Section 1 Section 1 1.1 3800 Information General Description The EF Johnson Technologies 3800 Series Digital Repeaters are designed specifically for radio trunking operations. The 3800 integrates the functions of radio repeater and trunking channel controller into one unit. See Figure 1.1. Figure 1.
3800 Information The radio component provides a transmitter and receiver with software programmable frequency and power selection. Transmitter and receiver signals are encoded and sampled by dual Digital Signal Processors DSP). Channel controllers in each repeater manage the control and traffic channels for frequency assignments and transmitter power level. The local site controller is integrated into one of the repeaters.
800 Information 1.2 Functional Description The EF Johnson Technologies 3800 Series Digital Repeater is a trunked repeater with built-in trunking control. The Trunked IP25 System Channel Controller function is integrated into the repeater subsystem. The 3800 Repeater uses frequency synthesizer and Digital Signal Processor (DSP) technologies to provide digital control of the radio channels.
3800 Information channel failures or processing errors to the Site Controller. One Channel Controller is used for each radio repeater subsystem (in multiple repeater systems). TXDSP Module The TXDSP module manages the repeater radio transmitter interface. This module provides channel encoding with forward error detection and correction coding. It receives data packets from the channel controller and creates a signal for the transmitter.
3800 Information Power Supply The power supply accepts the AC line power input and converts it into the various DC power requirements of the repeater. 1.3 System Configuration The 3800 Repeater is typically used as the repeater component in an EF Johnson Technologies Trunked IP25TM System. This is an Internet Protocol (IP) Local Area Network (LAN) based radio system.
3800 Information Figure 1.
3800 Information 1.4 Safety Information This repeater emits radio frequency (RF) energy when transmitting. Make sure to observe all RF energy exposure standards when installing, testing, repairing, and operating this radio equipment. The FCC has adopted a safety standard for human exposure to RF energy. Proper operation of this repeater under normal conditions results in user exposure to RF energy below the Occupational Safety and Health Act and Federal Communication Commission limits.
3800 Information - EF Johnson Technologies 3800 Digital Repeater Service Manual - EFJohnson Trunked IP25 System Installation & Configuration Manual - EFJohnson Trunked IP25 System Administration & Maintenance Manual 1 -8 3800 Digital Repeater Operating Manual October 2009
Section 2 Section 2 Controls & Indicators Most controls and indicators on the 3800 are located behind the front panel. Figure 2.1 shows the 3800 with its front panel removed. 3800 controls and indicators are located on the Site Controller card, Channel Controller card, and the External Interface card. These are described and illustrated in greater detail in the following sections. Figure 2.
2.1 Controls & Indicators Site Controller Card The site controller card provides the high-level call processing for the entire site. Unless using backup site controllers, only one repeater in each system contains a site controller card. The Site Controller card’s controls and indicators are illustrated in Figure 2.2 and described following. Figure 2.2 Site Controller Controls and Indicators Site Controller Controls and Indicators Auxiliary Status LED Software Version < 3.0 Software Version > or = 3.
Controls & Indicators Ethernet Link Status This indicates the main Ethernet link data rate. If this LED is on, the rate is 100 Mbps. If this LED is off, the rate is 10 Mbps. Reset Switch 2.2 Pressing this switch resets the controller card. Channel Controller Card The channel controller card controls either a single traffic channel or a single control channel for a particular 3800 repeater system. The Channel Controller card’s controls and indicators are illustrated in Figure 2.3 and described following.
Controls & Indicators Channel Controller Controls and Indicators Ethernet Link Data Rate LED This indicates the main Ethernet link data rate. If this LED is on, the rate is 100 Mbps. If this LED is off, the rate is 10 Mbps. Ethernet Status LED If on, the repeater is connected to Ethernet. Reset Switch Pressing this switch resets the channel controller card. Note Both of the Channel Controller card LEDs should be ON continuously after you initialize the repeater. (Two LEDs are not used in the field.
Controls & Indicators 2.3 External Interface Card (EIC) The External Interface Card (EIC) contains most of the switches and LEDs that you use to monitor and control the repeater. The EIC controls only the channel controller card. These controls and indicators are illustrated in Figure 2.4 and described as follows. Note LED indications discussed here apply only during normal operation (i.e.
Controls & Indicators EIC Controls and Indicators RX DSP Data LED When ON, receiving decodable data. • Control channel – RX synthesizer is locked, receiving decodable user registrations, affiliations or call requests • Traffic channel – RX synthesizer is locked, receiving user voice traffic. This LED flickers as users key and dekey, enter and exit fades, etc. TX DSP Data LED When ON, transmitter is active. • Control channel – TX synthesizer is locked, PA is keyed up, no RF deck alarms.
Controls & Indicators System Reset Switch This is the reset switch for both the channel controller and the site controller (if one is installed). Pressing this switch resets the control logic and restarts the operating program(s) from the beginning. Menu Control Switch Pressing or rotating this control enables the menu mode. When the menu mode is selected, pressing and rotating this control scrolls through and selects the various menus and parameters.
Section 3 Section 3 3.1 Operation Operational Interface The External Interface Card (EIC) module provides the primary manual interface to setup and operate the 3800 Repeater. Using the two-line display, the EIC provides a menu structure of functions and settings for operating the repeater. (See Figure 3.1.) Figure 3.
Operation 3.2 EIC Menu Modes The main menu mode can be selected to display various repeater parameters. Figure 3.2 is a block diagram of the menu mode structure. The menu mode is selected and controlled by the Menu Control knob as follows. • To select the menu mode, press or rotate the Menu Control knob. The first main menu “CPU” is then displayed. • In general, rotating the Menu Control scrolls through available parameters, and pressing it selects the displayed parameter.
Figure 3.2 Note October 2009 Operation Main Menu Mode Block Diagram The repeater also has a diagnostic menu mode. Refer to Section 4 of this manual for a description of this mode.
Operation 3.2.1 CPU Menu This menu displays CPU information. - Load - Current system load. - Uptime - Length of time in seconds that the CPU has been running. 3.2.2 IP Menu This menu displays the Internet protocol (IP) address associated with the repeater. - NIC1 - The first network interface card. Some repeaters may have more than one network interface card. 3.2.3 MAC This menu displays the MAC information for the repeater. - NIC1 - The first network interface card.
3.2.6 Operation Load List Menu This menu displays the list of items in current load list. - load.lst - Shows the last digits of the MD5 hash for the /ffs/etc/load.lst file. Each line in this file becomes a menu item. Each menu item then has the associated binary’s MD5 hash, assuming the binary is actually present. Note 3.2.7 Shows the cumulative MD5 hash for all binaries listed in the load.list. Utility Menu This menu provides access to various utility functions for the system.
Section1 Troubleshooting & Diagnostics The 3800 repeater includes a diagnostic and troubleshooting mode. Running diagnostics is an alternate startup operational mode and is not available while the system is already running. During boot up, the normal boot up sequence can be aborted and an alternate boot personality may be selected. One alternate boot personality is the Diagnostic Personality. .
Repeater does not power up • • Verify the repeater has supplied AC power Check that the Power On/Off toggle switch on the EIC card module is set to the On position. When set to On, the EIC Power LED should be blinking. If not, replace the power supply module. Repeater indicates powered on, but • Reset the repeater by momentarily pressing the System Reset pushbutton on the EIC does not operate card module.
2 If any of the following TX faults are detected, replace the RF deck. - 2 Repeater not receiving TX Synth Lock –Transmit synthesizer out of lock. TX Temperature –PA temperature has exceeded limits. TX Fwd Power –Forward power is below limits when keyed. TX NoFwdPower –Forward power is above limits when not keyed. TX Power1 –Output of exciter is below limits. TX Power2 –Output of exciter is below limits. TX Power3 –Output of exciter is below limits. TX Power4 –Output of exciter is below limits.
LAN • Make sure that the site LAN is operating • Check the LAN connections to the repeater • SIte Controller not communicating • over LAN • • • Reboot the Channel Controller card and observe the LED indicators on this card. The green LEDs should remain on, indicating that a network connection is present. If not, replace the Channel Controller card.
2) Rx LED -when illuminated, indicates receive activity. Only applicable during RX Tests. 3) Tx LED -when illuminated, indicates the transmitter is in a keyed state. 4) Software Operational LED -when illuminated, indicates the software is operating properly. 5) Unassigned LED -This LED does not have a functional indication. 6) Fault LED -when illuminated, a fault has been detected. See Monitors/Faults.
.0.1 Monitors/Faults A monitor is a comparison of a sensor measurement to a predetermined limit or range. Monitoring of sensors is an ongoing process while running the diagnostics application. When a sensor measurement is out of range, a fault is generated. Detected faults result in the illumination of the red LED, and a corresponding message, which is viewable under the Faults menu. Monitor tests are selectable via the menu items TX Monitors, RX Monitors, or PSMonitors.
>> TX Config -Configure the Tx Test. Note that configuration changes will not take effect until the next time the Tx Test is started. -- TX Waveform -Select the waveform used during the TX Test; refer to ANSI/TIA-102.
• Hi Dev Amp Hz -Configure the amplitude for the “Analog High Dev” waveform. • [TOP] • [BACK] -- Test Duration -Set the Tx Test duration. • Timed (sec) -Set the Tx Test duration in seconds. Only applicable when Tx Test is started as “Timed” • Cycled - Set the Tx Test duration in number of Tx cycles, where a Tx cycle includes a duration of time where the transmitter is keyed, followed by a duration of time where the transmitter is dekeyed.
-- TX VSWR - Voltage Standing Wave Ratio. This is the ratio of the forward power sensor to the reflected power sensor given that both measurements exceed the minimum measurement. The minimum measurement is defaulted to 0.9 volts. If either of the sensors is below the minimum measurement, the resulting sensor measurement will be 2.001. -- TX Fan Op - Fan Operating sensor in volts. -- TX Fan1 Cur - Fan Current sensor 1 in volts. -- TX Fan2 Cur - Fan current sensor 2 in volts.
>> PS Monitor - Shows the result of a power supply monitor. See Monitors/Faults for more detail. -- PS Temp [START/STOP]- Power supply temperature in degrees C. -- PS Batt Warn - The measurement is TRUE when backup battery level is sufficient for operation, FALSE when belw the warning level. It is also TRUE if the backup battery option is not installed. -- PS Batt Fail - The measurement is TRUE when backup battery level is at or above the failed threshold, FALSE when below the failed level.
-- HS RX Syn Lock - High Stability RX Synthesizer Lock -- RX Syn Lock - Rx Synthesizer Lock -- 5 Volt - Connected to 5 volt supply through R divider. -- Fan2 Cur - Fan current sensor 2. -- Fan1 Cur - Fan current sensor 1. -- 26.5 Volt - Connected to 26.5 volt supply through R divider. -- Fan1 Op - Fan Operational sensor. -- Fwd Power - TX Forward Power sensor -- Power 1 - Power 1 sensor. -- Power 2 - Power 2 sensor. -- Power 3 - Power 3 sensor. -- Power 4 - Power 4 sensor.
Menu Tips These menu items will also be prefixed by the double up, menu item prefix. See above in this symbol table. postfix down arrow Selecting this menu item will navigate into a sub-menu prefix up arrow Current position is within a submenu, navigating “BACK” will go transition one menu level up. prefix, double up arrow Indicates the associated action will change the position to the highest level menu. This is a shortcut, which can save many navigation steps.
Section 5 Section 5 5.1 Maintenance Routine Maintenance No routine maintenance is generally required for the 3800 repeater. Periodic visual inspections are recommended for adequate cooling, secure mounting, and secure connections and cabling. It is also recommended that, using the repeater diagnostic mode, the repeater is checked for any recent fault conditions. 5.2 Firmware Updates Periodically, firmware updates may be available for the repeater and repeater controller cards.
Section 6 Section 6 Service Information Should service be necessary for this equipment, EF Johnson Technologies can provide technical assistance, service support, and replacement parts. 6.1 Product Warranty The warranty statement for this equipment is available from your product supplier or from Warranty Department EF Johnson Technologies 8050 Jetstar # 175 Irving, TX 75063 This information may also be requested from the Warranty Department by phone at the numbers listed in Section 6.2.
6.2 Service Information Factory Customer Service The Customer Service Department of EF Johnson Technologies provides customer assistance on technical problems and the availability of local and factory repair facilities. 6.2.1 BEFORE Contacting Customer Service It will be more efficient if you have critical information on hand before contacting customer support. Be sure to have the following: - Any necessary equipment model numbers and configuration options.
Service Information 8050 Jetstar # 175 Irving, TX 75063 6.2.3 Internet Home Page EF Johnson Technologies has a site on the World Wide Web internet that can be accessed for information on the company, products, systems, and regulations. The address is: http://www.efjohnsontechnologies.com 6.3 Returns for Repairs Before returning equipment for repair, contact EF Johnson Technologies Service Department as described in the preceding section.
Service Information depotrepair@efjohnson.com 6.4 Replacement Parts Replacement parts can be ordered directly from the Service Parts Department. To order parts by phone, dial the toll-free number as described in Section 6.2. When ordering, please supply the part number and quantity of each part ordered. EF Johnson Technologies dealers also need to give their account number.
