EFJohnson 7780 Battery Pack and Charger Information, Power Setting Operating Time, Rapid Charger

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BATTERY PACK AND CHARGER INFORMATION

SECTION 5 BATTERY PACK AND CHARGER INFORMATION

5.1 BATTERY PACK

CAUTION

Dispose of these batteries in accordance with local reg- ulations. Do not dispose in a land fill. Do not incinerate because an explosion may result.

5.1.1 GENERAL

Standard 1400 mAH Battery Pack, Part Number 587-8150-135, contains six size AA nickel metal- hydride (Ni-MH) batteries connected in series. Also inside the pack are a diode, thermistor, and thermal circuit breaker. The diode protects against reverse polarity when charging and also prevents discharge of the battery through the charger. The thermistor is used by the rapid charger to sense battery temperature.

Intrinsically Safe 1400 mAH Battery Pack, Part Number 587-8150-136, is similar to the standard pack except that it has a thermal fuse and series resistors connected to the negative terminal of the battery. This resistor limits current if a short circuit occurs.

The battery pack is a sealed unit that is not intended to be serviced. If the pack fails to hold a charge or is defective for some other reason, it must be replaced with a new unit. The batteries in this pack have a nominal capacity of 1400 mAH. Typical oper- ating time before recharge is as follows. This assumes that the transceiver is in the standby mode (receive, audio squelched) 90% of the time, the receive mode (receive, rated audio out) 5% of the time, and the transmit mode 5% of the time.

Power Setting

Operating Time

 

 

1 watt

8.6 hours

3 watts

7.5 hours

 

 

5.1.2 BATTERY CARE

•Repeated deep discharge. Recharging should take place soon after the low battery indication appears. This indication appears when the battery pack voltage drops to 6.3 volts which is approximately

1 volt per cell. Do not regularly continue operating the transceiver until it is completely nonfunctional.

•Regularly recharging a battery after only light use. This may result in shortened operating time. If this has caused shortened operating time, it may be possible to restore it to normal by performing three complete discharge/charge cycles.

•Frequent use at temperature extremes. Maximum battery life is achieved if the ambient temperature when using or recharging a battery is 68-86° F (20- 30° C). The recommended temperature ranges for the various battery functions are as follows.

Function

Fahrenheit

Celsius

 

 

 

Charging

+50 to +104°

+10 to +40°

Actual Use

+14 to +140°

–10 to +60°

Storage

–22 to +122°

–30 to +50°

 

 

 

•Regularly leaving fully charged battery packs in the charger for extended periods (such as longer than over a weekend).

•A short circuit condition that causes overheating that could vent hydrogen and reduce life.

5.2 RAPID CHARGER

The single-unit rapid charger that is used to charge this battery pack is listed in Table 1-1. Also required is either the 117 or 220 VAC power supply. The pack can be charged while attached to the trans- ceiver; however, charge time may be slightly longer. Typical charge time is as follows. This assumes that the battery is discharged to the point where the low battery indication appears.

Typical Battery Charge Time = 1 hour

With proper care, a battery pack should provide many months of service. Some causes of shortened battery life are as follows:

This charger uses state-of-the-art ΔT/Δt (change in temperature/change in time) and – ΔV (negative

 

November 1999

5-1

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 800Replacement Parts Internet Home Intrinsically Safe InformationDefinitions 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 SpecificationsFeatures Transceiver OperationControls and Display Low-Battery Indicator Amber TX Indicator Red Indicates when the transmitter is keyedDisplay Front Panel Keys Full Keypad ModelDisplay Backlight Turning Power on and Setting VolumeOption Switches General OperationOption Switch Functions Function ConvSee Scanning Tone ENABLE/DISABLEConventional and SMARTNET/ Smartzone Operation Conventional Features Display Mode SelectionMonitoring Before Transmitting Monitor Mode Busy Channel LockoutCall 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 Emergency Alarm and Call MessagingSending Status Conditions Failsoft Operation SMARTNET/SMARTZONE ScanningDynamic Regrouping Supervisory Tones Keypad Programming Menu DescriptionZone Change Parameter Channel Change Parameter System ParametersChannel 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 EditingScan Timers Setting UP Conventional ChannelsPriority 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 ScreenSMARTNET/SMARTZONE System Lists Screens Trunking Phone List ScreenMessage Aliasing Screen Control Channels Screen Announcement Groups ScreenTrunking Call List Screen Setting UP SMARTNET/SMART- Zone Channels Status Aliasing ScreenSMARTNET/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 DescriptionVCO and Tcxo Modulation Synthesizer Chip IC1Charge Pump Q1, Q2, Loop Filter Receiver Circuit Description RF Amplifier Q1, First Mixer Q2If 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 Audio Amplifier IC104-IC106 Receive and Transmit Data ProcessingReceive 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 AssemblyIf Assembly KEY 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 Schematic Diagrams and Component Layouts PLL Board TOP ViewPLL 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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