Simoco EMEA Ltd SB2K5354O2O2V Manual De Usuario
SGD-SB2025NT-TUM
Jan 12
Page xv
GLOSSARY
GLOSSARY OF TERMS
The following terms are used through out this document.
Term
Meaning
‘……’
Reference to a setting or feature (exactly as it is displayed) that may be
selected or enabled either directly or through a software application, e.g.
‘Button’, ‘Control’, ‘Switch’.
selected or enabled either directly or through a software application, e.g.
‘Button’, ‘Control’, ‘Switch’.
0 V
The internal negative supply line to which the internal circuitry is referenced.
1PPS
A One Pulse Per Second timing signal (timed from the leading or rising edge).
Audio
Frequency
Frequency
A composite audio band signal that may include tones.
CTCSS
A sub-audio tone used for validating a received signal (also known as a PL
tone).
tone).
Closed
Contact
Contact
Connects to the common or pole contact when a relay is not energised (off).
Firmware
The embedded code that makes SB2025 function.
Ground/Gnd
A connection that is the same potential as the chassis or case (earth).
Go/GO
A signal that flows towards the base station Tx.
In
A signal that is entering the SB2025 base station.
Key/Keyed
A signal that can cause transmit mode or the transmit condition itself.
Loader
The software application used to install the Programmable Intelligent
Computer (PIC) Firmware.
Computer (PIC) Firmware.
Open Contact
Connects to the common or pole contact when a relay is energised (on).
Out
A signal that is leaving the SB2025 base station.
PAT
Packet Arrival Time – a value indicating the network latency.
Press To Talk
The action or signal that causes the equipment to be placed into transmit
mode or to be keyed.
mode or to be keyed.
RS422
A balanced/differential line serial data signal.
Return/RTN
A signal that flows from the base station Rx (receive).
SELV
Safety Extra Low Voltage – within the definition used by EN60950.
Sig/Signalling
A state or tone that is used to indicate a defined condition.
TTL
A logic signal where a ‘Low’ is represented by a voltage of less than 0.7 V and
a ‘High’ by a voltage >3 V but ≤5 V.
a ‘High’ by a voltage >3 V but ≤5 V.
Vote/voting
The selection of the best received signal from a collection of signals presented
individually and simultaneously.
individually and simultaneously.