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ITC4000 Series
3.3 LD Output Configuration
In the Laser Output configuration you can set the polarity of the driven laser diode, the switch
on delay time, the laser voltage protection and the inhibit input mode of the "LD Enable" input.
Polarity:
The laser polarity can be chosen between anode grounded (AG) and cathode grounded (CG).
Attention
Take care to select the proper polarity for the connected laser diode. A wrong polarity may
damage the laser diode.
Switch-On Delay:
With the CDRH Compliant Switch-On Delay option you can choose the time delay between
pressing the "LD-ON" key and the point in time the laser output is switching on. A time delay
from 0 til 60s is selectable. The default value is 3 seconds. This feature is required to conform
several government requirements like the CDRH US21 CFR 1040.10.
Voltage Protection:
The voltage protection is an additional protection feature for the laser diode. It is recommended
to set the voltage protection about 0.5V higher than the nominal laser voltage. If the protection
voltage is reached the laser output will be switched off. Protection voltages setting range is
·
1 to 11 V ( ITC4001, ITC4020)
·
1 to 17 V (ITC4002QCL)
·
1 to 12 V (ITC4005)
·
1 to 20 V (ITC4005QCL)
Inhibit Input Mode:
The Inhibit input mode predefines the behavior of your ITC4000 when using the "LD ENABLE
IN" BNC jack as an error signal input. You can choose between:
None
no action
Output enable the laser output is switched off during a failure and will be switched on auto-
matically, when the error condition will be fixed.
Protection
the laser output is switched off and can only be switched on by pressing the
"LD ON" key again
