MOGlabs DLC202, Руководство пользователя, Страница: 31 / 82

3. Operation
3.1 Simplest configuration
In the simplest application, the
MOG
labs
DLC
will be used to control
the diode injection current, and temperature. Thus the
DLC
must be
connected to the diode, a thermoelectric Peltier cooler (
TEC
), and a
temperature sensor (fig. 1.1).
All connections are via a single cable. A laser head interface board
includes protection relay and passive protection filters, a laser-on
LED
indicator, and
MOLEX
connectors for the diode,
TEC
and sensor
(either 10 kΩ thermistor, AD590 or AD592). The laser head board
can be fitted to the supplied laser head panel. See appendix F for
further information.
To operate in passive configuration:
1. Connect the diode,
TEC
and sensor to the laser head board
(fig. 1.1) using the provided
MOLEX
2- and 3-pin connectors.
Please note the polarities.
2. Adjust the temperature setpoint: first select
Temp set
on the
display selector, then adjust T
set
via the front-panel trimpot.
3. Ensure the power is on, and the
STANDBY
/
RUN
switch is on
STANDBY
. In this mode, most circuits will be switched off, in-
cluding much of the main internal board, low and high voltage
DC
supplies, photodetector, piezo and diode outputs. On first
power-up, the
STANDBY
indicator will be red; this is normal.
The switch should be set to
RUN
to initiate temperature con-
trol.
4. Switch from
STANDBY
to
RUN
. The indicator should change
from red (if just powered up), or orange, to green. If the indi-
cator is not green, the
TEC
or sensor is not correctly wired. In
RUN
mode, all electronics will be powered up, except for the
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