THORLABS ITC1 Series Operation Manual page 13

Digital Signals
Pin
Temperature Controller
A13 TEC ON control input
A12 TEC ON control output (open collector)
C12 TEMP ERROR output (open collector)
C13 OTP output (open collector)
C14 Digital GND (Common pin for all digital signals)
Laser Diode Current Controller
C15 LD ON control input
A17 TTL MOD input
C16 LD ON control output (open collector)
C18 LIMIT LD control output (open collector)
C17 Interlock
© 2018 Thorlabs GmbH
Function
3 Connecting Elements
Logical Level
H = TEC On
L = TEC on
L = Temperature window exceeded
L = Heat sink over-temperature
H = Laser on
H = Laser on
L = Laser on
L = Laser current limit reached
Interlock = CLOSED when connected
£
to C17 (R 430
W
)
11