USER GUIDE WIRElESS BEltpack tW401
Contents
1. enabled as described in Sections 3 4 and 3 6 To unlock the keypad press and hold the OK key for 2 seconds until the key symbol Gr disappears N B The keypad is automatically locked each time the belt pack is switched on 2 4 Display Illumination If none of the keys are pressed the blue LCD display will dim after minute to save battery power 2 5 Screen Information The screen displays the belt pack status battery level and various other settings Please see Figures 2 and 3 below Y 1 2 3 9 5 6 LLL 01 Gr01 x i Figure 2 The Main Screen Icons Ceon Besripio O Belt Pack Identifier Number Indicates the belt pack number in the conference group or if it is in listener mode System Status The icon indicates the location of the belt pack in the conference group and the numbers indicate the other belt packs in the same conference A dash over the number indicates the particular belt pack is in listener mode Radio Channel Number Indicates the selected radio channel number Battery Level Provides information on the battery level with 5 levels Volume Control Indicates the headset volume level with 9 levels Group Mode Indicates the parent group of the belt pack Push To Talk Function Indicates the microphone status open or closed Keypad Locked Unlocked N B The power ON OFF function still operates Figure 3 Screen Icon Information Page 3 2 6 First Time Swith On2. 13 Headset Volume To set the headset volume make sure that you are on the main screen and the keyboard is un locked then press and hold the or key for 2 seconds You will hear a beep in the headset There are 9 possible levels indicated by the screen icon 4 Press OK to confirm N B if there is a double beep in the headset it indicates the maximum or minimum level has been reached 3 0 OPERATIONAL FEATURES 3 1 Setting the Side Tone Level Side tone is the amount of mic signal that is fed to the users own headset earphones to give confidence and aid clear speech It can be set at a level that is comfortable for the individual user Procedure From the main screen press and hold the menu key for 2 seconds to access the main menu Press the or keys to access the sub menu Side Tone Press OK to confirm Press the or keys to adjust the side tone level up or down Please see Figure lO Side tone level N Exit menu Figure 10 Side Tone Level Adjustment Press OK to confirm Press amp to return to the main screen 3 2 Setting the Push To talk PTT Mode The belt pack normally operates using hands free open mic communication However it may be necessary in some instances to use the PT T mode where the mic is normally muted and a switch is used to open the mic circuit to talk Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu
3. When switching on for the first time you must validate that you are authorised to use the channel you are going to use Full details are in Section 2 7 Please see Figure 4 below WARNING CE channels Confirm Cancel Refer to Manual for more details Figure 4 Authorisation Screen N B If a channel selection has already been carried out during a previous switch on you simply confirm your choice Select Confirm using the or keys then press OK 2 7 CE and Non CE Channels Up to 10 different channels are stored in the TWV40 1 they have been separated into two distinct groups CE channels Allowed in all countries of the European Community Non CE channels Not authorised for use within the EU These channels are intended for use in some countries outside the European Community N B It is the responsibility of the user to first determine which channel is allowed with the relevant authorities of the country where the system will be used before switching to these channels CE channels CE 869 525 MHz CE 2 864 5 MHz power limited to 10 dBm CE 3 863 5 MHz power limited to 10 dBm Non CE channels Russia 859 5 MHz frequency available for events only in Russia Ukraine 868 3 MHz frequency available for events only in Ukraine SEI 866 5 MHz SE2 864 5 MHz SE3 863 5 MHz SE4 861 5 MHz SE5 860 5 MHz 2 8 Setting the Radio Channel for a Conference Group To communicate the belt packs must be set to the same radio c
4. may be between 2 to 6 belt packs in a conference group with identifier numbers OI to 06 Make sure each device has a unique identifier don t assign several devices with the same identifier as this will prevent communication N B One of the belt packs must be set with identifier number Ol Please see figure 7 Role setting 01 02 03 Select a role or Exit Menu Figure 7 Role Setting Screen Procedure From the main screen press and hold the menu key amp for 2 seconds to access the user menu Press the or keys to access the sub menu Role Setting Press OK to confirm Press the or keys to select the required belt pack ID Press OK to confirm Press amp to return to the main screen 2 11 Enabling a Conference To enable a conference group of belt packs they must communicate and memorise an encryption key transmitted by belt pack 01 This operation is necessary to enable all the belt packs to enter a conference or to add an additional belt pack to a conference that has already been setup N B The devices can only communicate if this procedure known as the encryption process is performed First make sure all belt packs have a unique identifier number and that one has the identifier Ol Procedure From the main screen on belt pack 0l press and hold the menu key user menu Press the or keys to access the sub menu Network Press OK to confirm Press the or keys until the s
5. HEADSETS There are two closed type headsets available Simply plug the required headset into the belt pack and orientate the boom mic close to the mouth to talk There is a MIC CUT switch on the ear cup to turn the mic off if required N B When plugging the headset connector in please ensure the red dot on the barrel of the connector is pointing directly to the rear of the belt pack 5 1 Tecpro SMH214 This is a single muff headset Canford product code 27 214 that is ready terminated with a Fischer 102 Series 7 pin plug The headset incorporates a MIC CUT toggle switch on the outside of the ear cup 5 2 Tecpro DMH224 This is a double muff headset Canford product code 27 224 that is ready terminated with a Fischer 102 Series 7 pin plug The headset incorporates a MIC CUT toggle switch on the outside of the ear cup Page 16 6 0 BATTERIES AND CHARGER 6 Batteries The batteries are Lithium Polymer VARTA EasyPack 3 7V 2600mAh re chargeable types You can re charge the batteries before they are fully discharged The batteries are fully re charged in about 5 hours Battery autonomy is about 6 hours Average consumption is 200mA peak consumption is 600mA N B When a belt pack is stored unused the batteries keep discharging due to a very small current consump tion in the OFF mode Remove the battery from the belt pack when you stop using it and check the bat tery level before re using Only use VARTA Easypack 3 7V 2600mAh batteri
6. Press the or keys to access the sub menu Options Press the or keys to access the sub menu PT T Mute Mic Press OK to confirm Press the or keys to select Activated Please see Figure 1l Inactivated Activated Exit menu Figure 1 PTT Adjustment Press OK to confirm Press amp to return to the main screen Once the PTT Mute Mic mode is activated the 4 icon appears in the home screen i e the mic is normally muted 3 3 Using PTT Mode The PTT key is under the Tecpro logo A momentary press less than sec latches the mic to be either ON or OFF Alternatively if the Tecpro key is pressed down and held the mic circuit will open for the duration of the key press and is muted again when the key is released Please see Figure 12 Ea Means that the PTT mode is enabled and the microphone of your headset is open Eg Means that the PTT mode is enabled and the microphone of your headset is closed Figure 12 PTT Icon 3 4 Quick Channel Setting Fast Channel If several Tecpro Wireless conference groups are used on the same site by using different radio channels then it is possible providing the encryption process is disabled please see section 5 0 to use the Fast Channel feature to switch from one radio channel to another This may be the case for example if a team leader or director needs to move from one conference group to another within a venue N B i This feature can on
7. WIRELESS BELTPACK TW40I by Canford Product Code 27 401 Canford Audio Plc Crowther Road Washington Tyne and Wear NE38 OBW canford co uk 02 127 Issue 5 12 12 11 CONTENTS Section 1 0 Introduction Section 2 0 Basic Operation 2 1 Keypad 2 2 Turning On and Off 2 3 Locking and Unlocking The Keypad 2 4 Display Illumination 2 5 Screen Information 2 6 First Time Switch On 2 CEand Non CE Channels 2 8 Setting the Radio Channel for a Conference Group 2 9 Setting a Conference Group 2 10 Assigning an Identifier Number 2 11 Enabling a Conference 2 12 Using the Listener Only Mode 2 13 Headset Volume Section 3 0 Operational Features 3 Setting the Side Tone Level 3 2 Setting the Push To Talk PTT Mode 3 3 Using PTT Mode 3 4 Quick Channel Setting Fast Channel 3 5 Using Fast Channel Mode 3 6 Quick Volume Setting Fast Volume 3 Using Fast Volume Mode 3 8 Group Selection 3 9 Example of Group Setting Section 4 0 Advanced Settings 4 Using Advanced Settings 4 2 Filter Type 4 3 User Menu Locked Feature 4 4 Disabling The Encryption Setting 4 5 Microphone Gain Settings 4 6 AEC Filter Section 5 0 Headsets 5 Tecpro SMH214 5 2 Tecpro DMH224 Section 6 0 Batteries and Charger 6 1 Batteries 6 2 Charger 6 3 Battery Charger Operation 6 4 LED Indicators 6 5 Battery Charger Specification Section 7 0 Troubleshooting 7 Cannot communicate with other Belt Packs 7 2 The Belt Pack cannot enter a Conference 7 3 The Belt Pack wil
8. agers etc Access to it requires a PIN access code available on request from Tech Support Canford Audio Plc Please be aware that it is possible to prevent the belt packs communicating if the configuration is set incorrectly Tel 44 191 418 1144 Email techsupport canford co uk Page 4 1 4 2 The Advanced Settings menu allows access to the following 4 sub menus i Filter type ii User Menu Locked iii Encryption mode iv Microphone settings v AEC Filter Using Advanced Settings Entry of a PIN code is required Please see Figure 18 Pin Code Enter Ok Exit menu Figure 18 Entering the PIN Code Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK to confirm The belt pack will now prompt you to enter a PIN code Enter the value of each digit using the and keys Moving to the next digit is done by briefly pressing the ON OFF key Once the full PIN code has been entered press OK Filter Type Depending on the environment and the individual users preference the filter can be changed Please see Figures 19 and 20 for the current choices available Filter Type Applications Designation Figure 19 Filter Settings Table Page 2 Filter setting Sport Other No Filter Select a filter Exit menu Figure 20 Filter Settings Screen Procedu
9. d on off switch Tecpro SMH214 Single muff headset Tecpro DMH224 Dual muff headset Tecpro Spare 2600mAh rechargeable battery Tecpro Spare belt clip for TW401 Tecpro TVV415 Battery charger 3 way complete with power supply Tecpro TVV416 Battery charger 3 way extension unit for TW415 Tecpro TW417 Battery charger spare power supply for TW415 Additional accessories will be made available as they are developed 9 0 TECHNICAL SPECIFICATIONS 27 401 TW401 Wireless Belt pack 9 1 Harmonised Standards Radio EN300 220 EMC EN301 489 CEO 869 525 MHz CEO2 864 500 MHz CE03 863 500 MHz Frequencies Modulation GFSK Data rate 115 kbits sec air rate RF Power 200mW erp maximum depending on channel selected Useable distance 300 to 400m maximum depending on the environment Duty Cycle 076 Conference Group Up to 6 personnel Listen Only Unlimited number of listeners Protection Class IP54 rated Dimensions 60 w X 22 d X 120 h mm Weight 80g 9 2 27 214 SMH214 Single muff closed headset Impedance 35 ohm Microphone Electret mic 2 10V DC 9 3 27 224 DMH224 Dual muff closed headset Impedance 2 X 35 ohm Microphone Electret mic 2 10V DC Page 19
10. es Use of another battery or charger may present a risk of fire explosion leakage or other hazard After use the batteries should be disposed of in an appropriate recycling centre They should not be disposed of into the environment Do not short circuit the contacts Do not open the batteries Do not expose the batteries to temperatures above 100 C 6 2 Charger The charger is used for re charging the batteries of the Canford Tecpro TW401 wireless belt pack system Each charger can simultaneously re charge up to 3 batteries This charger must only be used with VARTA Easypack Lithium Polymer 3 7V re chargeable batteries If the charger is used with any other battery it could cause that battery to explode This charger has been designed for indoor use The surrounding temperature when re charging should be between 5 C and 45 C If the temperature is not within this range re charging is suspended until the correct temperature has been reached Don t use any other power supply for the charger than the external AC DC converter unit provided with the product Place the charger on any flat surface 6 3 Battery Charger Operation Connect the power supply unit to the socket found on the side of the case Connect the power supply unit to a mains supply When plugged in the 3 status LEDs at the front of the charger will first turn AMBER then they will turn off one after another and finally simultaneously flash GREEN Place the batteries i
11. hannel number The primary channel is CE however alternative channels CE 2 and CE 3 are also available Procedure From the main screen press and hold the Menu key amp for 2 seconds to access the user menu Use the or keys to access the sub menu Channel Press OK to confirm In the Channel sub menu select the appropriate group CE or Non CE by using the or keys Please see Figure 5 Chan settings CE channels Non CE channels Figure 5 Channel Group Selection Press OK then confirm your choice by pressing OK again or select Cancel by using the or keys to choose another group Select the channel by using the or keys Please see Figure 6 Chan settings CE1 CE 2 CE 3 Select a channel Exit Menu Figure 6 Channel Group Selection Press OK to confirm Press to return to the main screen I 2 9 Setting a Conference Group To set up a conference group each belt pack needs to be configured as follows i Assign an identifier number to each belt pack that will take part in the conference ii Enable the belt packs to enter the conference N B Once these parameters are stored in the memory they will remain the same even if the belt pack is switched off or the battery removed 2 10 Assigning an Indentifier Number To set up a conference group first decide the number of belt packs that will take part in the conference and assign a unique number to each of them There
12. istance apart from each other and it s not practical to bring them back together again for encryption and the introduction of additional belt packs If encryption is disabled then simply an available ID needs to be chosen and the same radio channel as the existing conference used Please see figure 22 Encryption Inactivated Activated Exit menu Figure 22 Encryption Activation Screen Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK to confirm Press the and keys in the sub menu User Encryption Mode Press OK to confirm Press the or keys to select Inactivated Press OK to confirm Press to return to the main screen N B If the encryption procedure is disabled you cannot ensure the security or confidentiality of your communications 4 5 Microphone Gain Settings The belt pack has an embedded AGC on the microphone circuit that allows the use of many types of headsets However it is possible to manually set both the DC polarisation and gain of the micro phone in manual mode Polarisation settings OR 680R 2 7k 5 4k Gain values OdB 2dB 24dB Please see figures 23 24 and 25 Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK t
13. l not switch on 7 4 Communication Inteference 7 5 Crackling Noises 7 6 Echo Sounds 7 The keys are not working properly Section 8 0 Accessories Section 8 0 Technical Specifications 9 27 401 TW401 Wireless Belt Pack 9 2 27 214 SMH214 Single Muff Closed Headset 9 3 27 224 DMH224 Dual Muff Closed Headset 1 0 INTRODUCTION The Tecpro TW40I MkII wireless belt pack system can be used to establish a full duplex wireless conference group of up to 6 personnel The group can simultaneously talk and listen to all the other users within the same group In addition an un limited number of listener only belt packs can be added to the system useful for personnel who only need to monitor conversation within the group The system operates primarily on an EU licence exempt UHF frequency of 869 525 MHz with two alternative EU licence exempt frequencies provided within the 863 865 MHz band Encrypted digital transmission technology is used for secure communication Additional non EU frequencies are available for use in many countries worldwide Approximate operational coverage is 300 400m depending on the environment and the frequency selected Please see the full specifications in Section 9 0 Major applications are in the theatre conference live performance and broadcast markets though new applications are constantly emerging Please note that the latest Mk II versions are not backwards compatible with the previous Mk versions because a differe
14. ly be used on CE channels not Non CE channels ii Do not assign the ID OI to a belt pack that will then subsequently change radio channels as this will disrupt communication between the remaining members of that conference group Each conference group must retain a belt pack on ID OI to enable continuous group communication Please see figure 13 Fast mode None Fast volume Fast channel Exit menu Figure 13 Fast Channel Adjustment Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Fast Mode Press OK to confirm Press the or keys to select Fast Channel Please see Figure 12 Press OK to confirm Press to return to the main screen 3 5 Using Fast Channel Mode The use of Fast Channel can now be done directly via the or keys Procedure A short press of less than sec on the or keys will allow direct access to the channel choice Then select CE 0l Ce 02 or CE 03 using the or keys Press OK to confirm N B It is only possible to activate one fast mode at a time Fast Channel mode cannot be activated at the same time as the Fast Volume mode To stop the Fast Channel mode go back to the dedicated Fast Mode menu and choose the option None 3 6 Quick Volume Setting Fast Volume Normally access to the volume control is done by unlocking the keypad see section 2 3 and then pre
15. n Groo Gri Gr02 Save Ok Exit menu Figure 15 Group Selection Screen Page 10 Procedure From the main screen momentarily press the menu key Group Selection screen Press the or keys to select the required group Press OK to confirm less than a second to access the hears and is heard from all groups hears all groups but is only heard by Gr01 Gr00 and Gr04 hears Gr02 and Gr00 and is only heard by Gr02 GrOI and Gr04 hears Gr03 and Gr00 and is only heard by Gr03 Gr00 Gr0I and Gr04 Figure l6 Group Table Showing The Available Combinations Figure 17 Schematic Showing Available Combinations 3 9 Example of Group Setting Consider a director in overall charge of a stage production that could consist of a lighting crew and a sound crew The director would be in GrOO the lighting crew in Gr02 and the sound crew in Gr03 In this scenario group Gr02 and Gr03 can work independently of each other only communicating with fellow members of their respective groups without disturbing the other group The director has the ability to fully communicate with both groups but he can also choose to communicate with either Gr02 or Gr03 privately to discuss an operational requirement with the respective group To do this he would simply switch his belt pack to group Gr02 or Gr03 4 0 ADVANCED SETTINGS N B The following menu would only normally made available to certain types of users Technical Man
16. n the charger gold contact side down When the battery has been detected the corresponding LED turns RED If the LED does not turn RED please check that the battery has been correctly positioned gold contact side down at the back of the compartment Charging duration is approximately 5 hours for a 2600 mAh battery Once the battery is fully charged the corresponding LED turns GREEN N B A battery can be left in the charger even after it has been completely charged 6 4 LED Indicators Steady RED Charging Steady GREEN Battery charged Flashing RED Battery defect charge has stopped replace the battery Flashing GREEN No battery installed Flashing GREEN and RED alternating Battery temperature is outside the authorised range charging is suspended until the correct temperature has been reached Flashing ORANGE Unrecognised battery check the battery type Page 7 6 5 Battery Charger Specification AC DC power unit electrical supply 100 240V AC 1 5A 50 to 60Hz Operating Temperature 5 C to 45 C Charge duration 5 hours 2600 mAh battery Battery lifetime gt 500 charge cycles 7 0 TROUBLESHOOTING Below is a list of typical problems that may occur 7 1 7 2 7 3 7 4 7 5 7 6 7 7 Cannot Communicate With Other Belt Packs Check all belt packs are using the same radio channel number Check that one belt pack is identified with the number OI and that a conference group has been created N B Do no
17. nt coding system is used 2 0 BASIC OPERATION There are 5 front panel keys that enable the selection and viewing of the various menu functions and their options Please see Figure below Keys Description y p Start Stop Power ON OFF The menu key allows access to the configuration menu of the belt pack Also allows direct access to group selection Allows direct access to volume control or channel selection In the setup menu of the belt pack these keys adjust various parameters Allows locking unlocking of the keypad In the setup menu of the belt pack this button also allows you to accept the selected option or exit the device configuration Allows opening closing of the microphone when Push To Mute is enabled Figure Key Functions 2 1 Keypad The wireless belt pack keypad is a touch sensitive type 2 2 Turning On and Off Insert a charged battery into the rear compartment on the wireless belt pack Ensure the battery is inserted correctly To turn the belt pack on press and hold the ON OFF key for 2 seconds To turn the belt pack off press and hold the D ON OFF key for 2 seconds 2 3 Locking and Unlocking the Keypad Press and hold the OK key for 2 seconds until the key symbol G appears on the screen The keypad buttons are now locked to prevent accidental operation except the ON OFF key operation as described in Section 2 2 and the and keys when the functions Fast Volume or Fast Channel are
18. o confirm Press the and keys in the sub menu Micro Settings Press OK to confirm Press the or keys to select Manual Press OK to confirm Select the required Polarisation value and press OK to confirm Select the required Gain value and press OK to confirm Press to return to the main screen Page 14 Micro settings Auto Manual Exit menu Figure 23 Micro Settings Screen Mic Polarization 680R 2K7 5K4 Exit menu Figure 24 Mic Polarisation Screen Mic gain OdB 12 dB 24 dB Exit menu Figure 25 Mic Gain Screen 4 6 AEC Filter The acoustic echo cancellation or AEC function helps minimise the echo phenomenon associated with the acoustic pickup of an adjacent users mic to be reduced and so enables the operation of numerous types of headsets and earphones with a microphone to be optimised Levels AEC OFF AEC AEC 2 and AEC 3 are available Procedure From the main screen press and hold the menu key 2 for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK to confirm Press the and keys in the sub menu AEC Press OK to confirm Press the or keys to set the desired level of AEC Press OK to confirm Select the required Polarisation value and press OK to confirm Select the required Gain value and press OK to confirm Press to return to the main screen Page I5 5 0
19. re From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK to confirm Press the and keys in the sub menu to select the required filter i e Genericf Press OK to confirm Press to return to the main screen 4 3 User Menu Locked Feature This feature allows you to lock access to the main menu if you do not want users to change the settings of the belt packs Please see figure 21 N B If this feature is enabled access to the main menu will only be authorised by inserting the PIN code User menu locked Inactivated Activated Exit menu Figure 21 User Menu Locked Screen Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the sub menu Adv Settings Press OK to confirm Press the and keys in the sub menu User Menu Locked Press OK to confirm Press the or keys to select Activated Press OK to confirm Press E to return to the main screen Page 13 4 4 Disabling the Encryption Setting In some instances it may be desirable to disable the encryption procedure For example when adding new belt packs into a conference group but without having to go through the encryption procedure as described in section 2 1 I Typically this would be where the different belt packs are located a long d
20. ssing the or keys The Fast volume mode overcomes this procedure by allowing immediate access to volume control setting Please see figure 14 Fast mode None Fast volume Fast channel Exit menu Figure 14 Fast Volume Adjustment Procedure From the main screen press and hold the menu key for 2 seconds to access the user menu Press the or keys to access the Fast Mode menu Press OK to confirm In the Fast Mode menu press the or keys to select the sub menu Fast Volume Press OK to confirm Press to return to the main screen 3 7 Using Fast Volume Mode The use of Fast volume is now done by direct access using the or keys N B It is only possible to activate one fast mode at a time Fast Volume mode cannot be activated at the same time as the Fast Channel mode To stop the Fast Volume mode go back to the dedicated Fast Mode menu and choose the option None 3 8 Group Selection The group function allows you to determine which group a belt pack belongs to Up to 8 different groups can be created Each group has its own rules listening and or speaking within the network Please see figure 15 The function allows a maximum of 6 belt packs in full duplex mode per group and an un limited numbers of belt packs in listener mode N B The group function is directly accessible via the keyboard it does not have to be enabled or disabled via the menu Please see figure 15 Group Selectio
21. t assign the same identifier number to several belt packs The Belt Pack Cannot Enter A Conference Check all belt packs are using the same radio channel number Make sure all the belt packs have been encrypted to enter the conference especially if an extra belt pack has been added to an existing conference The Belt Pack Will Not Switch On Check that the battery is charged and correctly inserted the right way round Communication Interference Another conference system may be in use close to yours Use the primary CE OI radio channel or switch to the alternative channels CE 02 or CE 03 Make sure there is no contact between the belt pack antenna and the headset cable Crackling Noises The microphone of one of the belt packs is probably damaged Replace the headset or re terminate the connector Echo Sounds Check there is at least 10m between the belt packs to prevent your voice being picked up on another headset boom mic The Keys Are Not Working Properly Press the keys in the centre Some functions require a key to be pressed and held for 3 seconds Avoid pressing more than one key simultaneously Page 18 8 0 ACCESSORIES 27 40 27 403 27 405 27 406 27 407 27 214 27 224 27 408 27 409 27 415 27 416 27 417 Tecpro TW40 wireless belt pack Tecpro TVV403 wireless interface Tecpro TVV405 Battery charger 5 way Tecpro TVV406 Lightweight earpiece with boom mic Tecpro TVV407 Lightweight earpiece with boom mic an
22. ub menu Start appears Please see Figures 8 and 9 Press OK to confirm for 2 seconds to access the Network encryption Exit Start Figure 8 Network Encryption Network encryption In progress Please wait Exit menu Figure 9 Network Encryption in Progress Belt pack Ol is now transmitting an an encryption key signal and displays the message Sending key Please wait until process has succeeded Then on all the other belt packs in the conference group follow the same procedure and SUCCEEDED will appear on the other screens Then press OK to confirm on all the other belt packs in the conference group Finally when all the belt packs have been enabled into the conference group press OK on belt pack 0l to end the procedure 2 12 Using The Listener Only Mode A belt pack can be used as a listener only In the listener only mode the belt pack can only hear other belt packs in the conference but it cannot talk as well N B The listener only mode can only work if the belt pack has been encrypted first and also if at least 2 belt packs 01 and another are in the conference first Procedure From the main screen press and hold the menu key amp for 2 seconds to access the user menu Press the or keys to access the sub menu Role Press OK to confirm Press the or keys to select listener from the list Press OK to confirm Press to return to the main screen 2
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