14
Analog Interface Connector:
BNC & 15 pin D-sub receptacle
Pins 1 & 2:
(Analog Input+, Analog Input-)
External analog input. The BNC is in
parallel, but isolated by two 1k
Ω
resistors. Either of the inputs can be used, but not
simultaneously.
Pins 3 & 4:
(In, Interlock-)
These pins must be shorted to turn the output
on. The interlock is required by the FDA 21 CFR section 1040.10 and 1040.11 for
operation of Class IIIB and IV lasers. The laser diode current output cannot be
enabled if these pins are not shorted (the resistance between pins must be less than
5k
Ω
).
Pins 5 & 6:
(Error+, Error-)
Connect to LFI-3500 temperature controller. If the
temperature controller is disabled for any reason, the laser diode driver output will
be disabled.
Pin 7:
(Error Detect)
Error status.
Pin 8:
(On/Off Detect)
On/Off status.
Pin 9:
(Common)
Common for pins 7, 8, & 10 .
Pin 10:
(Remote On/Off)
Remote On/Off control input.
Pin 11:
(PD I)
Photodiode current monitor.
Pin 12:
(LD I)
Laser Diode current monitor.
Pin 13:
(Forward Voltage- V
f
)
Monitors voltage across laser diode
Pin 14:
(Limit I)
Limit current monitor.
Pin 15:
(Monitor Common)
Common for pins 11-14.
9
15
1
8
INPUT
ANALOG INTERFACE
ANALOG
50
Ω
Terminator