EFJohnson 761X, 764X service manual Expert Screen Description

Page 39

PROGRAMMING

 

Table 4-7 Common Screen Description (Continued)

 

 

Parameter

Description

 

 

Power On

This turns the password function on and off. When it is turned on, “PWoRd” is displayed when power is turned

Password

on and a four-digit password must be entered to enable the transceiver (see Section 3.3.2). The password is pro-

 

grammed in “User Password” above. If the STUN function disables the transceiver (see Table 4-6),password

 

input is required even if this parameter is programmed “Off”.

 

 

Dealer

Specifies the six-digit code that must be entered to access the following dealer set mode.

Passcode

 

 

 

Set Mode

This enables/disables the Dealer Set Mode which allows one transceiver to clone another with identical infor-

Access

mation. If the transceiver will not be used for cloning, the dealer set mode is not used and this parameter should

 

be programmed “Inhibit”.

 

 

Transceiver

Enables or inhibits the downloading of transceiver programming data using the programming software or when

Data Out

programming one transceiver with another (cloning). This prevents the unauthorized duplication of program-

 

ming data. This does not inhibit overwriting of programming data, so reprogramming is still possible with this

 

enabled.

 

 

Table 4-8 Expert Screen Description

 

 

Parameter

Description

 

 

Fast Scan

Sets the period in seconds that each channel not programmed for CTCSS/DTCS (Call Guard) squelch is

Timer

scanned. NOTE: An appropriate time is set by default and if a time less than the default is programmed, busy

 

channels may not be detected.

 

 

Slow Scan

Sets the period in seconds that each channel programmed for CTCSS/DTCS (Call Guard) squelch is scanned.

Timer

NOTE: An appropriate time is set by default and if a time less than the default is programmed, busy channels

 

may not be detected.

 

 

Tx DTCS

Selecting “Inverse” selects the opposite transmit digital DTCS (Call Guard) code polarity specified for the

Inverse

channel (see Table 4-1)and selecting “Normal” does not change that setting. For example, if the channel is pro-

 

grammed “I” (inverse), selecting “Inverse” here results in “Normal” DTCS. For DTCS signaling to work prop-

 

erly, the polarity of the code in the transmitting and receiving transceivers must be the same.

 

 

Rx DTCS

Functions the same as the preceding “Tx DTCS Inverse” parameter to change the receive DTCS polarity.

Inverse

 

 

 

User CTCSS

A non-standard CTCSS (Call Guard) tone from 60.1-300.1 Hz can be programmed. It is then selected by pro-

Freq.

gramming “USER” for the CTCSS code in the channel screen (see Table 4-1).

 

 

November 1998

 

Part No. 001-7600-001

4-14

Page 38 Page 40
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Page 38 Page 40
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 SpeakerTransceiver Disassembly Removing PC BoardRemove shield E 2 2-TONE Programming 2-TONE/5-TONE Module InstallationInstallation Procedure Setting 5-Tone DeviationInstallation and Disassembly Operation FeaturesControls and Display Transceiver Back PanelBasic Operation 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 MenuSetup Menu Memory Channel Screen Description LMR ModelsParameter Description Bank Select Rx/Tx TimerCh Atr FrequencyTone Auto ResetLockout ScanKey Description Key and Display Assign Screen DescriptionKey Description Label Bank/Free RF PowerDtmf Autodial Screen Description SelectionContinuous Tone Screen Description Scan Function Screen DescriptionParameter 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 CircuitAPC Circuit VHF PLL CircuitPLL Circuit VHF IC PIN Descriptions Line DescriptionPin Port 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 ChannelsCOMPUTER-AIDED Tuning VHF Test FrequenciesUHF Test Frequencies PLL Adjustment VHF Models VHF AdjustmentsVHF Adjustments Preliminary SetupVHF Adjustments CONT’D Output Power AdjustFM Deviation Adjust Squelch Adjust Dtcs Waveform AdjustReceiver Adjustments VHF Models Bandpass Filter AdjustBeep Tone Level Beep Tone Level AdjustmentUHF Adjustments PLL Adjustment UHF ModelsTransmitter Adjustments 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
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