8M093X01 R1.0
46
Glossary
Keyword
Description
AVRA
Automated VR Activation.
DVR-LX option which permits automated activation of the
DVR-LX by either using a VIP input on the MSU CH / DEK or a
pin on the DVR-LX Auxiliary cable. Requires external logic /
switch (not provided).
CH
Control Head.
Channel
The communication path between DVR-LX and PSU, or MSU
and Conventional System
.
Cross-band
DVR-LX operates in a different frequency band than all of the
System frequency bands.
DEK
Direct Entry Keyboard.
Duplex
Data/voice can flow in two directions at the same time. DVR-
LX can transmit and receive simultaneously.
DVR
Digital Vehicular Repeater.
DVRS
When a DVR-LX is interfaced with an MSU, the complete
equipment package is referred to as a Digital Vehicular
Repeater System (DVRS).
FCC
Federal Communications Commission.
Flat
DVR-LX components are provided individually allowing for a
lower profile installation.
FRC
Futurecom Repeater Configurator.
Programming software application for the DVR-LX.
In-band
DVR-LX operates in the same frequency band as a system
frequency band.
ISED
Innovation, Science and Economic Development Canada.
LOC
Local Mode: DVR-LX
mode which allows repeated communication
between the local PSUs and MSU. If configured, can also monitor
activity on the selected MSU channel.
Mode
MSU
– Talk group or channel
DVR-LX
– Determines the communication exchange
capabilities between System Users and Local Portable Users;
Can be set to OFF, LOCAL or SYSTEM.
MPE
Maximum Permissible Exposure.
MSU
Mobile Subscriber Unit.
P25
Standards for interoperable digital two-way radio products.
Primary
This DVR-LX is responsible for all communications in its coverage
area. All other DVR-LXs in the coverage area are in Secondary
state.
PSU
Portable Subscriber Unit.
RF
Radio Frequency. Part of the general frequency spectrum
10kHz - 10,000,000 MHz.
RX
Receive.
Secondary
This DVR-LX is not responsible for communications. There is a
Primary DVR-LX already present in the coverage area.
Simplex
Data/voice can only flow in one direction at a time. DVR-LX
can either transmit or receive at one time.
