FunkTronic LIM-AC Manual 

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Inhaltsverzeichnis Begriffe und Abkürzungen 2 Technische Daten 2 Allgemeine Eigenschaften 3 Anschaltbeispiele Major 4a (5a), AC-gekoppelt 3 Steckerbelegung LIM-AC 4 Blockschaltplan 4 Abgleichanweisung 5 Programmieranweisung 6 Registerbelegung EEPROM LIM-AC 6 NF-Schwellwerte für die Register 00 und 01 7 Bestellinformationen 7 Allgemeine Sicherheitshinweise 8 Rücknahme von Altgeräten 8 Seite Terms and Shortcuts LIM-AC Line Interface Modul AC Line 2-Wire Connection Radio 2-Way Radio Base Station ZR Reference Termination Impedance, equivalent to a real 2-Wire Connection according to german TBR 15 Technical Data Power Supply Voltage +12 V DC +/- 30% Current consumption 25 mA AF-Input Level Factory default 500 mV Input impedance 600 Ohm AF-Output Level Factory default 500 mV Adjustment range - 24 dBm to - 5 dBm Input Level Line Factory default - 8 dBm ( 500 mV at AF-Output) Input impedance ZR Output Level Line Factory default - 6 dBm, AF (500 mV at AF-Input) plus pilot tone Output impedance ZR Weight 77 g Dimensions (with flange) 100 x 32 x 75 mm

lim-ac (01.11.2006) Kompetent für Elektroniksysteme The LIM-AC (Line Interface Modul AC) connects a 2 way radio station to its operator device via lea- sed line. It is certificated according to german TBR 15 and for this can be connected to private and public/leased lines. The 2 wire connection is plugged into the connector Line. The operator device is connected to the plug named Major. The connection LIM-AC to the Major operator device is established through a one -to-one cable. Standard network patch cords can be used. On the opposit side the devices FT634a, FT634aC or FT633AC can be used. All operator devices of the Major series (e.g. Major 4a, 5a, 6) can be directly connected to the LIM- AC. Exception: The Major BOS 4 and Major BOS 8 feature a busy line instead of the 12V power supply on the 8 pole plug. In this case the LIM-AC has to be powered via the separate power supply plug. Common Characteristics 2 LIM AC incl. notch filter option LIM AC incl. notch filter option 2 LIM-AC (2 wire) FT634aC (with channel switching) or FT633AC (with channel switching) or FT634a (without channel switchong) Parallel operation of multiple operator devices --> LIM AC requires notch filter option for pilot tone 2 2 FT624 FT634aC (with channel switching) or FT633AC (with channel switching) or FT634a (without channel switchong) Examples Major 4a (5a), AC coupled

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Connector Layout LIM-AC Pin Layout Radio circuit ST1, GND 1 AF-Output 2 Squelch-Output 3 GND 4 +12 V 5 PTT, active low 6 AF-Input 7 GND 8 Pin Layout Line ST2 nc 1 nc 2 a 3 b 4 2-wire connection nc = not connected Operator Device Block Diagram Power Supply 12 Volt Tip Plus pole Ring Ground 500 mV <== 500 mV ==> <-- --> -->

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Adjustment Optional notch filter, plugged in on multiple operator devices in parallel operation. ST3/GND RS232/TTL P1 AF-TX P2 AF-RX ST5/Pin 1 Jumper P1 (AF-TX) P1 sets the level of the pilot tone. The required AF level has to be set within the operator device. The factory default of P1 is set to the max. permitted level according to TBR 15. Pilot tone without AF --> - 10 dBm on line AF Input 500 mV --> - 8 dBm on line AF plus pilot tone --> - 6 dBm on line P2 (AF-RX) Feed line / 2 wire connection with required level and set AF-Output to 500 mV. Remark: In public communication networks it is mandatory to terminate the line with the reference terminating impedance of Zr while sending or receiving. Because of this the FT624 has to be used to connect multiple LIM-AC in parallel. This causes a higher insertion loss. Please consider the programming capabilities of pilot tone and relais. TXD RXD

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Programming Guide Register Function 00 Vref for Squelch detection leveö (Factory default --> 0x0A = 280 mV) 01 Vref for Squelch turn off level (Factory --> 0x06 = 140 mV) 02 Number of consecutive slopes onf start of Squelch A break of 3.6 ms without slope resets the counter Fectory default --> 0x05 = 6 slopes without break longer than 3,6 ms is detected as Squelch 03 Follow-up time for Squelch detection x 10 ms Factory default --> 0x50 = 50 x 10 ms = 500 ms 04 Locking time past PTT for Squelch detection x 10 ms Factory default --> 0x10 = 10 x 10 ms = 100 ms 05 TX-Mode Low-Nibble --> Pilotton bei TX 1 = an, 0 = aus High-Nibble --> Relais bei TX 0 = TX-Relais on for TX, RX-Relais on for RX 1 = TX-Relais always on, RX-Relais on for RX - default 2 = TX-Relais an bei TX, RX-Relais immer an 3 = TX-Relais immer an, RX-Relais immer an Factory default --> 0x11 = Relais and pilot tone on for TX Register description EEPROM LIM-AC Connect the plug ST3 of the LIM-AC to the serial interface of the PC via adapter TTL/RS232 (e.g. FunkTronic RS232AD1). Start a perminal emulation prgramm (e.g. Hyperterminal, minicom). The settings are 9600 baud, 8 data bits, no parity, one stopp bit and no flow control protocol. Hit the ENTER key and you will receive the following display message: LIM_AC (C) FunkTronic 02-03 Software: `LIM_AC` V1.1 vom 24.09.03 Pilotton: 3300 Hz Rxx Read EEPROM Register xx Pxx yy Program yy in EEPROM Register xx X Reset If you enter R followed by a two digit register number and a final ENTER the setting of the correspon- ding register will be displayed. Programming a register works the same way but with the P button instead of R. Enter P followed by the two digit register number followed by the register value and the final ENTER key. Input of X resets the unit.

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Register ca . AF level/mV Value 00 1,0 01 20 02 45 03 60 04 95 05 125 06 140 07 160 08 185 09 230 0A 280 0B 325 0C 370 0D 415 0E 465 0F no Squelch detection AF level for the registers 00 snd 01 Ordering Information Part No. Description 692500 Line Interface Module AC, LIM-AC 901200 Option notch filter 3300 Hz

lim-ac (01.11.2006) Kompetent für Elektroniksysteme Please read the operating instructions carefully before installation and setup. The relevant regulations must be complied to when working with 230V line voltage, two-wire- lines, four-wire-lines and ISDN-lines. It is also very important to comply to the regulations and safety instructions of working with radio installations. Please comply to the following safety rules: - All components may only be mounted and maintained when power is off. - The modules may only be activated if they are built in a housing and are scoop-proof. - Devices which are operated with external voltage - especially mains voltage - may only be opened when they have been disconnected from the voltage source or mains. - All connecting cables of the electronic devices must be checked for damage regularly and must be exchanged if damaged. - Absolutely comply to the regular inspections required by law according to VDE 0701 and 0702 for line-operated devices. - Tools must not be used near or directly at concealed or visible power lines and conductor paths and also not at and in devices using external voltage – especially mains voltage - as long as the power supply voltage has not been turned off and all capacitors have been discharged. Electrolytic capacitors can be still charged for a long time after turning off. - When using components, modules, devices or circuits and equipment the threshold values of voltage, current and power consumption specified in the technical data must absolutely be complied to. Exceeding these threshold values (even if only briefly) can lead to significant damage. - The devices, components or circuits described in this manual are only adapted for the specified usage. If you are not sure about the purpose of the product, please ask your specialized dealer. - The installation and setup have to be carried out by professional personnel. Factory returning of old equipment According to German law concerning electronic devices old devices cannot be disposed off as regular waste. Our devices are classified for commercial use only. According to § 11 of our general terms of payment and delivery, as of November 2005, the purchasers or users are obliged to return old equipment produced by us free of cost. FunkTronic GmbH will dispose of this old equipment at its own expense according to regulations. Please send old equipment for disposal to: FunkTronic GmbH Breitwiesenstraße 4 36381 Schlüchtern >>> Important hint: freight forward deliveries cannot be accepted by us. February 2nd , 2006 Subject to change, Errors excepted General Safety Instructions