LR32 audio recorder module
Contents
1. not connecterd to a power supply and you will connect the power later At this time it s not necessary to move the slide swith and the new time and configuration is always used at the time when the power supply is connected If you want to set the internal clock again you must repeat the procedure above by saving a new configuration on the card with the new preselect time All recordings should be password protected by using password protection It is recommended to verify the correct clock settings inside the recorder before you decide to use scheduled recording After you set the time in the recoder according the described procedure make a short record manualy by using a slide switch and then remove the card and open Record Manager and check this record The time stamp of this record must match the real time when it has been recorded Password protection and audio files encryption For LR 32 PRO version is a different password protection method All records are encrypted by using the password in the recorder settings When the password protection is enabled and the password is entered all new recorded audio will be encrypted by using this password When you open the image file all encrypted records will be displayed in a red color in the list Please note when you ll change the password again all previously stored records are still encrypted with the previous password When you want to replay the record or export it you ll be asked to type th2. the recording starts the LED flashing sequence will follow When the LED flashes 5 times it means some failure and the recording didn t start When it flashes only ones the card is full and recording can t be started Flashing 2 to 4 times indicates available memory space 4 flashes more than 75 space available 3 flashes more than 50 space available 2 flashes less than 25 space available The recorder should store up to 255 records If this count has exceeded the card is considered as full When the recording is in progress the LED makes short flashes each 2 seconds This function should be disabled for discrete recording When the voice activated recording is enabled the LED flashes only when the sound level is above selected threshold and recording is in progress The recording is stopped when the card is full or by moving the slide switch to OFF position Stop sequence is indicated by 3 LED flashes Power supply for recorder The recorder should be powered with any power source giving the voltage in a range of 3 0 6 0V Do not exceed the 6 0V limit this may significantly damage the recorder The recorder should be powered by small coin cell batteries with any chemistry Zinc Air batteries gives the longest recording time in comparing the smallest size The small coin cell non rechargeable batteries may not provide sufficient current during a write cycles to the SD card For this case connecte the batteries in a series
3. 6GB card Micro SDHC card 65dB 16bit uncompressed logaritmic 4bit ADPCM or 2bit ADPCM 44kHz 22kHz 16kHz 11kHz 8kHz 5 5kHz 16bit 8 10m lt 50uA 1 6mA at 3 0V yes user selectable automatic gain control or fixed microphone gain by using included software WAV format selectable daily period week period or calendar slide switch microphone slide switch ON position slide switfh OFF position indication LED positive terminal of power supply negative terminal of micro SD card slot power supply Module description Power consumption in different recording modes based on 3 0V voltage supply in mA Sample rate 4bit 2bit ADPCM ADPCM 5 5KHz 1 85mA 22kHz 58ma mA AH 106mA esma TA The current is calculated when the 3 0V voltage is used When you have a higher voltage or for example 6 0V batteries the consumption is decreased with the increasing voltage in proportional way B attery life for different operating modes in continuous recording mode with CR 123 type battery in days Sample rate uLaw 4bit 2bit ADPCM ADPCM 5 5kHz 22kHz 5days tidas J S ef 44khz 3days 5days ll Ef For extending battery life should be used voice acitivated recording mode This option may extend this time significantly Operating instructions For controlling all functions is used one slide switch and multifunctional LED Before using the recorder you must have ready form
4. IR 32 audio recorder module User manual Version 1 03 This recorder let s you to record any audio or human conversation in high quality and store all on micro SDHC card The state of art technology with very low power consumption allows you to record very long records when the battery is powering the module This recorder is equipped with very high sensitive microphone and wide dynamic range and is able to record conversation from distance over 30 feet 10 meters All stored recordings are accessible on micro SDHC card by using included recording manager developed for Windows operating system This software includes fast overview of each record and simple editing functions including serach for active sound in long records For protection of stored data it is possible to set password access for all stored recordings Integrated real time clock should start recording in any specific period of each day or at any specific date All recorded data are stored with time marks which gives you very good overview in case of long time recording Technical data Dimension Power supply voltage Maximum recording time Card type Signal to noise ratio Storage format Sample rate Bit width Built in microphone sensitivity Power consumption in stand by mode Power consumption in VAS mode Voice activated recording AGC function Exporting format Scheduled recording Operating mode select 17 5x27x3mm 3 0 6 0V over 70days with 1
5. ation should be changed in main menu by selecting Options gt Recorder settings This windows is divided into 4 following sections Recorder settings xl General Audio Schedule Other Recording mode 11025Hz uLaw 16days 13hrs 11025Hz ADPCM 33days 3hrs 11025Hz ADPCM 2bit 66days 8hrs 16000Hz none 5days 16hrs 16000Hz uLaw 11days 10hrs 16000Hz ADPCM 22days 20hrs 16000Hz ADPCM 2bit 45days 16hrs 22050Hz none 4days 3hrs The first general part is used to select recording sample rate and compression method To achieve the best quality you should use 16kHz or 22kHz without compression but this mode takes the most power from the battery and will use most of the space for storing the data For best performance check table showing battery life and memory capacity for each specific mode Using ADPCM 2bit compression results in worst audio quality Recorder settings x General Audio Schedule Other Voice activated recording Treshold level Delay sec M ey Oe tat A Be on ee M Enabled I I A fi a Sr DE er ee Microphone volume control IT Enable AGC Maximum mic volume E p x oe Dee ee ee Audio page is used for voice activated recording When this option is enabled recorder is recording only when it detects sound above selected threshold level Minimum level means the highest sensitivity Delay is specifying the time for how long recording continues after this sound level is n
6. atted SDHC card with FAT32 file system Card must be formatted with FAT32 file system only and can t contain any other files or folders than image files created by the recorder and can t be used by other equipment like PDA digital camera etc When the card is used for the first time and doesn t contain any files the recorder will first create all image files required for the recording This process will start after you insert the card and turn the slide switch to ON The LED will start flashing quickly for approximately 2 minutes depending on a card size for 32GB card could be a longer time When it s done the normal recording will start Each card contains one or several files named rcimage raw rcimage ral etc All those files are used by the Record Manager to open your records Each audio record is stored into those files and no other separate file will appear on the card Do not remove or insert the card when the recording or the initial card formatting is in progress Start and stop the recording This action is operated by using a slide switch The slide switch works in parallel with the internal timers for scheduled recording For example when the slide switch is in ON position the recording is not interrupted regardless the settings of scheduled recording When the timer activates the recording it still continues until the scheduler reaches the scheduled stop time regardless the position of slide switch Before
7. d using ADPCM2 compression if you require good quality of audio
8. e password which has been used at the time when this audio record has been made Q Can t start recording LED flashes only once and the card is not full A The card contains 255 records For next recording you must delete at least last record from the list or format the card Q Card can t be initialized LED always flashes 5 times A Card is not micro SDHC type or is not properly inserted or the power supply can t give sufficient current to initialize the card Q The beginning time of recording is incorrect or scheduled recording is not working A This time is always equivalent to the real time clock which are synchronized from the card This problem should happen when the power was disconnected You must sychronize the time again Q Recorder was operating and the power source has been suddenly interrupted A For this case the last record will be stored properly without any problems Q The image file is missing on the card or the card is unreadable in PC computer or the image file was deleted A In this case never try to recover the date by using any data recovery software and consult this problem with your distributor of recorder All the data should be recovered but recorder is using specific way to store the data and special procedure must be used for this case Q Recorded sound is distorted in very loud sequences A Enable AGC function in recorder s settings to prevent microphone overloading by loud sounds Avoi
9. ot detected anymore Recommended value is 5 seconds or more When LED is enabled to flash during recording it is flashing only when recording is in progress and not when the recorder is in idle mode waiting for exceeding the selected threshold level This mode saves significantly the battery energy resulting much longer time of operation For microphone volume control is implemented AGC function The recorder should be used in noisy environment or to monitor large rooms where all silent sounds are required to be recorded When AGC checkbox is checked this function is enabled and recorder automatically adjust microphone volume according detected sound level Maximum microphone volume indicates the maximum volume used by AGC function When AGC function is disabled this selected volume is fixed for all the time Recorder settings x General Audio Schedule Other Timer activated recording From Hours minutes Daily timer 0 Single timer a Y To Hours minutes Weekly timers Start Stop I Monday 0 10 2 0 2110 I Tuesday 0 sijo 0 10 I Wednesday 0 110 0 10 I Thursday 0 0 2110 I Friday 0 Silo 0 10 FT Saturday 0 110 0 110 T Sunday 0 10 0 2110 Remark When the time is set to 00 00 the timer will not be active Recorder is equipped with internal real time clock and recording scheduler If you want to use time activated recording you can choose f
10. rom 3 options Daily timer enables recording scheduler to start and stop recording at the specified time period which repeats every day Single timer is used to start and stop only once at given time and date The last is weekly timer where you can specify a different time periods for each day of a week Every time set to 00 00 is ignored which enables to schedule recording for example over the midnight Recorder settings x General Audio Schedule Other Other J Enable LED during recording JV Set time Power up date and time Hours Min 11 8 2014 fid jo Password protected access I Enabled The last part of a configuration contains various options LED should be disabled in this window to allow discrete mode of operation This disables flashes during recording Indication of power up start and stop sequence is not affected by this option The real time clock is synchronized according the preset time stored on microSD card When you select in this window power up date and time this date and time is synchronized inside the recorder when the card is inserted into a recorder and the switch is moved to ON position The check box Set time must be checked for internal clock synchronization The recorder will load the preset time only the first time when the same card is inserted into the recorder and the switch is moved to ON The same effect is when you insert the card and the recorder is
11. to provide a higher voltage but not over 6 0V in total and select the recording mode with a less power consumption Types of supported SDHC cards The recorder supports a wide range of micro SDHC cards however we recommend you to use our included card for best performance The cards from the other brands should consume more power and this should affect the power consumption significantly in recording mode Maximum supported card size is 32GB Record Manager The software Record Manager is used for handling all records and configuration of the recorder All funcions are described in a separate manual for this application This software is a common application used for all of our recorders and only a configuration or only a part of the configuration is a specific part for each recorder type This part is described below Before you start changing the configuration keep in mind all the configuration is stored on microSD card The recorder will use the new configuration only when the card is inserted back to the recorder and the recorder starts the recording This is important for the scheduled recording or a real time clock settings to first activate the recording by using a slide switch This action will not only activate the recording but it will load the new configuration into the recorder including the real time synchronization when it has been saved in a configuration All configuration is stored in image file on microSD card The configur
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