Pacific Research Solutions PET-820 User Manual
Page 57
Pacific Research
PET-820 User Manual
Page 56
PROGRAM AUTHORIZATION CODE: A programmable code that allows access to programming or changing
characteristics of the system.
PROGRAM COMMAND CODE: A code that identifies the feature or function in which you wish to alter.
RAM: Random Access Memory. This is a type of computer memory that is used to store both temporary and long term
data. In the PET-820, this memory is battery backed which means that when the power is removed the, the system will still
retain its data.
READ BACK: A voice response from the PET-820 due to an operation from the user.
RTC: Real Time Clock. This is a hardware function separate form the microprocessor which keeps track of time and date.
Time and date could tracked by the microprocessor, but power would have to be maintain on the system in order not to lose
time. In the PET-820, the RTC is powered by a battery so that the time and date will not be loss.
SINGLE ENDED: A signal where one side of the connection is at zero volts and can be connected to ground. The
equipment will measure the other connection's voltage in reference to ground or zero volts.
SYNTHESIZED SPEECH: A method of generating synthetic speech, typically from some type of computer or
microprocessor.
TOGGLE: To change state, turns on if off or turns off if on.
TOUCH TONE: Used by telephone systems for dialing a telephone number.