EFJohnson 7780 service manual Call Alert

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TRANSCEIVER OPERATION

•If an out-of-range condition exists or the radio system is not in service, “LOST CALL” is displayed and a continuous tone sounds. End the call by pressing the CLR key.

•If you are not authorized to make telephone calls, “REJECT” is displayed and a continuous tone sounds. End the call by pressing the CLR key.

•If the radio system is busy, “BUSY” is displayed and a busy tone sounds. The call automatically proceeds when the radio system becomes avail- able. If the call is ended before it proceeds, your position in queue is lost.

Answering a Telephone Call

Telephone calls are automatically received if a SMARTNET/SmartZone channel is selected. Proceed as follows:

1.When a telephone call is received, “ringing” similar to a standard telephone is heard. The display alter- nately indicates “PHONE” and the current channel alias.

2.To answer the call, press the Phone option switch

and the phone mode is indicated by the icon. Press the PTT switch to talk and release it to listen.

3.To end the call when the conversation is complete or at any other time, press the CLR key. Also press the CLR key to ignore an incoming call and end it without answering. NOTE: If the CLR key is programmed for the Phone function, it will not clear the call.

2.5.7 CALL ALERT

The Call Alert™ feature allows pages to be sent and received. Proceed as follows:

Sending a Page

Pages can be placed by selecting the unit ID from a preprogrammed list (list entry) or by directly entering it using the keypad (direct entry). Direct entry is available with full keypad (15-key) models only.

List Entry Method (All Models)

1.With a SMARTNET/SmartZone channel selected, momentarily press the Call Alert option switch. The tag (alias) of the last ID called is displayed if it matches an ID in your call list. Otherwise, the last ID called is displayed.

2.Enter the index of the desired ID if you know it or

scroll through the list using the and keys until you find the desired ID. Press the CLR key to

cancel the call.

3.Press the PTT switch or the ENT key to send the page. The display then indicates the alias of the radio being paged. Proceed to the bulleted list which follows the next method for conditions that may then occur.

Direct Entry Method (Full Keypad Models Only)

1.With a SMARTNET/SmartZone channel selected, press and hold the Call Alert option switch until a tone sounds (approximately 1 second). The last ID called or paged is displayed.

2.Using the 0-9keys, enter the 6-digit ID of the unit

you are calling. Press the key to erase the last digit entered or press the CLR key to cancel the page.

3.Press the PTT switch or the ENT key to send the page. If the entered ID is invalid, “INVALID” is momentarily displayed and the page is not sent. If the entered ID is valid, the display indicates the alias of the ID if it matches an ID in your call list. Other- wise, the ID you entered continues to be displayed. The page is then sent and any of the following conditions may then occur.

•If the radio you are paging is on the air and received your page, a signaling success tone (six beeps) sounds and the display momentarily indicates “ACK RCVD”. The alias of the selected channel is then displayed continuously.

•If the radio you are paging is not in service, a tone sounds and “NO ACK” is displayed. Press the CLR key to cancel the page.

 

November 1999

2-17

Part No. 001-7780-500

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Contents 7780 Page Page Table of Contents Table of Contents CONT’D List of Figures List of TablesScope of Manual Equipment Description General InformationTransceiver Identification AccessoriesFactory Customer Service Part Number BreakdownFactory Returns AccessoriesAccessory Toll-Free 800Internet Home Intrinsically Safe Information Replacement PartsDefinitions Classification of Hazardous Areas and Atmospheres Temperature Code T3CPossible Ignition Sources Intrinsically Safe and Nonincendive RatingsArea Classification Accessing PC BoardsMaterial Classification Typical Hazard Group ClassRemoving Logic Unit Removing RF UnitGeneral SpecificationsTransceiver Operation FeaturesControls and Display Low-Battery Indicator Amber TX Indicator Red Indicates when the transmitter is keyedFront Panel Keys Full Keypad Model DisplayDisplay Backlight Turning Power on and Setting VolumeOption Switches General OperationFunction Conv Option Switch FunctionsSee Scanning Tone ENABLE/DISABLEConventional and SMARTNET/ Smartzone Operation Display Mode Selection Conventional FeaturesMonitoring Before Transmitting Busy Channel Lockout Monitor ModeCall Guard Squelch Conventional Mode Scanning Penalty TimerConversation Timer Power Output SelectPriority Channel Sampling Standard Conventional Calls DTMF/ANI SignalingEnhanced Private Conversation Calls SMARTNET/SMARTZONE FeaturesViewing Unit ID Standard Group CallsTransceiver Operation Private Conversation II Calls Telephone Calls Call Alert Messaging Emergency Alarm and CallSending Status Conditions SMARTNET/SMARTZONE Scanning Failsoft OperationDynamic Regrouping Supervisory Tones Menu Description Keypad ProgrammingZone Change Parameter System Parameters Channel Change ParameterChannel Parameters Computer Description Programming SetupPctrunk Software Installation Transceiver ProgrammingHelp Files Connecting RPI to Computer and TransceiverStarting and Exiting Programming File TypesCreating and Displaying Systems Screen Pop-Up Buttons and File Size IndicatorProgramming Procedure File Size IndicationMenu Bar Menu CommandsWindow Menu Radio Type MenuDownload Menu Upload Menu Systems MenuZones DefaultsRADIO-WIDE Parameter Screens BandAssign Function Buttons Radio Wide Scan ListRadio-Wide Scan List Screen Modify List ScreenHot Dtmf RADIO-WIDE Conventional ScreenRADIO-WIDE SMARTNET/SMARTZONE Screen Full Spectrum CC ScanConventional System General Screen Adjustable ParametersRADIO-WIDE Portable Options Screen Programming Conventional Systems and ChannelsScan List Button TimersConventional System Modify Scan List Screen Keypad EditingSetting UP Conventional Channels Scan TimersPriority Channel Selection Selected Channel Conventional Channel Screen ParametersTx Time-Out Transmit PowerSignaling Channel TypeSplinter Channels Restricted AccessTime-Out Timer ISW Delay TimePrivate Call SMARTNET/SMARTZONE System Other ID’S ScreenSMARTNET/SMARTZONE System Phone Interconnect Screen Phone InterconnectFailsoft Channel SMARTNET/SMARTZONE System Emergency Settings ScreenEmergency Alarm SMARTNET/SMARTZONE System Talk Groups ScreenTrunking Phone List Screen SMARTNET/SMARTZONE System Lists ScreensMessage Aliasing Screen Control Channels Screen Announcement Groups ScreenTrunking Call List Screen Status Aliasing Screen Setting UP SMARTNET/SMART- Zone ChannelsSMARTNET/SMARTZONE Channel Screen Parameters Other Screen Parameters SMARTNET/SmartZone Channel ScreenRecommended Tone Call Guard Codes Freq Call Guard CTCSS/DCS Codes and TonesMHz Channels MHz Channels MHz Channels MHz Channels MHz Channels MHz Channels Synthesizer Description Power Switching and RegulationPower Switching Circuit DescriptionSynthesizer Chip IC1 VCO and Tcxo ModulationCharge Pump Q1, Q2, Loop Filter RF Amplifier Q1, First Mixer Q2 Receiver Circuit DescriptionIf Amplifier Q2, LIMITER/DETECTOR IC3 Amplifier Q9, Driver Q8 Antenna Switch and LOW-PASS FilterSquelch Circuit IC4A/B, IC5A Transmitter DescriptionReceive Audio Processing Control Logic and DisplayPin Port Name Input or Description Active High Output Microprocessor IC306 Pin DescriptionsHvfulswlrq Receive and Transmit Data Processing Audio Amplifier IC104-IC106Receive Data FILTER/DETECTOR IC102A/B, IC107A/B Transmit Audio Processing Transmit Data Filter IC206B/ IC206ASmartnet Data Processing LOW-PASS Filter IC205A/BFunction Fahrenheit Celsius Battery Pack and Charger InformationBattery Pack Power Setting Operating TimeBattery Pack and Charger Information Test Setup Alignment Procedure and Performance TestsMm/3/32 Mm/1/8 Phone Jack Tune Software HqhudoMain Pctune Screen Preliminary SetupModulation Balance Transmit Frequency and PowerTransmit Power Adjustment Screen High Power Level = 3.0 watts Low Power Level = 1.0 wattData Deviation Squelch AdjustRssi Adjust Audio DeviationReceiver Performance Tests Performance TestsTransmit Modulation Power OutputTransmitter Performance Tests Transmit FrequencyThis page intentionally left blank Ref No Description Parts ListDisplay Assembly Chassis PartsDisplay Assembly KEY AssemblyKEY Assembly If AssemblyIf Assembly RF Unit PLL AssemblyRF Unit NJM2904V-TE1 IC RF Unit Logic Unit Logic Unit TDA7233D IC Logic Unit 200K ERJ3GE MP35 MP18 MP25 EP2 KEY Front PanelEP1 MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18 PLL Board TOP View Schematic Diagrams and Component LayoutsPLL Board Bottom View If Board Bottom View If Board TOP ViewRF Unit Transceiver Block DiagramMIC RF Board TOP ViewIf AMP RF Board SchematicHD1 Logic Board TOP ViewReceive Audio Processing Logic Board SchematicGND KEYR3 KEYR2 KEYR1 KEYR0 KEYS3 KEYS2 KEYS1 KEYS0 GND Display Board Bottom ViewDS3 DS4 DS5 Display Board SchematicKEY Board Back View KEY Board Front ViewS S R R R R KEY Board SchematicScan HC2 HC7 HC8 HC3 Schematic Diagrams and Component Layouts
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