EFJohnson 761X, 764X Continuous Tone Screen Description, Scan Function Screen Description

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PROGRAMMING

Table 4-4 Continuous Tone Screen Description

 

 

 

 

Description

 

 

 

 

The continuous tones programmed in this screen are selected by pressing the C.Tone CH Ent function key (see

Table 4-2) and then pressing the up/down

 

 

 

keys. This allows the user to select the continuous tone being transmitted

 

 

and received on the current channel. To transmit or receive using the codes programmed for the channel in the channel screen

(see Table 4-1), select “TON--M” using the

 

 

 

keys.

 

Table 4-5 Scan Function Screen Description

Parameter

Description

This screen is used to configure each of the up to five scan lists that can be selected. Channels are assigned to a scan list in the Memory Channel screen described in Table 4-1and by the TAG key described in Table 4-2. Scanning is turned on and off and a specific scan mode is selected by the SCAN key also described in Table 4-2.Scanning may be enabled at power on (see following) and by placing the microphone on-hook (see “Hanger Action” in Table 4-2).

Scan Mode The following conditions are programmable:

Scan Off - Deactivates that scan list so that it cannot be selected.

M1 (Normal) - Selects normal (non-priority) scanning from the lowest to highest channel.

M2 (Prio A) - Selects scanning from the lowest to highest channel while checking the Priority A channel. If scanning is turned off while receiving a message in the scan mode, the transceiver switches to that channel.

M 3 (Prio A) - Same as Mode 2 except that if scanning is turned off while receiving a message, the Priority A channel is selected.

Text Programs the text that is displayed while scanning with that scan list selected. If “OFF” is programmed, the text is not displayed. Instead, the alpha tag (or channel number) programmed for each channel is displayed as the channel is scanned. The characters and other information described for “TEXT” in Table 4-1also applies to this text.

November 1998

 

Part No. 001-7600-001

4-10

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Contents 761x VHF 764x UHF Conventional Mobile Conventional FM TWO-WAY Radio Table of Contents Table of Contents CONT’D Schematic Diagrams and Component Layouts General Information Factory Returns 75xx AccessoriesAccessory Toll-Free 800Internet Home Replacement PartsThis page intentionally left blank General VHF and 7640 UHF Mobile SpecificationsGeneral Information Transceiver Installation Installation and DisassemblyCable Installation Installing Mounting BracketInstalling Microphone Hanger Power Cable InstallationAccessory Cable Installation Power Cable FusesChanging 20-Ampere Power Cable Fuses Using AN External SpeakerRemove shield E Transceiver DisassemblyRemoving PC Board 2 2-TONE Programming 2-TONE/5-TONE Module InstallationInstallation Procedure Setting 5-Tone DeviationInstallation and Disassembly Operation FeaturesBasic Operation Controls and DisplayTransceiver Back Panel Direct Selection The F1-F4 Receiving and Placing Calls Function Key Label Description Section No TIME-OUT TimerProgrammable Functions Option Key Programmable FunctionsChannel Select Monitor Mode SelectOutput Power Select Call Guard Tone SelectChannel Scan Priority Channel Sampling Programming Software Programming SetupSection Programming Programming CablesFile Menu Starting the ProgramSpecial Keys and Functions Menu FlowModel Menu Screen MenuProgram Menu Print MenuParameter Description Bank Select Setup MenuMemory Channel Screen Description LMR Models Rx/Tx TimerCh Atr FrequencyTone Auto ResetLockout ScanKey Description Key and Display Assign Screen DescriptionKey Description Label Bank/Free RF PowerDtmf Autodial Screen Description SelectionParameter Description Continuous Tone Screen DescriptionScan Function Screen Description Auto CH Stop Timer2-Tone Code Channel Screen Description ResumeStun EXO TimerTimer Auto Tx Auto TxCommon Screen Description Expert Screen Description Unique PMR Screens Unique PMR European ScreensCloning Programming ONE Transceiver with Another Memory Channel Screen PMR Models This page intentionally left blank VHF Receiver Circuit VHF 7610 Circuit DescriptionReceiver Mute Circuit Audio Amplifier CircuitModulation Circuit Power Amplifier ModuleVHF Transmitter Circuit Microphone Amplifier CircuitPLL Circuit APC CircuitVHF PLL Circuit Pin Port Description VHF IC PIN DescriptionsLine Description Pin Port Description Name VHF I/O Expander IC5 Main UnitPin VHF Port Expander IC11 Main UnitUHF Receiver Circuit UHF 7640 Circuit DescriptionSecond if System IC1 UHF UHF Transmitter Circuit UHF PLL Circuit PLL Circuit UHFUHF CPU IC1 Port Allocation UHF Power SupplyUHF Port Expander IC13 Main Unit UHF I/O Expander IC12 Main UnitEquipment Grade and Range Adjustment ProcedureTest Setup Suggested Test EquipmentTest Cable Test ChannelsUHF Test Frequencies COMPUTER-AIDED TuningVHF Test Frequencies PLL Adjustment VHF Models VHF AdjustmentsVHF Adjustments Preliminary SetupFM Deviation Adjust VHF Adjustments CONT’DOutput Power Adjust Squelch Adjust Dtcs Waveform AdjustReceiver Adjustments VHF Models Bandpass Filter AdjustBeep Tone Level Beep Tone Level AdjustmentTransmitter Adjustments UHF Models UHF AdjustmentsPLL Adjustment UHF Models UHF Adjustment Points UHF Adjustments CONT’DUHF Adjustments CONT’D Receiver Adjustments UHF Models Æçìíýõ9+ôý0$,1ý81,7 Parts ListÍäç HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íäæ Ìää HUDPLFý&ìçíåý-%ýì&ýìíé.7ð1 Íëëðêäíçðçìé Ëíí Ëäí HUDPLFý&ìçíåý-%ýìýìíê.ð7ð$ Íëëðêäíçðíçê Ëäì RLOý0/ìçíå$ýì5í.ð7 Íëëðêäíçðçèç 03ì Ýìäëëý9&2ýFDVH 5íéé 5HVý5-ê*-ýìííý9ýõìíýRKPô Íëëðêäíçðìêå 5íéè 5ìèé 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô Æçéíýõ8+ôý0$,1ý81,7 Íêì HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ Íëëðêäíçðíçí Íêë Íäé HUDPLFý+0çí6-ý&+ýíêíýèíí9ý Õéäíðèìëý0+ô Ìèì 5HIý1Rï Êëç Íëëðêäíçðäèë 4éì 7UDQVLVWRUý7&êçê.ý7ìéæ 5íæé 5ìçå 5HVý5-ê*-ýìíéý9ýõìííýNýRKPô 5217ý81,7 Õ9+ý$1ý8+ý02/6ô =HQHUý0$åíèìð0ýõ7ô Æçìíýõ9+ôý&+$66,6ý3$576 Front Unit VHF 7610 Exploded ViewUHF 7640 Exploded View Front Unit Schematic Diagrams and Component LayoutsVHF 7610 Block Diagram Main UnitVHF 7610 Transistor Basing Diagrams Foldout → VHF 7610 Main Board TOP View VHF Main Unit VHF 7610 Main Board SchematicUHF 7640 Block Diagram UHF 7640 Main Board Bottom View J4 T o O p tion al Un it UHF 7640 Main Board TOP ViewUHF 7640 Main Board Schematic VHF/UHF Front Unit Board Bottom View VHF/UHF Front Unit Board TOP ViewVHF/UHF Front Unit Schematic UHF 7640 Transistor Basing Diagrams