Clear-Com 4000 II Series User Manual

Technical Manual Issue 2.1 4000 Digital Series II
Page xii STA0381
NID Non Intrusive Download
NVRAM Non-Volatile Random Access Memory
O/P Output
PCB Printed Circuit Board
Pot. Potentiometer
PSU Power Supply Unit
RAM Random Access Memory
RCU Rear Connector Unit
RJ45 Standard connector for data communications
(used with CAT5 cabling for comms. between
the matrix and control panels)
RMS Root Mean Square
RU Standard Rack Unit (19 inches wide x 1.75
inches high or 482.6mm x 44.45mm)
Side Tone Side tone is the audio, which is heard in the
Headset's earpiece, which is generated by the
headset microphone. This allows the operators
to hear themselves when using headsets.
SPDT Single-Pole-Double-Throw (switch / relay action)
SPST Single-Pole-Single-Throw (switch / relay action)
TA Terminal Adaptor
Talkback A Broadcast term referring to intercom systems
in which 4-wire comms. are used.
Talk Route An audio route from the Control Panel to another
destination. The audio is normally generated
from the Control Panel's main microphone or
Headset microphone.
TBU Telephone Balance Unit
VOX Voice Operated Switch
XLR Audio industry standard connector

Clear-Com 4000 II Series Specifications

General

Brand	Clear-Com
Model	4000 II Series
Category	Control Panel
Language	English