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5-5

Capacitor, EL, 10µF, 50V

51821110

C20

Capacitor, CD, 100pF, 100V

1501R1011L

C21

Capacitor, CD, 100pF, 100V

1501R1011L

C22

Capacitor, CM, 0.1µF, 50V

52676113

C23

Capacitor, CD, 10pF, 500V

52157502

C24

Capacitor, CM, 0.1µF, 50V

52676113

C25

Capacitor, EL, 22µF, 50V

51821640

C26

Capacitor, EL, 47µF, 16V

51821068

C27

Capacitor, EL, 22µF, 50V

51821640

C28

Capacitor, CD, 100pF, 100V

1501R1011L

C29

Capacitor, CD, 100pF, 100V

1501R1011L

Capacitor, EL, 100µF, 25V

51821524

C30

Capacitor, CD, 100pF, 100V

1501R1011L

C31

Capacitor, CD, 100pF, 100V

1501R1011L

C32

Capacitor, CM, 0.1µF, 50V

52676113

C33

Capacitor, CD, 10pF, 500V

52157502

C34

Capacitor, EL, 47µF, 16V

51821068

C35

Capacitor, EL, 22µF, 50V

51821640

C36

Capacitor, EL, 22µF, 50V

51821640

C37

Capacitor, CD, 100pF, 100V

1501R1011L

C38

Capacitor, CD, 100pF, 100V

1501R1011L

C39

Capacitor, CD, 100pF, 100V

1501R1011L

Capacitor, CM, 1nF, 50V

52676101

C40

Capacitor, CD, 100pF, 100V

1501R1011L

C41

Capacitor, CM, 0.1µF, 50V

52676113

C42

Capacitor, CD, 10pF, 500V

52157502

C43

Capacitor, CM, 0.1µF, 50V

52676113

C44

Capacitor, EL, 22µF, 50V

51821640

C45

Capacitor, EL, 47µF, 16V

51821068

C46

Capacitor, EL, 22µF, 50V

51821640

C47

Capacitor, CD, 100pF, 100V

1501R1011L

C48

Capacitor, CD, 100pF, 100V

1501R1011L

C49

Capacitor, CD, 100pF, 100V

1501R1011L

Capacitor, EL, 100µF, 25V

51821524

C50

Capacitor, CD, 100pF, 100V

1501R1011L

C51

Capacitor, CM, 0.1µF, 50V

52676113

C52

Capacitor, CD, 10pF, 500V

52157502

C53

Capacitor, EL, 22µF, 50V

51821640

C54

Capacitor, EL, 47µF, 16V

51821068

C55

Capacitor, EL, 22µF, 50V

51821640

C56

Capacitor, CM, 0.1µF, 50V

52676113

C57

Capacitor, EL, 22µF, 50V

51821640

C58

Capacitor, CM, 0.1µF, 50V

52676113

C59

Capacitor, CD, 100pF, 100V

1501R1011L

Capacitor, CM, 1nF, 50V

52676101

C60

Capacitor, EL, 10µF, 50V

51821110

Table 5.6

Reference 9027-6245-01 Drawing, Section 6

Summary of Contents for MCS-325

Page 1: ...udible 24 kHz signal into the corresponding intercom line The MCE 325 can send and receive talk off signals VOX circuit The MCE 325 may be programmed for voice activation of the microphone Simple IFB...

Page 2: ...1 93kg Material Finish Thermo plastic front panel aluminum case light gray finish Connectors Intercom Line Connector XLR type 3 pin male female loop through on two wire Channel 1 and 2 or four wire c...

Page 3: ...9350 6464 00 Rev L 11 2006 USER INSTRUCTIONS MODEL MCE325 PROGRAMMABLE USER STATION...

Page 4: ...992 Please include a note in the box which supplies the company name address phone number a person to contact regarding the repair the type and quantity of equipment a description of the problem and t...

Page 5: ...ation 2 1 Internal Programming and Adjustments 2 1 General 2 1 Intercom Line Channel Configurations DS1 DS3 J6 J7 J19 J20 2 2 Front Panel Setup Mode Lock out DS4 2 5 ISO DS5 2 5 Remote Talk off DS7 2...

Page 6: ...ton Lock 3 4 Latch Disable 3 4 Instant Mic 3 5 Reset 3 5 Maintenance 4 1 Preventive Maintenance 4 1 Factory Support Information 4 1 Corrective Maintenance 4 1 Access 4 1 Front Panel Removal 4 1 Cleani...

Page 7: ...0 Mic Kill Transmit Test 4 11 Call Transmit Test 4 11 Call Receive Test 4 11 ISO Test 4 12 Remote Mic Switch Test 4 12 Program Lockout Test 4 12 Noise Checks 4 12 Parts Lists 5 1 Packaging Assembly 90...

Page 8: ...iv...

Page 9: ...he MCE325 include Call Signaling Call signaling is accomplished using an inaudible 20 kHz signal to activate a call indicator LED Remote talk off Active unattended remote station microphones may be de...

Page 10: ...ons are available that allow the LED light to pass through Order RTS part no 9000 2698 800 Volume Controls CH1 VOL 1 This control adjusts the volume of channels 1 and or 3 to the left headphone when s...

Page 11: ...els three and four from oscillating when the MCE325 is in two channel mode External Program Input Two inch phone jacks are provided for external program input The station accepts line level balanced i...

Page 12: ...circuit board DIP switches 3 Internal programming via circuit board jumpers The most commonly programmed options are assigned to the front panel for convenience Detailed information on internal progra...

Page 13: ...dB Frequency Response 100 Hz to 8 000 Hz 3 dB Headphone Impedance 50 to 600 ohms Output Power 150 mW into 50 ohms Output Voltage Level 8 Vp p Speaker Amplifier Maximum Voltage Gain 30 dB Frequency Re...

Page 14: ...or use with MCE325 but may also be used as a general purpose monitor for program material Impedance 8 ohms DCR5 5 to 7 ohms Power Rating 5W RMS continuous Sensitivity 90 dB 2 dB 2 83 volts one meter o...

Page 15: ...3 Standard four channel two wire configuration Figure 1 4 A four channel two wire configuration with two channels used for IFB s Figure 1 5 Configuration for one or two two wire channels and one four...

Page 16: ...3 2 5 U s e r I n s t r u c t i o n s Figure 1 6 Standard two channel four wire configuration Figure 1 7 Multiple interconnected stations in four channel two wire configuration with two channels used...

Page 17: ...Multiple interconnected stations using one four wire intercom channel and two two wire channels for IFB s Figure 1 9 A four channel two wire configuration with two channels used for IFB s shown with T...

Page 18: ...1 10 M C E 3 2 5 U s e r I n s t r u c t i o n s Figure 1 10 Configuration for an ENG truck using one four wire intercom channel and two two wire IFB s...

Page 19: ...1 11 Figure 1 11 MCE325 button configurations...

Page 20: ...1 12 M C E 3 2 5 U s e r I n s t r u c t i o n s...

Page 21: ...nt from the defaults you will have to remove the top cover of the unit see Figure 2 1 and make the required changes If you do change the internal programming it may be useful to note the changes for f...

Page 22: ...for listen In four channel mode each two wire line uses one channel selector button for both talk and listen The two channel mode should be selected under only two circumstances 1 When only one or two...

Page 23: ...shorted Two wire operation J7 Selects two wire CH 3 and CH 4 or four wire CH B output See J20 for Ch B input CH 3 and CH 4 selected pins 2 3 shorted Four wire CH B output selected pins 1 2 shorted Two...

Page 24: ...2 4 M C E 3 2 5 U s e r I n s t r u c t i o n s Figure 2 2 Internal DIP switches jumpers and level trimmers...

Page 25: ...tended user station with an activated microphone is introducing unnecessary noise into a line DIP switch DS7 enables disables this feature When remote talk off is enabled the talk off signal is activa...

Page 26: ...of your own voice heard in your headset when the microphone is on and the speaker is off It does not affect the actual level heard on the intercom lines This trimmer is preset so that your voice leve...

Page 27: ...2 7 Figure 2 3 Mounting configurations...

Page 28: ...e channel A output channel A input is connected at the auxiliary connector Intercom line connector J10 is used for connection of two wire lines to channels three and four full duplex operation or for...

Page 29: ...ker is connected using a inch phone plug CAUTION The MCE325 provides a bridging type speaker output DO NOT LET EITHER SPEAKER LEAD CONTACT GROUND The external speaker is turned on and off by the front...

Page 30: ...off from the front panel ISO Connection To connect an RTS Model VCP6A VCP12A or VCP12B ISO Control Panel to the MCE325 connect the unswitched microphone output of the MCE325 pins 1 and 14 of the auxi...

Page 31: ...ad to pin 13 of the auxiliary connector and connect the minus lead to pin 10 or 11 A 0 5 Amp slo blo fuse should be connected in line for 17 to 24 volt operation Remote Speaker Mute Control When the M...

Page 32: ...s e r I n s t r u c t i o n s Carbon microphone headset connector inch tip ring sleeve phone jack Table 2 9 Carbon microphone headset connector SECTION FUNCTION Tip Carbon microphone Ring Headphone Sl...

Page 33: ...longer the action will be momentary and the button will turn off when released All other buttons are latching only press to activate press to release NOTE The latching action can be disabled through t...

Page 34: ...wo wire lines the station operator s voice signal is not only transmitted onto the intercom lines but also echoed back into the MCE325 receive circuits This can result in acoustic feedback when the MC...

Page 35: ...button for the channel to be deactivated This will cause the talk off signal to be transmitted 3 Release the talk button to end the talk off signal transmission Front Panel Programming Activating Set...

Page 36: ...ral or stereo operation With the Mono submenu selected press the Mono button one or more times to select the type of headphone output as follows Short LED blink 50 on 50 off Stereo default Long LED bl...

Page 37: ...ELECTOR BUTTON USAGE CH 1 VOL 1 CH 2 VOL 2 1 TALK 1 LISTEN 2 TALK 2 LISTEN Configuration 1 Two 2wire lines CH 1 CH 2 Default configuration CH 1 CH 2 CH 1 TALK CH1 LISTEN CH 2 TALK CH 2 LISTEN Configur...

Page 38: ...3 6 M C E 3 2 5 U s e r I n s t r u c t i o n s...

Page 39: ...nel only Access 1 Reference the AS6464 drawing in section 6 Remove the four long screws item 4 and the two short screws item 5 2 Lift off the top cover 3 Pull the front panel slightly forward to clear...

Page 40: ...600 ohms but with the 600 ohms in the circuit 0 dBu The following procedures involve changing the MCE325 programming It may be useful to note the current positions of all jumpers and DIP switches so t...

Page 41: ...2 Set J24 to the balanced mic position pins 1 and 2 shorted 2 Connect a 200 ohm termination resistor across each of the four intercom channels CH 1 J8 pins 1 and 2 CH 2 J8 pins 1 and 3 CH 3 J10 pins...

Page 42: ...ohm resistor across the USMB output Frequency Response and Level Check Mic to Line Four Channel Two Wire Mode 1 Activate the MIC ON button All other front panel buttons should be off 2 Connect an AC...

Page 43: ...e the 200 ohm termination resistors Sidetone Null Test and Adjustment NOTE This procedure verifies sidetone null operation and optimizes nulling for an ideal 200 ohm line termination Since actual inte...

Page 44: ...main board to obtain 8 7 dBu 2 1 VAC at the left headphone output Level and Frequency Response Check Intercom Channel to Headphone 1 Set all front panel buttons to off 2 Remove the signal generator f...

Page 45: ...The speaker output should be 39 5 dB 2 dB below the reference level set in step 7 12Reset R157 to the maximum clockwise position and remove the speaker dim ground U15 pin 9 13Set the signal generator...

Page 46: ...el at he speaker output It should be 6 dBu 2 dBu Program volume at maximum 4 Set the signal generator to 0 dBu 100 Hz The speaker output should be 1 3 dBu 2 dBu 5 Set the signal generator to 0 dBu 10...

Page 47: ...Wire A input AUXILIARY connector J22 pins 8 and 21 Set the generator to 0 dBu 1 kHz 3 Move jumper J19 to short pins 3 4 Four Wire A input always on 4 Set the CH 1 3 volume control to measure 0 dBu at...

Page 48: ...resistor from the carbon mic input VOX Test 1 Remove the signal from the CARBON MIC HEADSET jack and reconnect it to the DYN MIC HEADSET jack mic input J2 pins 1 2 2 Set the generator to 45 dBu 1 kHz...

Page 49: ...n intercom channel 1 tap the CALL button and while the call LED is flashing press and hold the CH 1 TALK key 3 Check that the signal on the channel 1 output is between 19 9 to 20 1 kHz at 9 8 dBu 2 dB...

Page 50: ...does not enter program mode 3 Reset DS4 to off Noise Checks 1 Connect a 150 ohm load across the dynamic mic input J2 pins 1 and 2 2 Connect an 8 ohm load across the speaker output 3 Connect 51 ohm lo...

Page 51: ...Measure noise at U1 pin 1 mic preamp out The voltmeter should read 26 dBu or less 14Turn on the PANEL MIC button The meter should read 37 dBu or less 15Turn all buttons off 16Measure noise at U12 pin...

Page 52: ...4 14 M C E 3 2 5 U s e r I n s t r u c t i o n s...

Page 53: ...IFB 1 9150 6643 11 Keycap Printed IFB 2 9150 6643 12 Keycap Printed LISTEN 3 9150 6643 13 Keycap Printed LISTEN 4 9150 6643 14 Keycap Printed SSA 1 9150 6643 15 Keycap Printed SSA 2 9150 6643 16 Keyc...

Page 54: ...emale J2 2018 0077 00 10 Plug Panel Microphone 4501 0063 00 11 Lightpipe Call Indicator 4501 0062 00 12 Screw Thread Forming 51856 003 13 Connector Housing 3 pin P1 59958 003 14 Phone Jack with Metal...

Page 55: ...rew 4 40 x 1008 4023 00 13 Nut Hex Kep 4 40 1007 0001 00 15 Nut Hex Kep 4 40 1007 0002 00 16 Lug Solder 16 51378 002 17 Shrink Tubing LP Table 5 5 Reference 9020 6324 00 Drawing Section 6 Item No Desc...

Page 56: ...tor EL 4700 F 35V 1513R4784G C126 Capacitor CD 0 1 F 500V 1510R1042Q C127 Capacitor EL 10 F 50V 51821110 C128 Capacitor EL 10 F 50V 51821110 C129 Capacitor EL 100 F 25V 51821524 C13 Capacitor CM 0 1 F...

Page 57: ...01R1011L C39 Capacitor CD 100pF 100V 1501R1011L C4 Capacitor CM 1nF 50V 52676101 C40 Capacitor CD 100pF 100V 1501R1011L C41 Capacitor CM 0 1 F 50V 52676113 C42 Capacitor CD 10pF 500V 52157502 C43 Capa...

Page 58: ...100V 1501R1011L C8 Capacitor CM 0 1 F 50V 52676113 C80 Capacitor Mylar 1nF 100V 1514R1022L C81 Capacitor Mylar 1nF 100V 1514R1022L C82 Capacitor EL 1 F 50V 51821106 C83 Capacitor EL 10 F 50V 51821110...

Page 59: ...00 J1 Connector 3 pin 59958103 J10 Connector Audio 59893001 J14 Jack PC Mt 3 8 2013004900 J15 Jack PC Mt 3 8 2013004900 J16 Header 3 pin 2007009900 J17 Header 3 pin 2007009900 J18 Header 3 pin 2007009...

Page 60: ...Ohm 1 1 8W 54035100 R126 Resistor MF 20K Ohm 1 1 8W 54035200 R127 Resistor MF 10K Ohm 1 1 8W 54035100 R13 Resistor CF 22K Ohm 5 1 8W 524154028 R130 Resistor MF 20K Ohm 1 1 8W 54035200 R131 Resistor MF...

Page 61: ...stor CF 270K Ohm 5 1 8W 52154002 R199 Resistor CF 10K Ohm 5 1 8W 52154036 R2 Resistor Cf 2K Ohm 5 1 8W 52154053 R20 Resistor CF 100K Ohm 5 1 8W 52154012 R200 Resistor CF 2 2M Ohm 5 1 8W 52154980 R201...

Page 62: ...m 5 1 8W 52154012 R43 Resistor MF 20K Ohm 1 1 8W 54035200 R44 Resistor CF 2 7 Ohm 5 1 8W 52154122 R45 Resistor CF 2 7 Ohm 5 1 8W 52154122 R46 Resistor MF 20K Ohm 1 1 8W 54035200 R47 Resistor MF 20K Oh...

Page 63: ...istor MF 20K Ohm 1 1 8W 54035200 R94 Resistor CF 100 Ohm 5 1 8W 52154084 R95 Resistor CF 100K Ohm 5 1 8W 52154012 R96 Resistor CF 22K Ohm 5 1 8W 524154028 R97 Resistor CF 47K Ohm 5 1 8W 52154020 R98 R...

Page 64: ...C UCN5821A 160358210A U27 IC Voltage Regulator LM317 53290000 U28 IC EEPROM 1024 Bit 93C56AN NA 1603013800 U29 Assy Software Version 1 6 9020634816 U3 IC Analog Switch CD4053BE 46638P1 U30 IC Quad 2 i...

Page 65: ...Table 5 7 Reference AS6246 Drawing Section 6 Ref No Description RTS Part No R1 R3 Pot 10K Ohm Audio 1406003901 DS9 LED Super Bright Red 1801001900 DS1 DS8 LED Super Bright Yellow 1801002200 S1 S8 Keys...

Page 66: ...5 14 M C E 3 2 5 U s e r I n s t r u c t i o n s...

Page 67: ...3 S E C T I O N CHAPTER6DIAGRAMS...

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Page 76: ...12000 Portland Avenue South Burnsville MN 55377...

Page 77: ...F 01U 193 228 Rev 13 NOVEMBER 2013 USER INSTRUCTIONS MODEL MCE 325 PROGRAMMABLE USER STATION...

Page 78: ...no expressed or implied warranty with respect to anything contained in this manual and shall not be held liable for any implied warranties of fitness for a particular application or for any indirect...

Page 79: ...r your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at...

Page 80: ...Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 4 MCE 325 Programmable User Station...

Page 81: ...nector 10 Programming 11 Power 11 Mounting Configuration 11 MCE 325 Specifications 12 General 12 Microphone Preamplifier 12 Headphone Amplifier 12 Speaker Amplifier 12 Power and Mechanical 12 Connecto...

Page 82: ...rnal DC Power Source 31 Remote Speaker Mute Control 31 Front Panel Headset Connections 31 Headset Requirements 31 Headset Connections 31 OPERATION 33 General 33 Operating Instructions 33 Momentary Lat...

Page 83: ...gure 10 Features Call Signaling Call signaling is accomplished using an inaudible 20kHz signal to activate a call indicator LED Remote Talk Off Active unattended remote station microphones may be deac...

Page 84: ...ng to suit your particular application Figure 11 shows the available button caps as well as some typical button configurations NOTE The standard buttons are opaque As a result the front panel LEDs may...

Page 85: ...ic headset 4 pin CARBon MIC HEADSET This connector accepts a standard 3 conductor inch phone plug The necessary phantom power is provided to power a carbon microphone or its electronic equivalent Pane...

Page 86: ...325 is in 2 channel mode External Program Input Two 2 inch phone jacks are provided for external program input The station accepts line level balanced input The two 2 program inputs are mixed internal...

Page 87: ...s provided in Operation on page 33 Power The MCE 325 is designed for local powering and is supplied ready for use with either 110 or 220 VAC but not both The unit may also be powered from an external...

Page 88: ...Maximum Voltage Gain 30dB Frequency Response 100Hz to 8 000Hz 3dB Speaker Impedance 8 to 16 Output Power per Amplifier 5W into 8 Output Voltage Level 16Vp p Power and Mechanical Power Requirements 11...

Page 89: ...ter on axis averaged over one 1 octave bands centered at 250Hz 500Hz 1kHz 2kHz 4kHz and 8kHz when enclosed in a sealed box of 1 3 liters volume Frequency Response 200Hz to 10kHz 4dB on 1 10 octave mea...

Page 90: ...Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 4 A 4 channel 2 wire configuration with two 2 channels used for IFB s FIGURE 5 Configuration for one 1 or two 2 2 wire channels and o...

Page 91: ...y Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 7 Multiple interconnected stations in 4 channel 2 wire configuration with two 2 channels used for IFB s FIGURE 8 Multiple interconnected stat...

Page 92: ...sch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 9 A 4 channel 2 wire configuration with two 2 channels used for IFB s shown with TELCO interface FIGURE 10 Configuration for an EN...

Page 93: ...MCE 325 Programmable User Station Description Specifications 17 Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 11 MCE 325 button configurations...

Page 94: ...18 Description Specifications MCE 325 Programmable User Station Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13...

Page 95: ...at the factory If your application requires settings different from the defaults you have to remove the top cover of the unit see Figure 12 on page 20 and make the required changes If you do change t...

Page 96: ...20 Installation MCE 325 Programmable User Station Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 12 Top cover removal...

Page 97: ...CH B output installed On Off DS3 2 channel mode Off a 4 channel mode On a The terms 2 channel and 4 channel mode apply only to 2 wire lines In 2 channel mode each 2 wire line uses two 2 channel select...

Page 98: ...wire CH B output selected pins 1 2 shorted 2 wire operation J16 Assigns mono mix of the PROGRAM A and B inputs to the left headphone Not Assigned Pins 2 3 shorted Assigned Pins 1 2 shorted Assigned J...

Page 99: ...MCE 325 Programmable User Station Installation 23 Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 13 Internal DIP switches jumpers and level trimmers...

Page 100: ...k off feature only This feature is useful when an unattended user station with an activated microphone is introducing unnecessary noise into a line Dip switch DS7 enables disables this feature When re...

Page 101: ...immer Adjustment R37 The headphone sidetone trimmer R37 adjusts the loudness of your own voice heard in your headset when the microphone is on and the speaker is off It does not affect the actual leve...

Page 102: ...26 Installation MCE 325 Programmable User Station Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13 FIGURE 14 Mounting Configurations...

Page 103: ...wired for loop through connection to other intercom stations These connectors are used for connection of 2 wire line to channels one and two full duplex operation or for connections of 4 wire CH A ou...

Page 104: ...15 The PROGRAM A and B inputs accept line level 0dBu nominal balanced audio The program inputs are connected using inch stereo phone plugs External Speaker J27 The SPEAKER OUTPUT jack provides a bridg...

Page 105: ...xpand the IFB functions allowing any one 1 of several MCE 325 user stations to interrupt a single point program source and talk on the interrupted channel For example if one 1 MCE 325 is operating wit...

Page 106: ...t connections are wired in parallel with the front panel dynamic headset connector therefore use only one 1 at a time In the headset connecting cable prevent coupling between the microphone and headph...

Page 107: ...om a remote location Applying a logic low signal to pin 25 of the auxiliary connector causes muting Connect circuit common to pin 11 Front Panel Headset Connections Headset Requirements Use headphones...

Page 108: ...32 Installation MCE 325 Programmable User Station Bosch Security Systems Inc Technical Manual F 01U 193 228 Rev 13...

Page 109: ...he button turns off when released All other buttons are latching only press to activate press to release NOTE The latching action can be disabled through the front panel programming LED Indicators LED...

Page 110: ...transmitted onto the intercom lines but also echoed back into the MCE 325 receive circuits This can result in acoustic feedback when the MCE 325 is used with an external speaker The sidetone nulling t...

Page 111: ...CALL LED turns on to indicate talk off signal ready 2 Momentarily press the talk button for the channel to be deactivated This causes the talk off signal to be transmitted 3 Release the talk button to...

Page 112: ...ector button one 1 or more times to select the desired type of operation as follows Short LED blink 50 on 50 off Button must be pressed to talk or listen default Long LED blink 90 on 10 off Listen is...

Page 113: ...talk button one 1 or more times to select the desired type of operation as follows Short LED blink 50 on 50 off Instant mic off default Long LED blink 90 on 10 off Instant mic on Reset To restore the...

Page 114: ...Bosch Security Systems Inc 12000 Portland Avenue South Burnsville MN 55337 U S A www boschcommunications com...

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