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VN-4100

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What are the specifications for this product?

Olympus VN-4100 Digital Voice Recorder

Olympus VN-4100 Digital Voice Recorder
Product Number 141923
Shipping date: April 2007
Box Contents
VN-4100 Digital Voice Recorder
Two AAA Alkaline Batteries
Instruction Manual
Warranty Card

Specifications
Model VN-4100
Recording Format CELP, ADPCM (WAVE)
Recording Media 256 MB built-in Flash memory
Recording Time XHQ mode: Approx. 11 hours 40 minutes
HQ mode: Approx.23 hours 40 minutes
SP mode: Approx. 47 hours 20 minutes
LP mode: Approx. 144 hours 20 minutes
Card Format n/a
Input Level -70 dBv
PC Interface n/a
LCD 23 x 25 mm
LED 2 colors (red = record/transfer, green = playback)
Folder Messages 4 folders, 100 messages per folder
Sampling Frequency XHQ mode: 16.0 kHz
HQ mode: 16.0 kHz
SP mode: 12.0 kHz
LP mode: 7.0 kHz
Overall Frequency Response XHQ mode: 300 - 7,200 Hz
HQ mode: 300 - 7,200 Hz
SP Mode: 300 - 5,400 Hz
LP Mode: 300 - 3,100 Hz
LP Mode Yes
Voice Activation Available via menu setting
Demographic Data Input n/a
Practical Maximum Output 120 mW
Write Protection n/a
Speaker Built-in 28 mm round dynamic speaker
Microphone Built-in condenser microphone (monaural)
Microphone Jack 3.5 mm mini-jack, impedance 2 kohms
Earphone Jack 3.5 mm mini-jack, impedance 8 ohms
Power Supply Two AAA Alkaline or two AAA NiMH batteries
External Power Supply n/a
Battery Life Alkaline: Approx. 25 hours
NiMH: Approx. 15 hours
Size 4.0" x 1.5" x 0.8" (101.6 x 39.1 x 19.6 mm) excluding protrusions
Weight 2.2 oz (62.9 g) including batteries
Audio Output Earphone output or speakers

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What are the main features of this model?

The Olympus VN-4100 digital voice recorder is part of a new generation of VN-Series recorders that employ CELP (Code Excited Linear Prediction) technology to extend recording capacity. The four recording quality modes provide options for recording high-quality sound files or expanding the memory capacity by using a lower-quality recording mode. The VN-4100 also has options for setting an alarm or configuring the recorder to automatically record unattended for a pre-set time period. The microphone and earphone jacks allow the use of audio accessories.

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What is CELP?

Code Excited Linear Prediction (CELP) is an audio technology initially developed for use in cell phones. CELP works by comparing incoming sound signals to a model of human voice phonetics and saving the difference as an error report. When playing back the file, the error report data is compared to the model to reconstruct the recording. The benefit is a very detailed file that employs lower bit rates and lower sampling frequencies, resulting in a more efficient use of the flash memory of the recorder.

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How much recording time is available in the VN-4100?

The length of the potential recording time available in the VN-4100 is governed by the recording quality mode selected. CELP (Code Excited Linear Prediction) technology has dramatically increased the recording capacity of the VN-4100 compared to earlier generations of the VN-Series Olympus digital voice recorders.

An XHQ (Extra High Quality) mode recording uses more memory than an LP (Long Play) quality mode recording because the XHQ mode makes a more-detailed digital record and uses more memory than does LP mode.

The table below shows the approximate maximum dictation recording times possible in the VN-4100 in the different quality modes:

<
Quality Mode Maximum Dictation Recording Time
XHQ mode 11 hours 40 minutes
HQ mode 23 hours 40 minutes
SP mode 47 hours 20 minutes
LP mode 144 hours 20 minutes

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How is the VN-4100 turned off?

The [HOLD] switch is the power ON/OFF switch on the VN-4100. It is recommended to set the [HOLD] switch to HOLD when replacing the batteries to preserve the time and date settings.

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How is the recording volume controlled?

The VN-4100 always records at 100% volume level to prevent accidentally recording with the volume set too low.

The recorder has two microphone sensitivity levels:

  • LOW is a low sensitvity level used for dictation and close-up recording.
  • HIGH is a high sensitvity level used in conference or lecture situations.

Microphone sensitvity is set in the recorder menu. The function is identified by an icon that looks like a microphone.

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How is the playback volume controlled?

The playback volume is controlled during playback using the [+] (plus) and [-] (minus) positions on the four-way keybpad on the recorder's face. Pressing [+] increases the playback volume. Pressing [-] decreases the playback volume.

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Can playback speed be controlled?

Pressing the [PLAY] button during playback changes the playback speed to 75% normal speed. SLOW appears on the LCD screen during slow playback. Pressing the [PLAY] button a second time changes the playback speed to 150% normal speed. FAST appears on the LCD screen during fast playback. Pressing the [STOP] button stops the playback and resets the recorder to normal playback speed.

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What are Index Marks?

Index Marks are digital tags that can be inserted while recording or during playback. They are used to skip forward or backward in recordings to pre-selected points. Up to 10 Index Marks can be added to a single file. They are entered by pressing the [FOLDER/INDEX] button on the recorder.

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How can I format the VN-4100?

The VN-4100 is formatted using the CLEAR function. Using the CLEAR function erases the time and date settings as well as all of the files, so be certain the files are saved elsewhere before clearing the recorder. The procedure is as follows:

  1. Hold the [STOP] button and [ERASE] button simultaneously for 3 seconds or longer.
  2. Press the [FF] or [REW] button to select YES.
  3. Press the [PLAY] button. The recorder will be formatted.

In some instances, using the CLEAR function will reset the recorder if it is performing erratically. Files deleted using the CLEAR function cannot be retrieved.

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What is VCVA?

Variable Control Voice Actuator (VCVA) is a function that configures the recorder to record automatically only when sound is detected at a pre-set level, and stop when the sound drops below the threshold level. The purpose of the function is to eliminate "dead air" during recordings, thereby conserving memory and shortening file times.

VCVA is enabled in the recorder menu.

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How are files erased from the VN-4100?

Individual selected files or the entire contents of a selected folder can be erased from the VN-4100.

To erase a selected file:

  1. Press the [REW]or [FF] button to select the file.
  2. Press the [ERASE] button.
  3. Press the [REW] or [FF] button to select YES.
  4. Press the [PLAY] button.

To erase the contents of a folder:

  1. Press the [REW] or [FF] button to select the folder.
  2. Press the [ERASE] button twice.
  3. Press the [REW] or [FF] button to select YES.
  4. Press the [PLAY] button.

Erased files cannot be retrieved.

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How deos the TIMER function work?

The TIMER function enables the recorder to automatically record unattended for a pre-set time period. To program the recorder for timer recording, do the following:

  1. Open the recorder's menu by pressing the [DISP/MENU] button for three seconds.
  2. Using the [+] or [-] buttons on the four-way keypad, scroll down to TIMER.
  3. SET flashes on the LCD screen. Press the [PLAY] button.
  4. Enter the recording start time by setting the hour with the [+] or [-] buttons. Press the [FF] button to select the minutes setting, and set the minutes using the [+] or [-] buttons.
  5. Enter the recording end time by setting the hour with the [+] or [-] buttons. Press the [FF] button to select the minutes setting, and set the minutes using the [+] or [-] buttons.

The [HOLD] switch must be in the power ON position. When the timer recording is finished the settings will be erased.

To disable the function, return to the TIMER function in the menu, set it to OFF, and press the [PLAY] button. This operation also deletes the start time and end time settings.

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How does the ALARM function work?

The ALARM function can be set to play back an audio file at a pre-determined time. This means the VN-4100 can be used for audio reminders or as a travel alarm. An alarm setting must be attached to a particular file in a particular folder. The recorder does not have to be set to the folder being used--when the alarm time comes, the recorder finds the file.

To set an alarm:

  1. Select or record a message file to be linked to the alarm
  2. Open the Menu by pressing the [DISP/MENU] button for three seconds
  3. Using the [+] or [-] buttons scroll to the ALARM menu icon (looks like a dot with double-parentheses around it).
  4. SET flashes on the LCD screen. Press the [PLAY] button.
  5. Enter the alarm time by setting the hour with the [+] or [-] buttons. Press the [FF] button to select the minutes setting, and set the minutes using the [+] or [-] button.
  6. Press the [PLAY] button to set the time.

When the alarm goes off, it will beep for five minutes or until any button is pressed to play the recording. The alarm will sound even if the [HOLD] switch is in the power OFF position. The alarm will sound daily until the ALARM function is set to OFF.

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