THORLABS ITC502 Operation Manual page 120

6.4 List of acronyms
LED Light Emitting Diode
LF Line Feed
LLO Local Lockout
LS Laser Source Module
NR1 Numeric Response data of type 1
NR2 Numeric Response data of type 2
NR3 Numeric Response data of type 3
MAV Message AVailable)
MSS Master Summary Status
OTP Over TemPerature
PC Personal Computer
PD Photo Diode
PID Proportional, Integral, Differential (regulator)
P-Share Proportional share
RF Radio Frequency
RMS Root Mean Squared
RQS ReQuest Service Message
SDC Selected Device Clear
SEL SELect
SRE Service Request Enable Register
SRQ Service ReQuest
STB STatus Byte Register
SW Soft Ware
TEC ThermoElectric Cooler (Peltier Element)
TRG TRiGger
TTL Transistor-Transistor Logic
ITC500 / page 112