Ericsson EDACS Monogram Series, Руководство по обслуживанию

Страница: 9 / 56

AE/LZB 119 1647 R1A
9
INTRODUCTION
The EDACS Monogram Portable Radio is a rugged,
lightweight unit which is housed in a molded Lexan front
assembly and an aluminum rear casting. The radio provides
reliable service in the 800 MHz band and contains new Dual
Format technology that enables the radio to operate within a
GE-MARC trunked system and an EDACS trunked system.
The radio normally transmits in the 806-824 MHz band and
receives from 851-869 MHz. The radio is able to transmit
from 851-869 MHz for Talk-Around in the GE-MARC
system.
The Dual Format EDACS Monogram radio is offered
with several packages available with respect to the number
of systems/groups programmed and the EDACS feature set
allowed. The radio is also capable of Conventional
operation. The Radio is programmed using a Personal
Computer and an Interface Box connected to the UDC
connector on the top panel of the radio. This allows the
radio to be tailored to meet the requirements of the
individual user and of the System(s) it is operating within.
Figure 1 - Portable Radio
STANDARD RADIO FEATURES
Carrier Control Timer (CCT)
The CCT is programmable on a per channel basis and
prevents unnecessary channel traffic and radio damage if the
transmit timer is exceeded. If the programmed timer times
out during a transmission, the radio will beep and stop
transmitting. The beeping tone will continue until the
operator releases the PTT button.
Audio Alert Beeps
The radio generates a number of alert tones to indicate
various events.
Low Battery Alert
When the battery is low and needs to be recharged, the
B will displayed and a low pitch tone will sound every 130
seconds.
Power Up Self Test
Each time the radio is turned on it will perform a
power-up self test. After successful completion of the test,
an optional tone will sound and the current System and
Group/Channel will be displayed. If the unit does not pass
the self test, an error message will be displayed.
CONVENTIONAL FEATURES
Channel Guard provides a means of restricting calls to
specific radios through the use of a Continuous Tone Coded
Squelch System. (CTCSS), or a multi-code Digital Squelch
System (DCG). Tone frequencies range from 67 Hz to 210.7
Hz. There are 83 standard programmable digital codes.
Refer to Table 1 and Table 2.
Manual DTMF Operation
Telephone interconnect calls can be made using the 12-
button keypad. This keypad is enabled when a DTMF
programmed channel is selected and PTT button is pressed.