Instruction Manual LE Series Local Extensions Rev. C LE10 LE20 LE30 LE40 CPI Communications, Inc. • 941 Hensley Lane • Wylie, TX 75098-4909 Phone (972) 429-7160 • WATS (800) 869-9128 • FAX (888) 437-5360 or (972) 429-7165 CONTENTS Section-Topic ........................................... Page # 1.0 2.0 3.0 3.1 3.2 3.3 3.4 4.0 5.0 5.1 5.2 5.3 6.0 - Specifications .......................................... - General Description ................................. - Installation Considerations ....................... - Connections ............................................ - Jumper settings ....................................... - Dip switch settings ................................... - Setting levels .......................................... - Parts List ................................................. - Top PCB Layout ...................................... - Top PCB Schematic ................................ - Bottom PCB Layout ................................. - Bottom PCB Schematic ........................... - Warranty ................................................. 1 2 2 2 3 4 4 4,5,6 7 8 9 10 11 1.0 SPECIFICATIONS Subject to change without notice. 1 Power Requirements board. 12 VDC to 16 VDC @ 35 mA idle, 175 mA maximum. Fused on circuit Receive Audio Input Level 88 mVRMS to 880 mVRMS to provide full speaker output. Audio Output to Speaker 1 Watt into 8 ohms with 13.8 VDC supply or using -WP option. Transmit Audio Output 2 mVRMS to 565 mVRMS into 600 ohms. Frequency Response +/- 3dB from 300 to 3000 Hz. 1000 Hz reference. Dimensions 9" x 4" x 7" inches Weight LE10 - 3 lbs, LE20 - 4 lbs, LE30 - 3 lbs, LE40 - 4 lbs. WP Option - 1 lb. Connections Screw terminal block for radio connections. 4 pin modular jack for handset. 6 pin modular jack for desk microphone. PTT Output Solid state to ground, can sink up to 2.5 amps. Keying to plus voltage available as an option. Monitor Output Normally closed or normally open relay contacts activated by hook switch or optional push button. F1/F2 Select (Optional) Latched or momentary, N.O. or N.C. relay contacts. Intercom (Optional) Optional momentary push button activated circuit that allows audio transmissions between local extensions with out keying the radio. May be used on or off-hook. 2.0 General Description The LE series local extensions are designed to provide remote control of an in-house conventional or trunked two way radio base station or repeater from a distance of up to 1000 feet. The LE series is available in four different housing configurations. They are: the LE10 telephone style unit with handset, the LE20 desktop console with desk microphone, the LE30 desktop console with built in electret condenser microphone and the LE40 desktop console with goose neck microphone. Standard features on all LE models include front panel PTT switch, LED transmit indicator, one watt amplified speaker with volume control and adjustable amplified modulation output. In addition to the above listed features, the console models LE20, 30 and 40, offer as standard features a panel mounted CTCSS (monitor) disable and intercom capability between units. The LE10, 20, 30 and 40 may be wall mounted by ordering the -WM option. When wall mounting the LE20 please note, no provisions are made for mounting the desk microphone. LE series units may be powered by the radio power supply or by ordering the optional wall plug-in transformer, -WP option. 3.0 Installation Considerations The LE series local extension will work with any radio system that will accept a 2 mVRMS to 565 mVRMS microphone audio input level and provides an 88 mVRMS to 880 mVRMS receive audio output level. If the radio is going to be used as a control point, the receive audio should be taken from a point after the squelch circuit that is unaffected by the radio's volume control. If the radio is not going to be used as a control point, speaker output may be used by setting the radio's volume control for a level that falls into the above range. The LE series requires 12 to 16 VDC @ 175 mA. This may be supplied from a central source at the radio site using a conductor in the hook-up cable or by using the -WP option. 18 to 22 gauge multi-conductor cabling is recommended with the number of conductors determined by the application and options installed. A minimum configuration will use 4 conductors, a maximum will use 14. 3.1 Connections Remove the top half of the housing by removing the four housing screws. The multi-conductor hook-up cable should be threaded through the opening provided in the lower left corner on the rear of the unit. Proceed by making the necessary connections to terminal blocks TB1 and TB2 (when included). The terminal blocks are detachable from the circuit board to allow easier access to the screw terminals. Table 1 describes the pin-out of TB1. Table 2 describe the pin-out of TB2. Table 1 Terminal # Description Function 1 RX HI Receive audio from radio. 2 RX LO Recieve audio return for non-ground referenced receive audio sources. 3 PTT HI Available option. Connect to +V for radios that key to plus voltage. 4 PTT PTT line from radio. 5 GND Ground from radio. 6 MOD OUT Microphone input to radio. 7 MON C Common contact of the form "C" monitor relay. 8 MON NC Normally closed contact of the form "C" monitor relay. 9 MON NO Normally open contact of the form "C" monitor relay. 10 +12 VDC Power supply voltage from radio. Not used if LE unit was ordered with -WP option. 2 Table 2 Terminal # Function Description 1 Parallel F1/F2 Allows Local Extensions to track parallel local extension or the channel display on a two channel radio. If tracking parallel local extensions, TB2-1 of all units should be connected together. If tracking the radio display, connect to a point in the radio that is greater than 3 VDC when the radio is on channel two. 2 Common Common connection of the SPDT F1/F2 relay. 3 F1 N.C. connection of the SPDT F1/F2 relay. 4 F2 N.O. connection of the SPDT F1/F2 relay. Before closing the unit make any "solder ball" jumper changes that may be necessary for your application. 3.2 Jumper Settings The LE series circuit board has 15 "Dot" jumpers. These jumpers are "in" if there is a solder short across it and "out" if there is not. Table 3 lists the jumpers by number and explains their function. Factory settings are underlined. Table 3 3 JP# IN OUT 1 For radios that key to plus voltage. For radios that key to ground. 2 Allows volume to be turned down completely. Prevents volume from being turned completely down. 3 Allows reception of parallel TX audio. Prevents reception of parallel TX audio. 4 Speaker always on. Speaker mute when handset off-hook. 5 For LE20 For LE10,LE30 and LE40. 6 For radios that key to ground. For radios that key to plus voltage. 7 For radios that key to plus voltage. For radios that key to ground. 8 For radios that key to ground. For radios that key to plus voltage. 9 For radios that key to plus voltage. For radios that key to ground. 10 For radios that key to ground. For radios that key to plus voltage. 11 F1/F2 tracks radio channel indication. F1/F2 tracks parallel local extension. 12 F1/F2 tracks parallel local extension. F1/F2 tracks radio channel indication. 13 F1/F2 tracks parallel local extension. F1/F2 tracks radio channel indication. 14 F1/F2 tracks parallel local extension. F1/F2 tracks radio channel indication. 15 Mute speaker when this unit PTTs. Do not mute speaker when this unit PTTs. 3.3 Dip Switch Settings Table 4 describes the functions provided by the dip switch on the bottom of the unit. The factory setting are underlined. Table 4 Switch # ON OFF 1 Low impedance load to radio RX out. High impedance load to radio RX out. 2 OPTION - Latched F1/F2 output. OPTION - Momentary F1/F2 output. 3 Monitor on front panel PTT. Do not monitor on front panel PTT. 4 Speaker mute on any PTT. Depends on setting of JP15. 5 Boosts level of parallel TX audio received. Normal 6 Low impedance radio mic input. High impedance radio mic input. 7 High level RX audio from radio. Low level RX audio from radio. 8 For ground referenced RX audio from radio. For non-ground reference RX audio from radio. 3.4 Setting Levels Receive audio is controlled via the front panel volume control. Handset audio for the LE10 is set via R28 on the circuit board. It is factory set at mid range. The transmit audio level is set via R44 on the circuit board. It should be set to provide the appropriate deviation on the radio. 4.0 Parts List LE series Bottom PCB #700-LEBB-200 revision C Reference Description CPI Part # CAPACITORS C1,7,8,9,10,11,13,14,25 C2 C4 C5 C6,16 C12 C15 C17,18,20,23 C19 C22,29 C24 C27 C28 C3,21 .1uF 22uF Electrolytic 47pF Mono Cer Dip 2200pF Mono Cer Dip 100uF Electrolytic 1uF Electrolytic Non-polar 10uF Electrolytic 220uF Electrolytic 4.7uF Electrolytic .001uF Mylar 1000uF Electrolytic 100pF Mono Cer Dip 1uF Electrolytic .01uF 208-0212-104 208-4022-266 208-0071-470 208-0071-222 208-2021-107 208-2000-001 208-2021-106 208-2021-227 208-4042-475 208-0212-102 208-1021-108 208-0071-101 208-4052-105 208-0000-103 DIODES D1,2,3,4,5,6,7,8,9 D10 D11,12,13,14 1N4148 1N4746 1N4004 212-0001-001 212-0100-019 212-0002-004 4 Reference Description CPI Part # TRANSISTORS Q1,4,6 Q5,8 Q7 Q9 2N2907 PNP Transistor MJE520 NPN Transistor 2N2222 NPN Transistor 2N7000 240-2907-000 212-0001-002 240-2222-000 240-7000-000 10K 5% 1/4 Watt 242-0001-103 47K 5% 1/4 Watt 242-0001-473 100 5% 1/4 Watt 100K 5% 1/4 Watt 242-0001-101 242-0001-104 51K 5% 1/4 Watt 390 5% 1/4 Watt 5.1K 5% 1/4 Watt 3.9K 5% 1/4 Watt 24K 5% 1/4 Watt 12K 5% 1/4 Watt 22K 5% 1/4 Watt 470K 5% 1/4 Watt 1.3Meg 5% 1/4 Watt 220 5% 1/4 Watt 1.2K 5% 1/4 Watt 1.8K 5% 1/4 Watt 620 5% 1/4 Watt 4.7K 5% 1/4 Watt 33K 5% 1/4 Watt 8.2K 5% 1/4 Watt 120K 5% 1/4 Watt 1K 5% 1/4 Watt 2.7 5% 1/4 Watt 15K 5% 1/4 Watt 1Meg 5% 1/4 Watt 10 Meg 5% 1/4 Watt 242-0001-513 242-0001-391 242-0001-512 242-0001-392 242-0001-243 242-0001-123 242-0001-223 242-0001-474 242-0001-135 242-0001-221 242-0001-122 242-0001-182 242-0001-621 242-0001-472 242-0001-333 242-0001-822 242-0001-124 242-0001-102 242-0001-027 242-0001-153 242-0001-105 242-0001-106 POTENTIOMETERS R28 R44 R77 25K Pot 5K Pot 250K Pot 242-0101-253 242-0101-502 242-0101-254 INTEGRATED CIRCUITS U1,8 U2 U3,6 U4,5 U7 Quad Op Amp Dual Flip-Flop Quad Analog Gate Hex Inverter Audio Amp 420-L347-000 412-4013-000 420-4066-000 402-0014-000 420-0380-000 MISC. K1,K2 J1 (LE10) J1 (LE20) J2 SPDT Relay Handset Jack Desk Mic Jack 26 Pin Header 230-0001-002 228-0041-010 228-0041-186 228-0101-001 RESISTORS R1,13,20,22,26,31,36, 68,69,85 R2,4,23,24,34,35,37,38, 39,40,41,43,47,49,51, 53,54,64 R3,11, R5,16,33,50,73,75,79 80,81 R6 R9 R10 R12,15 R64 R18,30 R19,21,61 R25,66 R27 R29 R32 R42,45,46,56,78 R48 R58 R59 R62,63 R67 R70 R71,72 R74 R76 R82,84 5 Reference Description CPI Part # F1 TB1 TB2 S1 (LE10) .5 Amp Fuse 10 Position Terminal Block 4 Position Terminal Block Hook Switch Cap for S1 8 Position Dip Switch Handset Ash coil cord 218-0001-005 248-0020-010 248-0020-004 244-0100-009** 244-0100-008** 244-0002-008 234-0005-013 600-0013-007 S2 Handset Ash coil cord LE series Top PCB #700-00FP-200 revision C Reference Description CPI Part # D1,D3 D2 R1 LS1 S1,S2,S4 S3 X1 (LE10 & LE30) X1 (LE40) LED Green Dot LED Red Dot 10K Volume Pot 8 Ohm Oval Push Button Switch, Black Push Button Switch, Red Electret Microphone Gooseneck Microphone 26 position cable assembly 214-0005-002 214-0003-001 242-0115-103 234-0001-004 244-0030-000 244-0030-002 234-0002-004 234-0003-003 600-0TSR-025 ** item not used on units produced after 9/1998 6 P C B View - C ontrol P anel #700-00F P -200 C omponent S ide R1 LS 1 JP1 D1 S4 REV C F R ONT PANE L X1 S2 CPI C OMMUNIC AT IONS C 1993 D2 S3 D3 700-00F P -200 J1 S1 S /N 1PJ 1 SL 1R 1D 4S 3D 1J L ENAP TN O R F C VER 0 0 2- P F 0 0- 0 0 7 1X 2S I P C 3991 C S N O I TA C I N UMM O C 1S 2D N/ S S older S ide 3S 1 2 3 4 A VC C MONITOR HE ADE R 5 5 4 3 2 1 B F2 LE D G R N D3 OF F -B OAR D. LOC AT E D B OR G T HIS PAR T IS E NC ODE R INP UT INT E R C OM JP1 K S 11R 9 K S 11R 9 V IO GR N S2 PTT 10K P O T R1 WHT S1 T HIS PAR T IS LOC AT E D OF F -B OAR D. A LS 1 B LK C ON26A 1 3 5 7 9 11 13 15 17 19 21 23 25 J1 S P E AK E R C 2 4 6 8 10 12 14 16 18 20 22 24 26 C VC C Da te: S iz e A T itle F1 LE D G R N D1 WM54B T X1 PTT C P I C ommunica tions , Inc. K S 11R 3 F1 / F2 S3 K S 11R 9 S4 PTT E D Monda y, S eptember 18, 1995 Document Number S he e t 1 E C ontrol P a nel - DR , L E & T R S eries PTT LE D R E D D2 F R ONT PANE L MIC D of 1 R ev C 1 2 3 4 8 7 6 5 4 3 2 1 R4 VB R71 R30 R31 2200 PF R21 .1uF 12K 10K 22K 47K R28 HANDSET EARPIECE AUDIO ADJUST U3A 4066 2 R5 1 2 R3 To J1-3 EARPIECE C2 1 3 25K R6 100 22uF C1 .1uF LF 347 13 R32 1.2K 1 R29 220 To J2-1 VOL HI + 100K 2.7 220uF C23 U1A 2 14 C10 RX HI To TB1-1 B+ - 3 C5 VB U3B 4066 To J2-2 VOL WPR C13 11 2 + 6 - R50 10 51K U1C 10 16 R55 100K R33 100K 4 1 C21 .01uF C19 4.7uF LF 347 *-INDICATES SWITCH IS FACTORY SET IN THE CLOSED POSITION. R18 JP3 To TB1-2 VB OPEN TO PREVENT RECEPTION OF PARALLEL TX AUDIO VB 8 12K OPEN TO PREVENT VOLUME FROM BEING TURNED DOWN COMPLETLY JP2 CLOSE FOR RX LOW GROUND VB 4 U3C CONTROL 2 J2 VB VOL HI VOL LO SPEAKER HI MONITOR SWITCH INTERCOM SWITCH F2 LED ENCODER INPUT To J1-2 DESK MIC BIAS R12 9 47pF 3.9K R75 100K CONTROL 5 5 R17 R13 10K 3 R16 To J2-13 U8C + 9 - R59 ENCODER INPUT 8 100K U3D 4066 33K LF 347 C26 .1uF CLOSE TO BOOST PARALLEL TX AUDIO RECEPTION 8 5 12 R15 C3 3.9K .01uf R60 1M 1 B+ HOOK GND GND To J2-4 PANEL/BOOM MIC HI S1 IS NOT INSTALLED IN CONSOLE UNITS. HANDSET OFF-HOOK LF 347 3 S1 VB 6 12 13 14 R77 250K VOL WPR PANEL MIC HI PTT LED PTT SWITCH F1/F2 SWITCH F1 LED 2 4 6 8 10 12 14 16 18 20 22 24 26 CON26A U1D 9 + 10 .001uF GND GND R14 - C22 MOD OUT 1 3 5 7 9 11 13 15 17 19 21 23 25 C6 100uF 4066 To TB1-6 D *-PINS 2,3,4,5,7,10,11,12 GND C4 VB C25 .1uF R9 390 R11 100 SW8* 220uF R72 2.7 VB RX LO .1uF 12 7 1 + C8 5 7 10K R19 22K To J2-5 SPEAKER HI C20 LM380 100K * LF 347 10K SW7* D To J2-3 VOL LO CONTROL 1 U1B 6 - 10 SW1 CLOSED=200 OHMS OPEN=12K IMPEDANCE .1uF R22 8 + 9 R20 U? 8 U4A R35 CONTROL 4 2 SW5 R58 4.7K R67 120K PARALLEL AUDIO ADJUST HOOK B+ R10 5.1K R63 IS NOT INSTALLED FOR LE20'S. C27 1 40106 S1 CONTACTS ARE REPLACED WITH A JUMPER FOR LE30'S AND LE40'S. 100pF VB CONTROL 1 2 47K CRADLE SW R63 8.2K R34 47K D3 JP4 CONTROL 2 CLOSE FOR SPEAKER ALWAYS ON. 1N4148 R66 R62 R65 U4B R85 10K 2 RX LO 11 R48 U6A 4066 2 5 22K 3 1 U8A 2 1 1uF LF 347 R44 5K OPEN FOR HIGH IMPEDANCE MIC INPUT 2 3 R64 C7 24K .1uF To J1-1 HANDSET/DESK MIC HI CONTROL 4 4 40106 1 R36 10K R39 47K LF 347 JP5 13 6 SW6* 1 RX HI 3 C 6 7 12 TB1 11 + 47K 8.2K U8B 10 - U6B 4066 C12 + C R49 MODULATION OUT ADJUST R61 470K - VB VB U5E U5B VB To J2-6 PTT LED R42 11 CONTROL 1 10 3 4 CONTROL 3 J1 CLOSED FOR LE20 1.8K 3 PTT HI 40106 DESK MIC BIAS HANDSET/DESK MIC HI PTT EARPIECE GND MONITOR SWITCH U4C 40106 620 R37 4 PTT 5 5 GND 6 47K 40106 SW4 6 MOD OUT JP8 D4 8 MON NC JUMPER 1N4148 9 MON NO JP7 7 MON C 13 2 1 4 3 6 5 HANDSET JACK TOP VIEW 4 CLOSED FOR SPEAKER MUTE ON ANY PTT 10 +12 VDC INPUT R76 JUMPER TB 10POS R38 47K U8D B+ 13 - 12 + 1M JP9 C29 .001uF B+ 14 B+ JUMPER R2 R53 47K LF 347 47K R73 100K To TB1-7 JP10 MON C U4D R84 10M OPTIONAL PARTS R8 JUMPER K1 10K To TB1-8 MON NC 1 To TB1-9 MON NO 2 PTT HI To TB1-3 U4E R1 R83 1K R82 10M D6 Q1 2N2907 8 9 10 10K 11 12 Q2 2N2907 11 1N4148 47K 40106 6 To J2-7 and J1-5 MONITOR SWITCH R54 40106 D1 1N4148 D7 1N4148 MZ12HZ Q3 MJE 520 B C28 B R74 15K 1uF R7 10K R57 10K CLOSE FOR KEY TO +V R23 47K U5A U5F U5C JP6 6 PTT R43 R25 47K 470K To J2-10 F1/F2 SWITCH 5 To TB1-4 1 R41 R40 47K 47K 2 13 12 40106 3 JP1 To J2-9 INTERCOM CONTROL 5 B+ CONTROL 3 SW3* 40106 B+ CLOSE TO MONITOR ON PTT 40106 CLOSE FOR KEY TO GROUND R56 JP15 CONTROL 2 Q5 1.8K R80 8 R47 47K .1uF B+ 2 TB 4POS 8 9 11 D2 1N4148 D Q 13 Q 12 1.8K R46 CLK R78 1.8K JP11 JUMPER To J2-11 F2 LED R45 S R 3 4013 6 11 12 5 4 4 F2 D CLK To TB1-10 +12 VDC INPUT To J2-12 F1 LED B+ F1 4013 D13 .5 AMP R27 1.3M VB Q8 MJE 520 1.8K Q7 2N2222 1N4004 D14 1N4004 D11 1N4004 R70 1K R69 TB3 MZ12HZ B+ 10K 1 D12 2 C11 .1uF CLOSED=LATCHED OUTPUT OPEN=MOMENTARY (100mS) OUTPUT JP12 JUMPER TB3 AND WALL PLUG-IN TRANSFORMER INCLUDED WHEN -WP OPTION IS ORDERED. JP13 JUMPER D8 Q6 2N2907 C16 100uF 1N4148 C15 10uF Q9 2N7000 100K D9 1N4148 C18 220uF A C14 .1uF R68 10K 4 R81 D10 1N4746 TB 3POS U6C 4066 5 C17 220uF 1N4004 3 R79 100K 15 A C24 1000uF 2 SW2 3 TO TRACK F1/F2 DISPLAY OF THE RADIO, CONNECT TB2-1 TO A POINT IN THE RADIO WHICH IS GREATER THAN 3 VDC DURING F2 INDICATION. 13 40106 U2B R Q 10K 12 47K 10 Q 2 R26 Q4 2N2907 K2 1 To J2-8 and J1-4 PTT SWITCH R52 100K D5 1N4148 U2A 6 1 S 47K 1 PARALLEL F1/F2 U4F B+ 40106 R24 TB2 CLOSE TO MUTE SPEAKER WHEN THIS UNIT PTTS. 1N4148 C9 3 F1 R51 47K U5D 9 2 COM. 14 D15 MJE 520 -2F OPTION PARTS IN DASHED AREA INCLUDED ONLY WHEN -2F OPTION IS ORDERED. CPI COMMUNICATIONS, INC. (972) 429-7160 (800) 869-9128 JP14 Title LE SERIES - LOCAL EXTENSION JUMPER 8 7 6 5 4 3 2 Size D Document Number Date: Wednesday, May 28, 2003 Rev C Sheet 1 1 of 1 Location of externally adjus table controls . Model # S erial # A s s embled by Tes ted by Mod J ack P ac ked by R 89 R X Input Dip S witch R 96 E arpiece Adj. C OMMUNIC AT IONS , INC . 1186 C OMME R C E DR IV E , R IC HA R DS ON, T X. 75081 214-437-5320 800-869-9128 FA X 214-437-5360 R 63 Mod Out R 75 Mic Level 15 6.0 Warranty CPI Communications, Inc. warrants each product manufactured by it to be free from defective material and workmanship and agrees to remedy any such defects or to furnish a new part in exchange for any part of any unit of its manufacture which under normal installation use or service discloses such defects, provided the unit is delivered by the customer to our authorized service center intact, with all transportation charges pre paid within two years from date of shipment to the original purchaser. Exceptions are semiconductors which carry only the manufacturer's standard warranty and lamp indicators and fuses which are warranted to be operational when shipped from the factory. No credit will be given for unauthorized repair. This warranty does not extend to any of our products which have been subjected to misuse, neglect, accident, incorrect wiring not our own, improper installation, or to use in violation of instructions furnished by us nor extended to units which have been repaired or altered outside of our factory or authorized service center, nor to cases where the serial number thereof has been removed, defaced, or changed, nor to accessories used therewith not of our own manufacture, nor to finish or appearance items. This warranty is in lieu of all other warranties expressed or implied and no person is authorized to assume for us any other liability in connection with the sale of our products. Please Note: CPI products are not authorized for use in applications where nonperformance may be life threatening, or where substantial risk to life and property may be present, without express written consent of the president of CPI Communications, Inc. CPI Communications, Inc. shall never be liable for consequential or indirect damages. 1 1