Laboratory2 SOROKA-06E User manual

Laboratory 2,LTD
Version of 12.05.2020 Page 1
DIGITAL VOICE RECORDER MEMS
"SOROKA-06E"
Manual

Laboratory 2,LTD
Version of 12.05.2020 Page 2
CONTENTS
1. Product specification and description of the voice recorder...................................................... 4
1.1 Voice recorder "SOROKA-06E". ................................................................................................... 4
1.2 Basic specifications of voice recorder. ....................................................................................... 4
1.3 Light indication of operation modes and accumulator charging mode................................... 5
1.4 Design and operation of the voice recorder................................................................................ 6
2. Usage and setting up the voice recorder....................................................................................... 6
2.1 Operating limitations. .................................................................................................................... 6
2.2 Charging the internal accumulator............................................................................................... 7
2.3 Charging the external accumulator.............................................................................................. 7
2.4 Setting parameters of the voice recorder.................................................................................... 7
2.5 Usage of the voice recorder.......................................................................................................... 8
2.6 Selection of operation from the external microphones and mono / stereo recording mode. 8
2.7 Creating a configuration file of the voice recorder..................................................................... 9
3. The system of tags of the voice recorder "soroka-06E."........................................................... 13
4. Description of items for external power of voice recorder........................................................ 14
4.1 Power cable................................................................................................................................... 14
4.2 External accumulator................................................................................................................... 14
5. Logger. ............................................................................................................................................ 15
6. Current repair of the voice recorder............................................................................................. 16
7. Storage and transportation........................................................................................................... 16
8. Manufacturer’s warranty................................................................................................................ 17

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Operation Manual contains information on specifications, the device and the operating prin-
ciples, the rules of storage, instructions for use and maintenance, necessary for the proper
operation and full usage of the technical capabilities of the voice recorder "SOROKA-06E".
Fig. 1. Scopes of delivery of the voice recorder "SOROKA-06E":
Table 1. List of items supplied
Name
Number
SOROKA-06E
Voice Recorder "SOROKA-06E"
1
+
USB Cable to charge the internal accumulator
1
+
AC adapter with USB output
1
+
The adapter to charge the external battery
1
+
External power cable with a built-in stabilizer
(Uinp = 5..28V)
1
+
External Accumulator
1
1.8 Ah
Cable with one external microphone
1
+
Cable with two external microphones (stereo)
1
+
Memory Card micro SD / SDHC
1
32 GB
Card Reader
1
+
Passport
1
+
Package
1
+

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1. Product specification and description of the voice recorder
1.1 Voice Recorder "SOROKA-06E" is designed to record audio signals with the built-in
or external digital MEMS microphones in the mono / stereo modes to the memory card mi-
croSD or microSDHC Class4 or higher.
1.2 Basic specifications of voice recorder are shown in Table 2.
Table 2. Specifications of voice recorder "SOROKA- 06E".
№
Parameter
Description
1
Dimensions, mm
45х24х8.5
2
Operating temperature range
-20°С to +40°С
3
Recording file format
«WAV»
4
Memory type
removable memory card microSD/SDHC
5
PC interface
via microSD card
6
Type of the charger
from the USB port
7
Discretization of sound frequency
8 kHz and 16 kHz
8
Sound resolution
16-bit / 8-bit u-law
9
Microphone Sensitivity
-26 dBFS at 94 dB SPL (8-9 meters)
10
Sound / Noise ratio
of 64 dB
11
Non-Linear Distortion Ratio
less than 3%
12
Frequency range as per
level -3 dB.
Discretization frequency
8 kHz
50 Hz - 3.5 kHz
16 kHz
100 kHz - 7 kHz
13
Length of operation
from internal accumu-
lator ( Kingmax
memory card 16 GB
10 cl)
The frequency of dis-
cretization
Typical operating time
(hours)
Not less than * (hours)
Mono
Stereo
Mono
Stereo
8 kHz / 16-bit
42
21
25
13
16 kHz / 16-bit
25
13
15
8
8 kHz / 8 bit u-law
52
26
31
16
16 kHz / 8 bit u-law
31
16
19
10
14
Length of continuous recording with an external
accumulator 1.8 A h, 8 kHz, 8 bit
Up to 670 hours (28 days)
15
Function of real-time clock
Yes
16
Function of work as an alarm clock
Yes (up to 10 alarms or daily cyclical alarm)
17
File encryption function
Yes
18
The digital signature of files function
Yes
19
Mode of voice operated switch (VOX)
Yes (three levels of sensitivity and record labels while
voice activation)
20
Ability to manually control the recording level
Yes; -12 dB to +18 dB with step 6 dB.
21
Mode of automatic recording level control
Yes; -12 dB to +18 dB with step 6 dB.
22
Logger
Yes
23
The possibility of connecting external mono / ste-
reo microphones
Yes
24
The possibility to connect an external power supply
Yes
25
The system of recording tags in the files
Tags for beginning and end of the file; tags by press-
ing; tags for actuating the voice activation.
* Minimum time of operation of the voice recorder due to loss of accumulator capacity by
40% in the aging process, or at low temperatures.

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1.3 Light indication of operation modes and accumulator charging mode
Light indication of operating modes and emergencies of the voice recorder, see Table 3.
Table 3. Light indication of modes and emergencies.
Modes and emergency situations of the
voice recorder
Status Indicator "Mode"
a) Getting Started (turning on of
the voice recorder by user - pressing the
button for more than 4 seconds)
1. In normal recording mode, indicator turns green and stays until the end
of the process of opening the file (duration of opening the file depends on
the size of opened files and free space on the map). After opening the file,
indicator "Mode" repeatedly flashes green when recording from the internal
microphone or orange when recording from external microphone micro-
phones. If the accumulator is depleted LED "Mode" flashes red. Further
indication is only possible by pressing a button.
2. If on the memory card, file "dict.ini" is recorded, and it is tasked for the
alarm clocks, the indicator lights up for 1 second green and the voice re-
corder enters standby mode by switching on alarm clocks. A further indica-
tion is only possible by briefly pressing the button.
3. If the recorder is configured for voice activation mode, the indicator
lights up for one second green and then lights up for one second orange.
Further indication is only possible by only briefly pressing the button (after
opening the file).
b) Recording mode from the inter-
nal microphone (after the brief pressing
of control button)
1. If the accumulator voltage is normal, the indicator flashes green 8 times.
2. If the accumulator is low, the indicator flashes 8 times red.
c) Recording mode from external
microphones / microphone (after brief
pressing control button)
1. If the accumulator voltage is normal, the indicator flashes orange 8
times.
2. If the accumulator is low, the indicator flashes 8 times red.
d) Recording mode with voice oper-
ated switch (VOX) (after brief pressing
of a button)
After detecting the audio signal of the preset level, similar to normal mode.
Before detection of the audio signal, indicator flashes twice in orange.
e) Mode to record audio signal as
per an alarm clock (after brief pressing of
the button)
The indicator flashes several times alternately red and green, regardless of
other recording modes and accumulator status.
f) Standby mode for alarm clocks
(after briefly pressing the control but-
ton)
After brief pressing the button, triple-time winking red and green of indi-
cator will happen.
g) Emergency - incorrect filing sys-
tem, the lack of a memory card or fault-
of memory card
After turning on of the voice recorder's LED is green, and then it lights up
red, then the voice recorder turns off .
h) Status of "No free space on the
disk"
Indicator after turning the voice recorder on continuously glows green for
some time (depending on the size of the micro SD and size of files), then
the voice recorder turns off.

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Light indication of charging modes of the internal accumulator is shown in Table 4.
Table 4. Light indication modes of the internal accumulator of the voice recorder.
Charging modes
Indicator Status "Charge"
a) the end of the charge of the internal accumulator
Indicator "Charge" lights green
b) the charge of the internal accumulator
indicator "Charge" lights red
Light indication of the charger during charging external battery is shown in Table 5.
Table 5. Light indication mode charge the external battery
Charging mode
Status Indicator "Charge"
с) End-of charge.
The indicator is green
d) The battery charge
Indicator lights red
1.4 Design and operation of the voice recorder.
Outlook of the voice recorder "SOROKA-06E" is shown in Figure 2.
Fig. 2. The outlook of the voice recorder "SOROKA-06E."
2. Usage and setting up the voice recorder
2.1 Operating limitations.
To avoid the voice recorder failure, observe the following rules:
a) The built-in / external accumulator of the voice recorder should be carried out only
with the help of equipment supplied;
Internal microphone
Indicator “Mode”
Indicator “Charge”
Control button
Memory card
microSD
Connector for charging accumulator
and using external power supply
Connector for external micro-
phones

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b) Protect the voice recorder and external microphones from mechanical shocks –
severe bumps may lead to possible destruction of the microphone. If the voice recorder,
received mechanical damage during operation, and this led to its failure, it is not covered
under warranty any more.
c) Do not allow dust and moisture on the microphones, as it can lead to significant
deterioration in the performance of the microphone.
2.2 Charging the internal accumulator.
Connect the USB cable for charge to the voice recorder and then plug it into the USB
port of your computer.
If the accumulator of the voice recorder is discharged, the indicator "Charge" lights up
in red. Once fully charged, the accumulator indicator "Charge" will turn green. The charging
time of a fully discharged battery is approximately 2-3 hours.
Attention! If you want to keep the recorder for storage for over than 1 month,
completely charge.
2.3 Charging the external accumulator
Connect the supplied charger to the accumulator, and then plug it into the mains supply
220V.
If the accumulator is discharged, the indicator on the charger will light up red. Once fully
charged, the accumulator charge indicator lights up in green. The charging time of a fully
discharged accumulator with capacity of 1 A.h. is about 2 hours.
Attention! If you want to keep the recorder for storage for over than 1 month,
completely charge.
2.4 Setting parameters of the voice recorder.
Insert the micro SD card into the card reader. Format the micro SD under the file system
FAT32.
Create a folder with any name on your computer.
Copy the dict.exe program from the supplied CD disk into the created directory.

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Run dict.exe program into the created directory and follow chapter 2.7 of this docu-
ment, create a configuration file named dict.ini.
Write down the created file dict.ini to the memory card.
Insert the memory card into the voice recorder and switch it on. The voice recorder will
read configuration file and save it to the internal memory. After reading the settings from the
file, the voice recorder will automatically remove it and continue to work in a user-
defined mode (indication as shown in Table 3).
2.5 Usage of the voice recorder.
Insert the formatted under FAT32 micro SD card into the voice recorder.
Turn on the voice recorder by pressing the control button for 4 seconds. After turning on,
the voice recorder enters the operating mode which has been set by the user at the last setting
(c.2.4).
To display the current status of the voice recorder, briefly press the control button. The
current state is determined according to the indications on the table. 3.
To switch off the recorder, press the control button and hold it down till the mode
indicator stops flashing and goes out (indicator must either begin to turn solid green, or goes
off). Moreover, if the operation has been set for the alarm clock, the operation of all alarms is
canceled.
After switching off the voice recorder, remove the memory card from it and insert it into
a card reader. To decode the recorded files and verify their digital signatures, use the tab
"Decoding and verifying files integrity" of the program dict.exe. When using program,
please, read c. 2.8 of this document.
To listen to the audio files produced, use any player that supports "WAV" format
(recommended is SOUND FORGE version 6.0 and above).
To use the external accumulator or power supply, simply connect the supplied
accumulator or power cable to the voice recorder and turn it on. The power cord must be
firstly connected to the external power supply voltage of 5 ... 28 V.
2.6 Selection of operation from the external microphones and mono / stereo recording
mode.
To record sound using the external microphone / microphones, it is necessary to connect
them to the voice recorder's connector before you start (see. Fig. 3). After turning on, the

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voice recorder will automatically detect the connected microphones and their quantity. With-
out connected microphones, the voice recorder will start operation from the built-in micro-
phone.
a)
b)
Fig. 3. Operation of the voice recorder) in stereo mode; b) in mono mode with wired
microphone;
2.7 Creating a configuration file of the voice recorder.
Run dict.exe program and select in the opened window tab "Setting the voice recorder",
as shown in Fig. 4. This tab is used to create / read configuration files dict.ini and contains
the following parameters and options:
a) Enable / disable voice activation of the voice recorder. When you activate this
mode, the voice recorder starts recording when the audio level exceeds a certain threshold. If
the sound level is below the threshold for 15 seconds, the voice recorder stops recording and
goes into standby mode of the sound. Closing of the current file does not happen. Fragments
of the audio recording in VOX mode are sequentially written to the current file (up to 70
fragments in one file). For each voice activation, response file will be generated with label,
indicating the date and time of response acoustic start (Fragment starting point) (see the n. 3).
Fragments of recording with voice activation start in the current file will be separated either
by absolute silence, or by beep (p. 2.7 (b)).
b) Hooter between fragments. While the voice activation mode, the user can select
the method of separation of fragments of the audio recording in the current file. In case of
flag "Beep between fragments" all the fragments of the audio recording in the current file
will be separated by beeps, or by absolute silence. The usage of beeps between the fragments
of the recording allows the user to determine the start of the new track while listening to the
recorded files.

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c) The sensitivity of the voice activation. The user can adjust the threshold of
acoustic start by selecting a value in the window "Voice activation sensitivity". The higher
the sensitivity, the more quiet sounds will be triggered by voice activation. The
recommended value of the sensitivity is - the "average".
d) Enable / disable the automatic adjustment of the volume level. After activating
this function, loud sounds will be attenuated and quiet, on the contrary, increase. That will
automatically align the level of by-writes of an audio signal.
e) Setting of the fixed gain level of the sound. If the user or the program itself turned
off automatic adjustment of the recording level, you must specify strengthening out of
existing series. Recommended values are 0 dB, 6 dB and 12 dB.
f) Specify the size of the recorded files. In this window, the user must select the size
of the files being recorded on the card from the following series: 50 MB, 100 MB, 250 MB,
500 MB, 1000 MB, 1800 MB.
g) The choice of the discretization frequency. Possible values are 8 kHz and 16 kHz.
The higher the discretization frequency rate of the sound, the higher the quality of files being
recorded, but the battery life of the voice recorder goes shorter.

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Fig. 4. Tab "Setting the voice recorder" of program dict.exe.
h) Sound Resolution. The recorder can record in either a 16-bit per sample without
compression or in format 8 bits per sample using the compression u-law. Using
compression u-law can significantly (up 30%), increase duration of the voice recorder
operation and requires half of memory size on microSD card in comparison with recording
mode in format 16 bit uncompressed.
i) Turn on / off logger of the voice recorder. When logger of the voice recorder is
switched on, all the main events will be recorded in the internal memory of the voice
recorder, as well as their time and date. Besides, in logger stores data on manufacturing of the
voice recorder (identification number and internal software number). When you turn off the
voice recorder, normally last 48 events will be copied to the memory of the microcontroller
on the microSD to file INF_REG.TXT. For more information about logger, see. In c. 5.
j
l
k
a
b
c
d
e
f
g
h
i
m

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j) Setting the current time and date. In order to change the date and time in the
filing system of the voice recorder, select "Set real-time clock". To use the current system
time, leave the flag "System Time" set. To set the date and time manually, this flag should be
removed and required parameters entered manually.
k) Turn on / off operation by timers. In order that the voice recorder would be turned
on at a strictly fixed moments of time, and was working over some definite time, you should
select flag "Work on alarm clocks". It is possible to work either in a mode of "Cyclic alarm"
or by separately set alarms. In the mode of "Cyclic alarm" the voice recorder makes
recording on a daily basis at preset time interval. When operating by separate alarm clocks, it
is necessary to set the certain number of alarms in the window "Number of alarm clocks",
depending on the desired number of voice recorder inclusions. To initialize each of the
alarms it is needed to set the date (day of the month) and time of initialization , as well as the
duration of operation of this alarm. After this period the voice recorder will turn off and wait
for the next turn on by the alarm clock. Alarms operate in a strict sequence from the first to
the tenth. The voice recorder will turn itself off after the run for the last alarm.
l) Save the configuration file. After setting the desired configuration of the voice
recorder, click the "Save configuration file." The program will create a new one or overwrite
an existing configuration file dict.ini to the directory. Copy the created file dict.ini to used
on the microSD card and turn on the voice recorder.
m) Read the configuration file. If you want to read the contents of a previously
created configuration file, click "Read configuration file" and select the directory for
reading the file dict.ini.
2.8 Output of available information in the file tags.
After checking the integrity of the selected file, dict.exe program generates a report with
information about the available tags in the file. The report contains information on the num-
ber of tags in scanned file, their names and their corresponding samples. This file has the
same name as the file, which is checked, but with the extension «.txt» (for example, if the
original file is named «FL_8.WAV», the file with information about the tags will have the
name «FL_8.TXT»). The generated file with information about the tags is automatically
stored in the directory of the originally scanned file. File with tags information may be useful
when listening to audio files, which do not have function of recognition tags.

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Fig. 5. The structure of the file with information about the tags, formed by dict.exe program.
3. The system of tags of the voice recorder."
Voice Recorder "SOROKA-06E" supports automatic layout of files. The system of tags,
which is used, makes the analysis of the files more convenient and allows to avoid the loss of
time of files creation / modification while their copying. Tags are placed in the recording
files in the following cases:
1) Always at the beginning and at the end of the audio recording for each file.
2) When you press the control button of voice recorder for the purpose of marking the de-
sired recording place.
3) In the voice activation mode, every time of detection of sound signal (voice activation).
The analysis of tags may be performed, for example, by using the program Sound Forge 6.0
and above or using the supplied on disk program dict.exe (c. 2.8).
Fig. 6. Example of automatic tags recognition program Sound Forge in audio files of the
voice recorder "SOROKA-06." The name of each tag corresponds to the date and time of its
creation.
Tag on VOX initiali-
zation
Tag on pressing the but-
ton

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4. Description of items for external power of voice recorder
4.1 Power cable
Power cable is designed for connecting the voice recorder to an external power supply
with voltage 5..28 Volt.
Voltage on the output of power cable supply is 5 V
The power cable is protected against reverse polarity voltage.
The power supply cord labeled in colors (red or blue) is positive.
4.2 External accumulator
As an external accumulator, it is used Li-Pol accumulator with an output voltage
3.3..4.2 Volt.
Fig. 7. Example of the voice recorder "SOROKA- 06E" operation with an external accumula-
tor and external stereo microphones.

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5. Logger.
Logger is designed to capture in the non-volatile memory of the voice recorder high-
lights of the voice recorder’s work, as well as all emergencies. In addition, data is stored in
logger on the manufacturer of the voice recorder (voice recorder identification number and
the number of domestic software).
Logger stores from 32 to 48 last events, as well as their time and date, when they oc-
curred.
If the logger is turned on, (see. 2.7 (j)), then if the voice recorder is switched off (except
crash reset) logger is recorded to micro SD into the file INF_REG.TXT.
It is not recommended to use the logger continuously since this reduces resource of non-
volatile memory of the voice recorder (it only affects work of the logger itself).
Brief description of the recorded events and the structure of the logger is shown in Table
6.
Table 6. Description of tags and events of registrar.
Shorthand
Description
DEVICE_NUMBER
Identification number of voice recorder
DICT_SOFTWARE_NUMBER
Number of domestic software of voice recorder
POWER_RESET
Reset by power failure
PIN_76_RESET
Processor hardware reset
PMMSWBOR
For official purposes
WAKE_UP_FROM_LPX.5
For official purposes
SECURITY_VIOLATION
For official purposes
SVSL
For official purposes
SVSH
For official purposes
SVML_OVP
For official purposes
SVMH_OVP
For official purposes
PMMSWPOR
For official purposes
WATCH_DOG_TIME_OUT
Looping\stop of the processor’s program due to not
serviceability of card or software failure
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_ON
Turning the recorder on by pressing
SD_MEMORY_IS_OVER
No free space on the micro SD –the voice recorder is
switched off
ALARM_TURN_OFF
Voice recorder is turned off by timer

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ALARM_TURN_ON
Voice recorder is turned on by timer
SD_READ_TIMEOUT
Micro SD doesn’t respond to a command to read data
SD_WRITE_FAILURE
Command to record data do not pass to micro SD
NO_SD_BLKWR_RESPONSE
It is not confirmed by micro SD on the recording data
block
PROGRAM_BOR_RESET
Complete reset the voice recorder. Called of forcibly if
the voice recorder has not detected a micro SD memory
card or if the memory card of filing system contains
errors.
SNMI_INTERRUPT
Microprocessor system failure (it is necessary to save
the file INF REG.TXT)
FLASH_ACCESS_ERRORE
Error of the program (to save the file INF REG.TXT)
OSCILATOR_FAULT
Hardware failure of the oscilator
NMIFG_INTERRUPT
System failure of the microprocessor (to save the file
INF REG.TXT)
EMPTY_CELL
Empty cell
UNDEFINED_ERRORE
Unspecified error or reset
6. Current repair of the voice recorder
General instructions
If any defect of the voice recorder is detected, repair works are needed. Current repairs of
the voice recorder should be made at the factory or in the workshop.
Attention !!! Unauthorised opening of the voice recorder leads to the removal of the war-
ranty from the voice recorder.
Typical faults
Typical faults of the voice recorder, which may be eliminated in the operating organiza-
tions are shown in Table 7.
Table 7. Typical faults of the voice recorder, and their solutions.
Faults
Methods of correction
The voice recorder doesn’t switch on
To charge the storage battery
Recorded on the voice recorder audio
files contain errors or are not readable
Replace the memory card. If this doesn’t work, then con-
tact the service centre.
7. Storage and transportation
The voice recorder should be kept in its original packaging in heated storage rooms at a
temperature ranging from +5 to +25 C with relative humidity less than 80% (at + 20 C). The
environment must be free from pairs of acids, alkalis and other aggressive impurities.
The voice recorder in a special packaging may be transported in closed transport (rail
cars, containers, closed type holds of water [sea or river] modes of transport), as well as in

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sealed the cockpits of planes and helicopters and under ambient temperatures from -50 to
+30˚C.
Attention !
If you want to keep a voice recorder for storage for over 1 month, completely charge
the battery.
Avoid storing the voice recorder in premises with air temperature over 25 C and less
than 0 C.
8. Manufacturer’s warranty
The manufacturer guarantees the accordance of the voice recorders to the technical re-
quirements, providing that the customer obeys instructions for operating conditions, transpor-
tation and storage, set up by this manual.
The warranty period is 12 months within the warranty period of storage.
The warranty period of storage is 18 months from the date of production, if the charge /
discharge cycles of the battery are held every 3 months.
The warranty period is extended for the period of warranty repairs, if any.
In the event of defects, discovered in the voice recorder due to the manufacturer's fault
within the warranty period, troubleshooting, to the point of replacing of the voice recorder
itself and its constituent units, are made at the manufacturer's expense.