADJUST knob. (For more information,
see Section 2.6.1).
The
TEC parameters are TE current limit (LIM ITE), high temperature limit (LIM
THI). constants (CONST) for converting from sensor measurements to temperature,
and control loop gain (GAIN). (For more information, see Section 2.9).
When the
CONST parameter is selected, the constants C1, C2, and C3 are sequenced
by pressing the
(PARAMETER) SELECT switch, and the corresponding indicator on
the bar graph will become lit.
The
TEC display is used to show TEC control (measured and set point) and parameter
values. It may also display errors which relate to
TEC operation.
The
TEC error indicators become lit when the corresponding TEC conditions occur.
(For more information, see Section 2.10).
The
Bar graph is used to display the TEC output as a percentage of TEC current limit
(LIM
1~~) value. It is also used in conjunction with the (TEC) CONST parameter to
indicate which constant is being displayed on the
EC display. (For more information,
see Section 2.7).
Conditions Which Will Automatically Shut Off the TEC OUTPUT
"-, 3
H~gh Tcniperature L~rn~t ,CfJ
TEC In~erlock D~sabled (see Sect~on 5 7 2)
7
Booster Changed (Wh~le Output On), (see Section 5 8)
,"). 'i
Sensor Open (Wh~le Output On)
1
TEC Module Open (While Output On)
SENSOR SELECT Sn.ilch Moved (While Output On)
Sensor Shorted (While Output On)
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ILX Lightwave LDC-3700 Series Specifications

General

Brand	ILX Lightwave
Model	LDC-3700 Series
Category	Controller
Language	English