EFJohnson 764X, 761X service manual Common Screen Description

Page 38

PROGRAMMING

Table 4-7 Common Screen Description

 

 

 

 

Parameter

Description

 

 

 

 

User

Programs the password that must be entered at power on if the following “PWR ON Password” parameter is

Password

“On” or to cancel the “STUN” condition described in Table 4-6.Any four-digit number from 0000-9999 can be

 

 

programmed. The password is entered as described in Section 3.3.2.

 

 

 

 

Program

Allows a comment to be programmed in the file for use in quickly identifying the contents of a transceiver.

Comment

When a transceiver is connected to the computer, the comment can be checked without reading all programmed

 

 

data by selecting “Information” in the Program menu (see Section 4.4.4).

 

 

 

 

AF Min

Sets the minimum audio level that can be selected by the user. The level can be set in 32 steps with 0 the lowest

Level

level. This setting can be overridden by pressing the F1 in the power-on menu (see Section 3.3.4).

 

 

 

 

SQL Level

Sets the squelch level in up to 255 steps (0 sets the maximum unsquelched level). This adjustment can be more

 

 

accurately made by pressing F4 in the power-on menu (see Section 3.3.4).

 

 

 

 

Rx AF

This parameter can be used to disable the high-pass filter that removes the Call Guard (CTCSS/DTCS) signal

Switch

from the audio. It should be programmed “On” if Call Guard squelch is used.

 

 

 

 

Auto Reset

These timer settings are used by the “Auto Reset” parameter in the channel screen (see Table 4-1). These times

Timer A/B

set the delay in returning to the mute mode or “Power On Scan” after receiving a message or pressing a key. To

 

 

disable the Auto Reset function, set one of these timers to “Off” (0) and select it in the channel screen.

 

 

 

 

Inactive

This feature is available with the PMR (European) mode only. It sets the time in seconds to return to the

Timer

“Inaudible” mode after the “Audible” mode is selected. To turn off the inactive timer function, do not assign

 

 

“Inactive” in the channel screen.

 

 

 

 

TOT

Programs the time-out timer time in seconds. If the transmitter is keyed continuously for longer than this time,

Timer

the transmitter is disabled. The time-out timer is enabled or disabled for each channel by the TOT parameter in

 

 

the channel screen (see Table 4-1).

 

 

 

 

TOT Penalty

This programs the time in seconds that the transmitter is disabled by the time-out timer. The transmitter cannot

Timer

be keyed again until this time expires.

 

 

 

 

TOT ID Out

If this parameter is enabled, an DTMF ID code is automatically transmitted just before the time-out timer

 

 

disables the transmitter. This ID code is set on the Log/ID line of the DTMF Autodial screen (see Table 4-3).

 

 

 

 

TOT Beep

If this parameter is enabled, warning beeps are transmitted 10 seconds before time out occurs.

 

 

 

 

Lockout

This is the time that the transmitter is disabled if the user attempts to transmit while in the lockout (Transmit

Penalty

Disable On Busy) condition. Transmitting is disabled for the Lockout Penalty Time even if the lockout condi-

Timer

tion is cleared. The lockout feature is programmed on the channel screen (see Table 4-1).

 

 

 

 

CTCSS

If CTCSS (tone Call Guard) signaling is programmed on the channel, this sets the length of the reverse burst

Reverse

that is transmitted when the PTT switch is released. The reverse burst prevents the “squelch tail” (noise burst) in

Burst

the transceiver receiving the signal.

 

 

 

 

 

November 1998

4-13

Part No. 001-7600-001

Image 38
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 Toll-Free 800 75xx AccessoriesAccessory Factory ReturnsReplacement Parts Internet HomeThis page intentionally left blank VHF and 7640 UHF Mobile Specifications GeneralGeneral Information Installation and Disassembly Transceiver InstallationPower Cable Installation Installing Mounting BracketInstalling Microphone Hanger Cable InstallationUsing AN External Speaker Power Cable FusesChanging 20-Ampere Power Cable Fuses Accessory Cable InstallationRemove shield E Transceiver DisassemblyRemoving PC Board Setting 5-Tone Deviation 2-TONE/5-TONE Module InstallationInstallation Procedure 2 2-TONE ProgrammingInstallation and Disassembly Features OperationBasic Operation Controls and DisplayTransceiver Back Panel Direct Selection The F1-F4 Receiving and Placing Calls Option Key Programmable Functions TIME-OUT TimerProgrammable Functions Function Key Label Description Section NoCall Guard Tone Select Monitor Mode SelectOutput Power Select Channel SelectChannel Scan Priority Channel Sampling Programming Cables Programming SetupSection Programming Programming SoftwareMenu Flow Starting the ProgramSpecial Keys and Functions File MenuPrint Menu Screen MenuProgram Menu Model MenuParameter Description Bank Select Setup MenuMemory Channel Screen Description LMR Models Frequency TimerCh Atr Rx/TxScan Auto ResetLockout ToneKey and Display Assign Screen Description Key DescriptionKey Description Label Selection RF PowerDtmf Autodial Screen Description Bank/FreeParameter Description Continuous Tone Screen DescriptionScan Function Screen Description Resume Stop Timer2-Tone Code Channel Screen Description Auto CHAuto Tx EXO TimerTimer Auto Tx StunCommon Screen Description Expert Screen Description Unique PMR European Screens Unique PMR ScreensCloning Programming ONE Transceiver with Another Memory Channel Screen PMR Models This page intentionally left blank VHF 7610 Circuit Description VHF Receiver CircuitAudio Amplifier Circuit Receiver Mute CircuitMicrophone Amplifier Circuit Power Amplifier ModuleVHF Transmitter Circuit Modulation CircuitPLL Circuit APC CircuitVHF PLL Circuit Pin Port Description VHF IC PIN DescriptionsLine Description VHF Port Expander IC11 Main Unit VHF I/O Expander IC5 Main UnitPin Pin Port Description NameUHF 7640 Circuit Description UHF Receiver CircuitSecond if System IC1 UHF UHF Transmitter Circuit PLL Circuit UHF UHF PLL CircuitUHF Power Supply UHF CPU IC1 Port AllocationUHF I/O Expander IC12 Main Unit UHF Port Expander IC13 Main UnitSuggested Test Equipment Adjustment ProcedureTest Setup Equipment Grade and RangeTest Channels Test CableUHF Test Frequencies COMPUTER-AIDED TuningVHF Test Frequencies Preliminary Setup VHF AdjustmentsVHF Adjustments PLL Adjustment VHF ModelsFM Deviation Adjust VHF Adjustments CONT’DOutput Power Adjust Bandpass Filter Adjust Dtcs Waveform AdjustReceiver Adjustments VHF Models Squelch AdjustBeep Tone Level Adjustment Beep Tone LevelTransmitter Adjustments UHF Models UHF AdjustmentsPLL Adjustment UHF Models UHF Adjustments CONT’D UHF Adjustment PointsUHF Adjustments CONT’D Receiver Adjustments UHF Models Parts List Æçìíýõ9+ôý0$,1ý81,7Íäç HUDPLFý&ìçíåý-%ýì+ýìíë.ð7ð$ 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 VHF 7610 Exploded View Front UnitUHF 7640 Exploded View Main Unit Schematic Diagrams and Component LayoutsVHF 7610 Block Diagram Front UnitVHF 7610 Transistor Basing Diagrams Foldout → VHF 7610 Main Board TOP View VHF 7610 Main Board Schematic VHF Main UnitUHF 7640 Block Diagram UHF 7640 Main Board Bottom View UHF 7640 Main Board TOP View J4 T o O p tion al Un itUHF 7640 Main Board Schematic VHF/UHF Front Unit Board TOP View VHF/UHF Front Unit Board Bottom ViewVHF/UHF Front Unit Schematic UHF 7640 Transistor Basing Diagrams