Encompass 4 Reader System Guide
A-6
MHz megahertz
mode method of operation
ms milliseconds
N
NAK negative acknowledgment (data not valid)
NVRAM non-volatile memory. To save user parameter changes to NVRAM, you must send
command #00 before powering down the reader.
P
passback used to refer to a tag ID that is not passed on to the tag buffer
PC personal computer
PCKS EPROM flash checksum
protocol specified convention for the format of data messages communicated between devices
PRST presence status
PWRB power fail bit
R
RAM random access memory
RDID reader ID
read process of acquiring data from a device; for example, from a tag or from computer
memory
reader controlled interrogating device capable of acquiring data from a device; for example,
acquiring and interrupting data from a tag
read zone the physical area in which a tag can be read by the reader
RF radio frequency
RFID radio frequency identification
RFST RF status
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