Laboratory2 SOROKA-18E, Operational Manual

Page 1: ...Laboratory2 LTD Page1 Version of 21 12 2020 SOROKA 18E DIGITAL VOICE RECORDER OPERATIONAL MANUAL ...

Page 2: ...rder 7 2 VOICE RECORDER USAGE 8 2 1 Operating limitations 8 2 2 Preparation of voice recorder for usage 8 2 3 Rechargeable battery charging 8 2 4 Setting voice recorder parameters 9 2 5 Usage of the voice recorder 9 2 6 Creating a configuration file 9 2 7 Verification of files digital signatures 12 2 8 External microphone connection 14 3 SYSTEM OF VOICE RECORDER LABELS 15 4 LOGGER 15 5 CURRENT REP...

Page 3: ...tenance necessary for the correct operation and full use of technical capabilities of a dictophone of SOROKA 17Е Fig 1 Delivery set of voice recorder Soroka 18E Table 1 List of items supplied Name The number Option 18E 1 Voice recorder Soroka 18 1 2 Memory card microSDHC 1 32GB 3 The adapter for accumulator charging 1 4 Passport 1 5 USB cable to charge the recorder 1 6 Packaging 1 7 CardReader 1 ...

Page 4: ...via micro SD card 6 Charger type Cable USB micro USB 7 Discretization of sound frequency 8 kHz 16 kHz 24 kHz 32 kHz 8 Resolution 8 bit u law 16 bit 20 bit 9 Microphone Sensitivity 26 dBFS at 94 dB SPL 8 9 meters 10 Non Linear Distortion Ratio less than 3 11 Frequency range as per level 3 dB Sample rate 8 kHz 3 Hz 3 384 kHz 16 kHz 3 Hz 6 768 kHz 24 kHz 3 Hz 10 152 kHz 32 kHz 3 Hz 13 536 kHz 12 Dura...

Page 5: ...ode 23 Ability to manually control the recording level Yes only under 16 bit resolution and compression u law from 12 dB to 18 dB in 6 dB 24 Automatic sound level adjusting Yes only under 16 bit resolution and compression u law from 12 dB to 18 dB in 6 dB 25 Logger Yes 26 System of records tags in files Tags at first and to the end of files tags on pressing of the button tags on operation of an ak...

Page 6: ...e A further indication is possible only by pressing a button b Mono recording mode after a brief pressing of control button 1 If the battery voltage is normal the indicator repeatedly blinks green internal microphone orange external microphone 2 If the battery is low the LED blinks several times in red c Recording mode with voice operated switch VOX after a brief pressing of a button After detecti...

Page 7: ...arge a The end of the charge of the rechargeable battery Indicator Charge lights green b Charge of the rechargeable battery indicator Charge lights red 1 4 Design and operation of the voice recorder The appearance of the voice recorder Soroka 18E is shown in Figure 2 Fig 2 Appearance of voice recorder Soroka 18E The adapter for connection of the charger Мemory card Operating mode indicator Inclusi...

Page 8: ...ing to use the voice re corder Before starting to use the voice recorder it is necessary to carry out an external inspec tion for mechanical damage On the surface there should be no cracks chips dents Metal parts should not have any traces of corrosion Before the work it is necessary to configure the voice recorder parameters according to chapter 2 4 of this document Check the recording length of ...

Page 9: ... the user at the last setting To display the voice recorder current status briefly press the control button The cur rent state is determined according to the indications on the table 3 To switch the recorder off press the control button and hold it down till the mode indi cator stops flashing or goes out indicator must either begin to turn solid green or goes off Moreover if the operation has been...

Page 10: ...ser can adjust a threshold of voice operated switch by setting of value in the Sensitivity of VOX window The higher the chosen sen sitivity the by more quiet sounds are recognized by recorder The recommended sensitivity value is average Under sound resolution of 20 bits sensitivity of VOX is a fixed value and is not adjustable d To switch on off the automatic adjustment of record level After activ...

Page 11: ...compression allows to significantly increase record duration and by two tree times decrease memory consumption on the microSD card in comparison with the record modes in a format 16 20 bits without compression i Switching on off logger When logger is switched on all main events will be saved into internal memory of voice recorder with their time and date There is also stored voice record er produc...

Page 12: ...corder will switch off and expect activation of the following alarm clock Alarm clocks work in strict sequence from the first to the tenth The voice recorder will be switched off automatically after the last alarm clock activation l Writing down the configuration file After adjustment of the required configuration press the Save configuration file button The program will create new or will rewrite...

Page 13: ...igital signature b Indicator of the progress digital signature calculation c Button Start Stop File digital signature checking runs by pressing the Start button By pressing Stop button the checking process stops At the end of the file checking the program will show the message The digital signature is valid if the integrity is not violated If the file contains errors the program displays the messa...

Page 14: ...is named FL_8 WAV the file with information about the labels will have the name FL_8 TXT The generated file with information on labels is automatically stored in the directory of the originally scanned file or directory in which to save the file see 2 7 b File with information on labels can be useful when listening to audio in programs that do not have label recognition Fig 6 The file structure wi...

Page 15: ...me when it detects an audio signal actuation of the voice activation mode Analysis of the tags may be formed for example using Sound Forge version 6 0 or higher or using software supplied dict exe Section 2 7 Fig 7 Example of automatic tags recognition by the Sound Forge program in audio files of voice recorder The name of each label corresponds to the date and time of its creation 4 Logger Logger...

Page 16: ...WDT_PSWRD_VIOLATION For official purposes FLASH_PSWRD_VIOL For official purposes PLL_UNLOCK For official purposes PERF_AREA_FETCH For official purposes PMM_PSWRD_RESET Forced software reset occurs when overwriting voice recorder microprocessor program Is called forcibly LOW_VOLTAGE_TURN_OFF Low Battery The recorder is turned off BUTTON_TURN_OFF Voice Recorder is turned off by pressing BUTTON_TURN_...

Page 17: ... repair works are needed Current repair of the voice recorder should be made at the factory or in the workshop Attention Unauthorized opening of the voice recorder leads to the withdrawing of the war ranty from the voice recorder 5 2 Typical faults Typical faults of the voice recorder which may be eliminated by the user are shown in Table 6 Table 6 Typical faults of the voice recorder and their so...

Page 18: ...the voice recorder in premises with air temperature over 25 C 7 Manufacturer s warranty 7 1 The manufacturer guarantees the accordance of the voice recorders to the technical requirements providing that the customer observe instructions for operating conditions transportation and storage set up by this manual 7 2 The warranty period is 12 months within the warranty period of storage 7 3 The warran...