Ericsson LBI-38756 manual Service Aids, Detailed Type 99 Operation Programming, Battery Power

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LBI-38652

LBI-38652

 

 

ceived and optionally de modulated by the repeater as part of the system protocol when so installed.

Receive-Only Operation

Channels can be programmed to receive-only operation. Channels cannot be programmed for Transmit-only operation.

Busy Channel Lock Out

With Busy Channel Lock Out programmed, the radio can- not transmit on a channel already busy. If the channel is busy, fast pulsing beeps will sound (without stopping), until the PTT switch is released. The radio must be programmed for, and re- ceiving, the correct Channel Guard. The combination of Chan- nel Guard and Busy Channel Lock Out prevents the user from talking on a channel that is already in use (busy).

When the Busy Channel Lock Out option is enabled with- out programmed Channel Guard, the user is prevented from transmitting over a channel until there is no carrier present in the channel.

Minimum Volume Level

The Front Panel VOLUME controls permit adjustment of the audio level. Minimum levels are programmable. This fea- ture prevents missed calls due to a low volume level.

Power Level

Incremental transmitter power level change can be pro- grammed to permit setting the output power to rated value. The selected power level will be used for all channels.

Channel Guard

Channel Guard provides a means of restricting calls to spe- cific 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.

The Channel Guard tone frequencies and codes are soft- ware programmable. Both tone frequencies and digital codes may be mixed on each channel. The frequencies and codes are shown in Tables 1 and 2. A Channel Number display that does not flash, indicates that Channel Guard is enabled, or that Channel Guard is not programmed. A flashing Channel Num- ber indicates that Channel Guard is programmed and disabled.

EXTERNAL SPEAKER (Optional)

The power connector provides a place to connect an exter- nal speaker. The internal speaker must be disconnected when an external speaker is used.

BATTERY POWER

The vehicle 12 volt battery with negative ground is all that is required for operation of the radio. A cable connects the bat- tery to a male connector mounted on the back of the radio. The radio can also be powered with the vehicle ignition switch.

EASY ACCESSIBILITY

The radio circuitry is mostly contained on a single Main Board, with the exception of the PA Board and the Front Panel Board. Access to the Main Board and the inside of the radio is easy with the removal of the top and bottom covers with two screws each. Then the few adjustment controls (most are ad- justed with PC programming) can be easily reached. Four more screws will permit removal of the front panel, giving access to the Front Panel Board along with the switch and indicator cir- cuitry.

SERVICE AIDS

∙Test Handset Kit (SPK9024), includes Handset (19A706965P3) and Coiled Cord (19D901619P2)

∙Test Adapter Box (TQ0618)

∙Programming Cable (TQ3361)

∙PC Programming Adapter (TQ3310)

∙Power Contact Extraction Tool (458994-2)

DETAILED TYPE 99 OPERATION

AND PROGRAMMING

The original Type 99 programming provides individual, group and super group call decode. The motorola format two- tone sequential signaling schemes can also be decoded.

The MDS Conventional radio can be PC programmed with up to two separate tables of tones. Either the GE Type 99 for- mat or the Motorola format can be assigned to each tone table. The tone decoder (Individual, Group and Quick Call for the Motorola format) can be enabled individually for each channel. Once enabled, one of the two tone tables can be selected for each channel.

The Group Call format allows communication with all

Table 1 - Channel Guard Tone Frequencies

radios within a subgroup. The Super Group Call in GE tone

 

systems) or Quick-Call (in Motorola tone systems) allows

 

communications between all radios in a system.

 

The MDS Conventional radio can operate in either the

 

Type 99 Select Mode or the Type 99 Monitor Mode. In the

 

Type 99 Select Mode the speaker audio remains muted until

 

the user’s own Type 99 code is decoded, unmuting the audio

 

and permitting receipt of the message. At this time an audi-

 

ble alert sounds and an "A" appears in the display. The "A"

 

will remain displayed (instead of the selected channel num-

 

ber) until the RESET button in pressed or the transmitter is

 

keyed.

 

Table 2 - Primary and Equivalent Digital Codes (OCTAL)

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Contents Maintenance Manual Table of Contents SpecificationsTables Radio Description Main Board AssemblyIntroduction MDS Radio Package NumbersLBI-38652 Power Amplifier Assembly FeaturesFront Panel Assembly PC ProgrammableEasy Accessibility Service AidsBattery Power Detailed Type 99 Operation ProgrammingMotorola Format GE Type 99 FormatIndividual Call Group Call Quick-Call FormatLBI-38652 Mechanical Parts Breakdown Parts List

LBI-38756 specifications

Ericsson LBI-38756 is a pivotal document that outlines the specifications and features of various Ericsson products and technologies tailored for telecommunications solutions. This publication is an essential resource for network operators and telecommunications professionals seeking to leverage Ericsson's advanced technology offerings.

One of the primary highlights of LBI-38756 is its comprehensive overview of software and hardware integration, emphasizing how Ericsson's solutions can enhance network performance and reliability. The document details numerous features, including enhanced mobility management, advanced radio access technologies, and intelligent network management systems. These innovations allow network operators to improve user experiences by providing faster and more resilient communication services.

In terms of technologies, LBI-38756 includes detailed descriptions of Ericsson's Radio System, which supports a wide range of frequency bands and configuration options. This adaptability ensures optimal performance in diverse environments, enabling operators to efficiently meet the growing demand for mobile bandwidth and data services. The Radio System is complemented by Ericsson's Cloud Core technology, which offers a robust infrastructure for managing data traffic and supporting various applications, from voice calls to IoT devices.

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Moreover, the document highlights Ericsson’s extensive portfolio of supporting software tools that enable network operators to optimize network planning and performance monitoring. These tools leverage advanced analytics and artificial intelligence to facilitate proactive decision-making, ensuring that networks are prepared to handle traffic fluctuations and future expansion.

In summary, the Ericsson LBI-38756 illustrates the company's dedication to delivering cutting-edge telecommunications technology. Its features encompass advanced radio systems, cloud capabilities, and sustainability initiatives, making it an invaluable resource for professionals aiming to adopt or enhance Ericsson's solutions in their telecommunications frameworks. As demand for reliable and efficient network services continues to grow, the insights offered in LBI-38756 will serve as a guiding framework for industry advancements.
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