EFJohnson 8500 manual Group Scan, Time-Out Timer

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OTHER FEATURES

cates that the radio system has been successfully accessed and speaking can begin. If no tone sounds and “BUSY” is indicated in the display, the system is busy. If you continue to hold down the push-to-talk switch, the system will be accessed and the clear-to-talk tone will sound when the system is available. If the selected system is programmed for conven- tional operation, the clear-to-talk tone does not sound. Therefore, you can begin speaking as soon as the push-to-talk switch is pressed (after moni- toring the channel). A standard or loud clear-to-talk tone can be selected. To change the tone, turn power on with the “S” key pressed.

Group Scan

With the Group Scan feature, calls are received on all the selectable groups of a Multi-Net system regardless of which is selected. The display also changes to the group on which a call is received. Without Group Scan, calls are received on only the selected group. Group Scan is enabled or disabled by your system operator on each Multi-Net system. If programmed, it is active whenever the system is selected or scanned (system scan does not need to be on). Group Scan is not available on conventional systems, and it is disabled when the phone mode is selected.

When system scan is turned off, group scan is indicated by a dash in the Group display (the System display continues to indicate the selected system). When system scan is occurring, dashes appear in both the System and Group displays even if group scan is not programmed. Groups can be locked out of scanning using the LCK key (refer to “System and Group Lockout” on page 23).

Time-Out Timer

There is a Time-Out Timer feature which automatically disables the transmitter if it is continuously on for longer than the programmed time. If this timer times out, the transmitter is disabled, the intercept tone sounds, and “TX TIME” is displayed. It is programmed by your system operator for a time from 0.5-5.0 minutes. The timer and tone are reset by releasing the push-to-talk switch. This timer prevents a blocked channel caused by an accidentally keyed transmitter and also possible transmitter damage caused by transmitting for extended periods.

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Contents Series Safety Information Battery Recycling Information Page Quick Reference Guide Page Table of Contents Operation with Optional Remote Control Unit Front Panel Controls ControlsControls Optional Keys for Telephone Calls Front Panel Display Display InformationDisplay Information Introduction Standard CallsPlacing a Standard Call Receiving a Standard CallPlacing a Special Call Special CallsReceiving a Special Call Landside-Originated Calls Additional Phone Mode InformationDialing The Number Intercept Tone Supervisory TonesKey Press Tone Clear-To-Talk ToneConfirmation Tone Call Proceed Tone System ScanEnd Call Tone Proceed Dialing ToneTransmitting In Scan Scan Resume DelaySystem and Group Lockout Scanning Multi-Net Systems Other FeaturesScanning Conventional Systems Clear-To-TalkGroup Scan Time-Out TimerRTN Return Key Call IndicatorEmergency Button Transmit Inhibit Keypad DisablePriority Calls High/Low Power Select Key Press Tone DisableChannel Monitoring MULTI-NET and Conventional ModesSupervisory Tones Group SelectTransmit Disable When Busy Conventional Mode OperationMonitoring Before Transmitting Call Guard Squelch Receive-Only and Talk-Around ChannelsOperation with Optional Remote Control Unit Control Unit Controls Miscellaneous Operating Information Operation with Optional Remote Control Unit Sending Status Information Miscellaneous InformationAuto-Registration System Operator Programming Busy QueuingDisplay Messages Setting Volume LevelBattery Pack Rechargeable Battery PackTransceiver Operation At Extended Range Speaking Into MicrophoneFCC Licensing Intrinsically Safe Classification Transceiver ServiceClassification of Atmospheres Class/ Group Classification of Areas DivisionApproved