MAIMAN ELECTRONICS SF8300, Руководство пользователя, Страница: 13 / 27

Maiman Electronics LLC SF8300
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18. How to get started
Unpack the device. The new device is configured with the following values:
Parameter Value
Peltier module current limit (set by digital)
2A
Temperature control (switch TEMP) INT
TEC temperature set (potentiometer TEMP) 10
kOhm
(25
°C)
Laser diode driver current set (potentiometer CURRENT) 0mA
Laser diode driver current control (switch CURRENT) INT
Laser diode driver current protection threshold (potentiometer DRV OC) 1200 mA
For the first time we recommended to connect a dummy load. You can use any diodes that
are suitable for the current you want to operate. Dummy load should be connected as load. LD+ to
the anode and LD- to the cathode.
Please don’t turn on TEC if you have not connected a dummy load to the TEC pins.
Connect the controls (analogue and/or digital).
Connect the power supply (note polarity).
18.1. Interlock
The driver has interlock. This is pin 15 of the analog control connector. If you left this pin
open the driver is in the locked state. This pin must be connected to any GND pin for normal
operation.
The driver and the temperature controller can only be turned on with shorted Interlock.
You can also connect something like an emergency button to this pin.
By default at power up the driver is in the "allow interlock" state.
Via USB you can set the
driver to the "deny interlock" state. At this case the driver will ignore interlock state and can
operate with opened pin 15.
18.2. NTC Interlock
The driver can only be turned on with installed LD. When driver turn on without the installed
LD, the operation and measure values will be incorrect! If it is necessary to turn on the driver
without the installed LD, connect 10kOhm resistor to thermistor pins (2nd and 5th) on LD mount.
18.3. Change the current limit on the Peltier module
If it is necessary, the level of current limit on the Peltier module can be changed before
connecting the laser diode using digital control connection (see paragraph 20).
18.4. Change the current protection threshold of the driver
If it is necessary, the current protection threshold can be changed before connection of a
laser diode. Make sure that the jumper DRIVER SHORT is installed. CURRENT control selector must
be in the INT position to use the CURRENT potentiometer.
Connect the measuring instrument to the «Driver Current Monitor» pin.
If it is necessary to increase the limitation level, turn the potentiometer DRV OC clockwise
for a few turns.