EVISTR L157 Digital Voice Recorder User Manual

Product Overview & Features

The EVISTR L157 is a digital voice recorder designed for capturing audio. It features a built-in microphone, speaker, earphone jack, and USB connectivity for data transfer and charging.

Key Components and Buttons:

• Built-in Mic: Captures voice for recording.
• Screen: Displays status, menus, and file information.
• Speaker: For audio playback without earphones.
• Earphone Jack: For private listening.
• USB Socket: For data transfer and charging.
• POWER Button: Switches the device on/off. Recommended to keep in the ON position unless storing the device.
• PLAY/PAUSE Button: Plays recordings or turns the device on/off (when the power button is ON).
• REC Button: Initiates recording.
• STOP Button: Saves the current recording or stops playback. Also used to switch between MUSIC and RECORD folders.
• M (Menu) Button: Accesses menu options. Use UP/DOWN to select and M to confirm. Press STOP to return to the main menu.
• UP/DOWN Buttons: Navigate through menu options and files.
• VOL+ / VOL- Buttons: Adjust speaker volume and are used for setting time/date.
• REC Light: Indicator light for recording status (can be turned off).

Screen Information:

The device screen displays:

• Battery Bar: Indicates battery level.
• Length of Recording: Shows current recording duration.
• Speaker Volume: Displays current volume level.
• Recording Format & Bit Rate: Shows the audio format and quality.
• Remaining Recording Time: Indicates available storage capacity.
• Recording Status: Shows if recording, paused, or playing.
• L / R Channel Meter: Visual representation of audio input.
• Total Recording File Count: Displays the number of files stored.

Getting Started

Package Contents:

• 1 x L157 Device
• 1 x Earphone
• 1 x USB Cable (for data transfer and charging)
• 1 x VIP Card

Initial Setup:

• Powering On: Push the POWER button to the ON position. Then, press and hold the PLAY button for two seconds to turn on the device.
• Charging: Use the provided USB cable to connect to a computer, USB socket, or USB adapter (input less than 5V 1A). The device supports charging and recording simultaneously.
• Registering for VIP: Register within 30 days via www.evistr.com/vip or email support-us@evistr.com to receive an extended 18-month product warranty.

Product Warranty:

The device comes with a 1-year warranty, which can be extended to 18 months by registering as a VIP customer.

Basic Operations

Recording and Saving:

• Start Recording: Press the REC button. The REC light will indicate recording.
• Pause Recording: During recording, press the PLAY button to pause. Press PLAY again to resume.
• Save Recording: Press the STOP button to save the current recording.

Playback:

• Play Recording: Press the PLAY button to play the last saved recording.
• Navigate Files: Tap UP or DOWN buttons to select the previous or next recording file.
• Fast Forward / Rewind: During playback, press and hold the DOWN (FF) button for fast forward, or the UP (REW) button for rewind.
• Adjust Volume: Use the VOL+ / VOL- buttons during playback.

Music Playback (MP3 Player Function):

• Transfer music files (MP3, WAV, FLAC, APE, OGG, WMA) from a computer to the recorder via USB. It is recommended to create a separate folder for music files, not within the RECORD folder.
• Press and hold the STOP button to switch to the MUSIC folder for playback.

Deleting Files:

• Turn on the device by pressing PLAY.
• Press M to access the menu.
• Navigate to "Delete File" using UP/DOWN and press M.
• Select "Delete" for a single file, or "Delete All" for all files.
• Use UP/DOWN to select the file to delete (defaults to the latest file if not specified).
• Press M to confirm the deletion.

Data Transfer:

• Connect the device to a computer using the provided USB cable.
• The device will appear as a removable drive (e.g., "L157").
• Copy or drag and drop recordings from the "RECORD" folder to your computer.
• Ensure you do not cut off the transfer process to avoid file corruption.

Menu Options

Access the menu by pressing the M button. Use UP/DOWN to navigate and M to select/confirm.

1. Play Settings:

• Play Mode:
  • Repeat Off: Normal playback.
  • Repeat One: Repeats a single file continuously.
  • Repeat All: Repeats all files in the current directory.
  • View Playing: Plays the first 10 seconds of each file.
  • Shuffle: Plays files in random order. Select "Off" to disable.
• Sound Setting: Adjust equalizer settings (Rock, Pop, Soft, Jazz, Classical, Techno, Off).

2. Folder View:

Browse files within the "RECORD" folder.

3. Record Settings:

• Recording Quality: Select between WAV (1536Kbps, lossless PCM) or MP3 (128Kbps, 64Kbps) for different file sizes and quality levels.
• Record LED: Turn the recording indicator light ON or OFF.
• Subsection Record: Automatically saves recordings into separate files at set intervals (Half Hour, One Hour, Two Hour, or CLOSE).
• Voice Activated Mode (AVR):
  • AVR Mode ON/OFF: When ON, the device only records when voice or sound above a certain decibel level is detected, saving storage space.
  • Voice Activated Sensitive Level: Adjust sensitivity from Level 1 (requires loud sound, >70db) to Level 5 (highly sensitive to quiet sounds). Note: Use regular recording for important lectures/meetings to avoid missing quiet speech.
• Record Monitor: Use earphones to hear the audio being recorded (ON/OFF).
• Exit: Return to the previous menu.

4. System Settings:

• Sleep Timer: Automatically shuts down the device after a set period (10-120 minutes) to save battery. Use with caution to avoid interrupting recordings.
• Backlight Timer: Sets the display timeout (10 seconds to always on). Note: 'Always on' consumes more battery.
• Brightness: Adjusts the screen brightness (00-15).
• Date and Time: Set the current date and time using UP/DOWN and VOL+/- buttons, confirming with M.
• Language: Select the device's interface language. Contact support if the wrong language is set.
• Information: Displays firmware version and release date.

Technical Specifications

Recording Parameter Table:

This table shows the maximum recording file time that can be stored in the device, not the battery time. Device capacity is subject to the entity.

Troubleshooting

Common Issues and Solutions:

• 1) No Voice Recordings: If the screen displays "no voice recordings" or "no songs," simply press REC or M to begin.
• 2) Turn Off the Record Light: Navigate to Menu -> Record Setting -> Record LED -> select OFF.
• 3) Format Error: This can occur if the POWER button is turned off during recording or if recordings are less than 5 seconds. Save recordings by pressing STOP before powering off. Use MP3 format for better computer compatibility. For WAV files on Windows 10/MAC, use media players like MplayerX or VLC.
• 4) Disk Error: Caused by power loss during formatting or static shock. To rescue, keep the power button OFF, connect to a Windows computer, and format the recorder disk.
• 5) Failed to Connect to Computer: Ensure the recorder is turned OFF before connecting. Do not press any buttons on the recorder while connected, as this may cause it to only charge. Try a different USB socket or cable. Contact support if issues persist.
• 6) Can Recordings Be Deleted from the Computer?: Yes. Recordings are in the "RECORD" folder on the "L157" drive. Files can be deleted or copied to other storage.
• 7) Buttons Do Not Work When Connected to Computer: The recorder is in connection mode. Press and hold the M button to exit connection mode and restore button functionality.
• 8) Cannot Find My Recordings: The device may default to the Music Folder. Press STOP to switch to the RECORD folder. Check computer connection if still not found.
• 9) Turn On Voice Activated Function (AVR): Go to Menu -> Record Setting -> Voice Activated Setting -> select AVR mode ON. The screen will show "VOR".
• 10) How to Use AVR Mode: The device records only when sufficient sound is detected. Adjust sensitivity (Level 1-5) in Record Settings. Note: Use regular recording for important events to ensure all audio is captured.
• 11) Recorder Not Recording: Check if the REC light is blinking and if "VOR" is displayed. If so, AVR mode is active and requires a loud sound to start recording. Adjust sensitivity or turn off AVR mode.
• 12) Playback in Random Order: Go to Play Settings -> Play Mode and ensure "Shuffle" is set to OFF.
• 13) How to Use the A-B Repeat Function: During playback, press M. "A" will flash; select the start point. Press M again, select "B" for the end point. The section between A and B will repeat.
• 14) The Recording Has Unwanted Noise: Avoid recording near sources of interference like computers, fans, or air conditioners, as the recorder may pick up static noise.
• 15) The Recorder Auto Shuts Down While Recording: This is likely due to the Sleep Timer function being active. Disable it in System Settings -> Sleep Timer -> OFF. Alternatively, restore factory settings.
• 16) Cannot Shut Off My Voice Recorder: When charging or connected to a computer, the device may remain powered on even if the POWER button is OFF. This is normal as it draws power directly.
• 17) How to Format the Recorder: Navigate to Menu -> System Setting -> Format Device -> Format Disk -> select Yes and confirm with M. This erases all data. Do not turn off power during formatting.
• 18) Space is Full: Connect to a computer, back up recordings, and then delete files from the recorder to free up space.

Important Notice for Using This Device:

DOs:

• Push the POWER button to ON when receiving the recorder. Use the PLAY button to turn it on/off during normal use.
• Listen to a test file to check sound levels.
• Backup data frequently.
• Charge via USB cable to a computer or wall charger (input < 5V 1A).
• Save recordings and recharge immediately when the battery is low.
• The device supports charging and recording simultaneously.
• Remember to press STOP to save recordings.
• The device will not make noise during recording; the REC LED light will flash (this can be turned off).
• Keep this booklet for future reference.
• Contact support@evistr.com for any issues.
• Provide Order ID, Firmware Version, or Bar Code for effective customer service.
• Register for VIP service within 30 days for extended warranty and service.

DON'Ts:

• Do not shut down the device's power button while saving a recording.
• Do not scratch the recorder body.
• Avoid typing or writing near the device while recording, as it may capture noise.
• Do not format the device unless files are backed up.
• Do not cut off power while formatting.
• Do not delete a file unless it has been backed up.
• Do not press any buttons when the device is connected to a computer.
• Do not use non-original micro USB cables for data transfer, as not all support it.
• Do not use "View Playing" unless necessary; it only plays 10 seconds of each file.
• Do not use Voice Activated Function unless needed; it might miss low-decibel speech.
• Do not use Auto Record Function unless needed, as it boots up to record automatically.
• Do not turn on the Sleep Timer function unless needed, as it forces shutdown even during use.
• Do not pause the device for extended periods, as it may automatically shut down if there's no operation.

Additional Information

EVISTR regularly updates its e-book based on customer feedback. For more information or assistance, visit www.evistr.com or contact Support@evistr.com.