HIMS BookSense XT User Manual

HIMS CO., LTD. BookSense XT – User Manual

BookSense XT

User Manual

English Manual

For Software Version 1.0

June, 2009.

HIMS Co., Ltd.

139-9, Gajung-dong, Yuseong-gu, Daejeon, Korea 305-350

Phone: [phone]

Fax: [phone]

Email: [e-mail]

Website: www.himsintl.com

HIMS CO., LTD. BookSense XT – User Manual

About BookSense XT

Congratulations on the purchase of your new BookSense XT. This guide contains all
the information you will need to get started with your new BookSense XT.

HIMS is proud to introduce BookSense XT, the powerful digital talking book portable
device.
BookSense XT is designed as an advanced high performance daisy player.

BookSense XT is a digital audio player which is made by HIMS Co., LTD. who is
well known manufacturer of SENSE products. It is very convenient portable device
which can play digital books, audio files, text files, and DAISY content. You can
record live voice such as lecture, FM radio and even record external audio source
using line-in mode.

BookSense XT is advanced model and has built-in internal 4GB storage space in it
so that user can save various content without using external memory and it has built
in FM radio and Bluetooth capability.

With BookSense XT, if you use Bluetooth headset, you can be free from annoying

wire connection between BookSense XT and your ears.

Copyright 2009. All RIGHTS reserved, HIMS Co., LTD.
This User Manual is protected by copyright belonging to HIMS, with all rights
reserved. The User Manual may not be copied in whole or part, without consent from
HIMS.

HIMS CO., LTD. BookSense XT – User Manual

TABLE OF CONTENTS

1. Overview BookSense XT ............................................................................................... 1

1.1 What’s in the package? ............................................................................................ 1

1.2. Hardware Specifications .......................................................................................... 1

1.3. Physical Description of BookSense XT .................................................................... 2

1.3.1 Front Face of the Device .................................................................................... 3

1.3.2 Back of the Device ............................................................................................. 3

1.3.3 Left Side of the Device ....................................................................................... 3

1.3.4 Right Side of the Device ..................................................................................... 3

1.3.5 Top Side of the Device ....................................................................................... 3

1.3.6 Bottom Side of the Device .................................................................................. 3

1.4 Turning the Device On after purchasing .................................................................... 4

1.5 Inserting or Removing the Battery ............................................................................. 4

1.6 Turning the Device On/Off ........................................................................................ 4

1.7 Charging BookSense XT .......................................................................................... 4

1.8 Inserting or Removing the SD CARD/USB Memory/USB CD-ROM ............................ 5

1.8.1 Inserting or Removing the SD CARD .................................................................. 5

1.8.2 Inserting or Removing the USB Memory/CD-ROM .............................................. 5

1.9 Connecting to PC ..................................................................................................... 5

2. Basic Functions and Structures ..................................................................................... 6

2.1 Folders used in the BookSense XT ........................................................................... 6

2.2 Switching Mode ....................................................................................................... 6

2.3 Changing Volume .................................................................................................... 6

HIMS CO., LTD. BookSense XT – User Manual

2.4 Navigating Through Files and Folder ........................................................................ 7

2.5 Deleting File or Folder .............................................................................................. 7

2.6 Using Menu, Dialog, Combo Box, Edit Box ............................................................... 8

2.7 Checking Battery Status ........................................................................................... 8

2.8 Checking Date &Time .............................................................................................. 9

2.9 Changing Voice ....................................................................................................... 9

2.10 Hold Switch ........................................................................................................... 9

3. Using Help Mode .......................................................................................................... 9

4. Media ......................................................................................................................... 10

4.1 What is supported in the Media? ............................................................................ 10

4.2 Playing Audio Files ................................................................................................ 10

4.3 Pause .................................................................................................................... 10

4.4 Changing Moving Unit ............................................................................................ 10

4.5 Moving by 1 track ................................................................................................... 10

4.6 Moving by 5 tracks ................................................................................................. 10

4.7 Moving to First or Last track ................................................................................... 11

4.8 Moving by Time ..................................................................................................... 11

4.9 Section Repetition .................................................................................................. 11

4.10 Mark .................................................................................................................... 11

4.10.1 Inserting Mark ................................................................................................ 11

4.10.2 Moving to Mark .............................................................................................. 12

4.10.3 Deleting Mark ................................................................................................ 12

4.11 Adjusting Playing Speed ...................................................................................... 13

4.11.1 Play Slowly .................................................................................................... 13

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4.11.2 Normal speed ................................................................................................ 13

4.11.3 Play Fast ....................................................................................................... 13

4.12 Setting Moving Mode as Time .............................................................................. 13

4.13 Shuffle ................................................................................................................. 13

4.14 Setting Moving Mode as Percentage ..................................................................... 14

4.15 Repetition ............................................................................................................ 14

4.16 Equalizer Setting .................................................................................................. 14

4.17 Saving the Playlist ................................................................................................ 14

4.18 Checking the File Information of Playing ............................................................... 15

4.19 Checking the Tag Information of Playing ............................................................... 15

4.20 Using Menu in the Media ...................................................................................... 15

4.20.1 Equalizer Setting ........................................................................................... 15

4.20.2 Playback Settings .......................................................................................... 15

4.20.3 Selecting Playlist ........................................................................................... 17

4.20.4 Saving Playlist ............................................................................................... 18

5. DAISY ........................................................................................................................ 19

5.1 What is supported in the Daisy? ............................................................................. 19

5.2 How to play DAISY content .................................................................................... 19

5.3 Pause .................................................................................................................... 19

5.4 Changing Moving Unit ............................................................................................ 20

5.5 Moving by Phrase .................................................................................................. 20

5.6 Moving by Paragraph ............................................................................................. 20

5.7 Moving by Heading ................................................................................................ 20

5.8 Moving to Home/End ............................................................................................. 20

HIMS CO., LTD. BookSense XT – User Manual

5.9 Moving by Time ..................................................................................................... 20

5.10 Moving by Mark ................................................................................................... 20

5.11 Moving by Level ................................................................................................... 21

5.12 Moving by Page ................................................................................................... 21

5.13 Mark .................................................................................................................... 21

5.13.1 Inserting Mark ................................................................................................ 21

5.13.2 Moving to Mark .............................................................................................. 22

5.13.3 Deleting Mark ................................................................................................ 22

5.14 Adjusting Playing Speed ...................................................................................... 23

5.14.1 Play Slowly .................................................................................................... 23

5.14.2 Normal Speed ............................................................................................... 23

5.14.3 Play Fast ....................................................................................................... 23

5.15 Setting Moving Mode as Time .............................................................................. 23

5.16 Moving to Page .................................................................................................... 23

5.17 Moving to Heading ............................................................................................... 24

5.18 Checking Content Information .............................................................................. 24

5.19 Checking the Status of Content Information .......................................................... 25

6. Book Reader ............................................................................................................... 25

6.1 What is supported in the Book Reader? ................................................................. 25

6.2 Playing the Document File ...................................................................................... 25

6.3 Pause .................................................................................................................... 26

6.4 Changing Moving Mode ......................................................................................... 26

6.5 Moving by Page ..................................................................................................... 26

6.6 Moving by Paragraph ............................................................................................. 26

HIMS CO., LTD. BookSense XT – User Manual

6.7 Moving by Line ...................................................................................................... 26

6.8 Moving by Sentence .............................................................................................. 26

6.9 Moving by Word ..................................................................................................... 26

6.10 Moving by Character ............................................................................................ 27

6.11 Moving by Phonetic .............................................................................................. 27

6.12 Moving by Mark ................................................................................................... 27

6.13 Search Word ....................................................................................................... 27

6.14 Mark and Voice Memo ......................................................................................... 27

6.14.1 Switching Mode between Mark & Voice Memo ................................................ 27

6.14.2 Inserting Mark ................................................................................................ 28

6.14.3 Inserting Voice Memo .................................................................................... 28

6.14.4 Going to Mark and Voice Memo ..................................................................... 29

6.14.5 Deleting Mark and Voice Memo ...................................................................... 29

6.15 Adjusting Playing Speed ...................................................................................... 30

6.15.1 Play Slowly .................................................................................................... 30

6.15.2 Normal Speed ............................................................................................... 30

6.15.3 Play Fast ....................................................................................................... 30

6.16 Moving to Page .................................................................................................... 30

6.17 Moving by Percent ............................................................................................... 30

6.18 Checking the Status of Content Information .......................................................... 31

6.19 Using Menu in the Book Reader ........................................................................... 31

6.19.1 Recently Documents ...................................................................................... 31

6.19.2 Mark Information ............................................................................................ 31

6.19.3 Page Settings ................................................................................................ 32

HIMS CO., LTD. BookSense XT – User Manual

7. Radio .......................................................................................................................... 32

7.1 Tuning to the Previous Frequency .......................................................................... 33

7.2 Tuning to the Next Frequency ................................................................................ 33

7.3 Moving to the Previous Frequency by 0.1MHz ........................................................ 33

7.4 Moving to the Next Frequency by 0.1MHz ............................................................... 33

7.5 Mute/Unmute ......................................................................................................... 33

7.6 Moving to the Previous Registered Channel ............................................................ 33

7.7 Moving to the Next Registered Channel .................................................................. 33

7.8 Registering Channels and quick move to Channel ................................................... 33

7.9 Changing the Sensitivity of Channel Scan ............................................................... 34

7.10 Deleting Registered Channel ................................................................................ 34

7.11 Listening to the Radio via Internal Speakers .......................................................... 34

7.12 Checking Channel Status Information ................................................................... 35

7.13 Recording Radio Broadcasting ............................................................................. 35

7.14 How to use Radio Menu ....................................................................................... 36

7.14.1 How to set the Internal speakers .................................................................... 36

7.14.2 Channel Recording Setting............................................................................. 36

7.14.3 Preset ........................................................................................................... 37

7.14.4 Channel Scanning Sensitivity ......................................................................... 38

8. Recording ................................................................................................................... 38

8.1 Recording via Internal Microphone ......................................................................... 38

8.2 Recording via External Microphone ........................................................................ 39

8.3 Recording via Line-in ............................................................................................. 39

8.4 Adding Marks during Recording .............................................................................. 40

HIMS CO., LTD. BookSense XT – User Manual

9. Global Options ............................................................................................................ 40

9.1 Alarm Settings ....................................................................................................... 41

9.1.1 Checking the Set Alarm ................................................................................... 41

9.1.2 Set Alarm ........................................................................................................ 41

9.1.3 Delete Alarm ................................................................................................... 42

9.2 Date & Time Settings ............................................................................................. 43

9.2.1 Check Date & Time .......................................................................................... 43

9.2.2 Set Date & Time .............................................................................................. 43

9.3 Voice Settings ....................................................................................................... 44

9.4 Recording Settings................................................................................................. 45

9.5 Check System Status ............................................................................................. 46

9.6 Bluetooth Options .................................................................................................. 46

9.7 Set Sleep Timer ..................................................................................................... 47

9.8 Power Saving Time ................................................................................................ 48

9.9 Format Storage Device .......................................................................................... 48

9.10 Set Current Storage Device .................................................................................. 49

10. Firmware Update the BookSense XT ......................................................................... 49

11. Trouble Shooting Guide ............................................................................................. 50

11.1 The BookSense XT will not Turn on ...................................................................... 50

11.2 If the BookSense XT stops Executing ................................................................... 50

11.3 Having trouble with Scanning Radio Channel ........................................................ 50

11.4 No Pairing while using Bluetooth Headset ............................................................. 51

11.5 Disappeared Registered channel .......................................................................... 51

11.6 No Sound from Internal Speaker or Earphone ....................................................... 51

HIMS CO., LTD. BookSense XT – User Manual

12. Warranty ................................................................................................................... 51

13. Contact Information ................................................................................................... 51

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1. Overview BookSense XT

1.1 What’s in the package?

The package contains following items:

 BookSense XT
 Battery pack
 AC adaptor ( 5V DC, 2A)
 Earphone
 SD Card (8GB)
 USB Cable for connecting to PC
 USB Cable for using USB thumb drive
 Pouch
 Necklace
 User Manual CD

1.2. Hardware Specifications

 CPU : S3C2443X
 RAM : 128MB
 MP3 Recording (Internal, External, Line-In, FM)
 USB OTG (Mini AB type connector)
 SD Card Slot
 Internal Memory : 4GB
 FM Radio
 Bluetooth 2.0 (Support stereo Bluetooth headset)
 Stereo Earphone Jack (3.5 pie)
 Stereo Microphone Jack (3.5 pie, available for Line-In or External)
 Internal Stereo Speaker
 Internal Mono Microphone
 Detachable battery (Lithium Polymer, 3.7V)

1) 12-hour continuous use.

2) 2.5 -hour charging time using AC adapter, 5-hour charging time using USB
cable.

 DC-Jack(3.5 pie)
 Size: 47mm(W) x 108mm(L) x 18.5mm(H)
 Weight: 115g

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1.3. Physical Description of BookSense XT

DATE & TIME Button

MENU Button

Side

MODE Button

VOLUME Button

SD Card

Front

OK (Confirm) Button

CANCEL Button

Navigation Button
Numeric Button

LED

Microphone jack
Ear phone jack

USB OTG

AC Adapter jack

PLAY button

RECORD Button

Hold Switch

RESET

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1.3.1 Front Face of the Device

The rough section in the upper part of the face is the speaker and right below it is the „DATE
& TIME‟ button. The navigation buttons are located below the „DATE & TIME‟ button which

has four UP, DOWN, LEFT, and RIGHT buttons with MENU button on the center. Beneath
the navigation buttons, there‟s a numeric key pad, 4 columns and 3 rows, with a raised dot
on the number 5 button. The left key in the last row is CANCEL button and right key is OK
button. Battery status LED is under the CANCEL button, and built-in internal microphone is
under the OK button.

1.3.2 Back of the Device

The battery compartment is located on the back of the device. To insert the battery please
refer to 1.5 Inserting and Removing the Battery. „Battery Lock Switch‟ is on the top center of
the battery compartment.

1.3.3 Left Side of the Device

Starting from the top, „MODE‟, „Volume UP‟, and „Volume DOWN‟ button are located on the
left side of the device. SD memory slot is located beneath these three buttons.

1.3.4 Right Side of the Device

The top two buttons are „PLAY‟ and „RECORD‟ buttons and „Hold‟ switch is right beneath it.
The „PLAY‟ button is also use for „Power‟ button. Using „PLAY‟ button to turning on and off

the device, please refer to 1.6 Turning the Device On/Off.
Under the „Hold‟ switch, there‟s a small hole for the „RESET‟ button which is used when the
device malfunctions or stops working. If you have difficulty pressing „RESET‟ button, you can
also reset the device by removing and re-inserting the battery. When you remove and re­insert the battery, you must insert the battery after at least 10 seconds.

1.3.5 Top Side of the Device

The Headphone and Microphone jacks (3.5 pie) are located on right and left side of the
center clip holder.

1.3.6 Bottom Side of the Device

AC Adapter jack is located on the left and USB OTG port is located on the right. Plug in end
of the power adapter into the power input jack and the other into an electrical outlet to
recharge the battery. USB OTG port is can be used to access USB memory, transfer files

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between PC, external USB CD-ROM, and charging the device using USB.

1.4 Turning the Device On after purchasing

To turn on the device for the first time after purchasing the BookSense XT, you need to
connect AC adapter to the device. Once you connect the BookSense XT to AC adapter, you
will hear the booting sound and the Media will be executing after 20 seconds. On successful
booting, you will hear booting completion sound. Once powered on, insert the battery and
start using the BookSense XT. Please refer to 1.6 Turning the Device On/Off.

1.5 Inserting or Removing the Battery

To insert the battery, find the proper battery orientation. Front side has smooth surface with
company logo engrave on it. The back side has rough surface with two tabs on either side at
the bottom. Insert the bottom edge of battery first, making certain the bump fits in the
appropriate opening, and snap the top edge in place. The smooth front side surface must be
facing up.
The battery is designed to fit in only the correct orientation. If you feel any resistance it is
likely you have the battery upside down. Secure the battery compartment by sliding the door
back on, ensuring it locks in place.
To remove the battery, find „Battery Lock Switch‟ on the top center of the battery
compartment and hold pushing up the switch; pull the battery out compartment by sliding the
door.

1.6 Turning the Device On/Off

To turn on the device, press and hold down the PLAY button for more than 2 seconds, which
is located on the right side of the device, near the top corner, and then you will hear a sound.
To turn off the device, press and hold down the PLAY button for more than 2 seconds again,
then you will hear a sound.

1.7 Charging BookSense XT

In order to charge the battery, you need to connect BookSense XT to the main adapter or to
a computer using the supplied USB cable. Follow these steps:

1) To charge the battery using main adapter, plug the supplied AC adapter into the AC
adapter jack on the bottom left edge of the device. A full recharge takes about 2.5
hours.

2) To charge the battery using the USB connection, plug the USB OTG cable into the

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USB OTG port on the bottom right edge of the device. Then the wider end of the
cable should be connected into USB port on your computer. If the BookSense XT is
turned on, a full recharge takes about 10 hours and when it is turned off, a full
recharge takes about 5 hours.

3) While charging, LED located below the CANCEL button will glow red and when it‟s
fully charged, it will glow green and you will hear “Charging completed” sound.

1.8 Inserting or Removing the SD CARD/USB Memory/USB CD-ROM

1.8.1 Inserting or Removing the SD CARD

To insert and remove the SD card, follow these steps:

1) Hold the device facing you. The SD card slot is located on the left side of the device.

2) One corner of the SD card is cut at a 45 degree angle.

3) This cut corner should be at the top right when you insert the card into the device
slot. If the card is not oriented properly it will resist insertion.

4) Gently push the card into the slot until it clicks into place. Do not use excessive force.
Only slight pressure is required to lock the SD card into place. Once its lock in place,
you will hear a sound.

5) To remove the card, push right on the left bottom edge to release it. Then pull it out.

1.8.2 Inserting or Removing the USB Memory/CD-ROM

To insert and remove the USB Memory/CD-ROM, follow these steps:

1) Connect USB to USB gender, USB gender to USB OTG port.

2) To connect USB CD-ROM drives, procedure are same as USB Memories. However,
device can recognize CD containing Daisy content only. CD media with other content
cannot be recognized by the device.

1.9 Connecting to PC

To connect BookSense XT to your PC, connect one end of the long USB cable to the USB
OTG port on the bottom right edge of the BookSense XT and the other end to your PC‟s
USB port. Windows will recognize the BookSense XT flashdisk and SD card as a USB drive.
You can then use Windows Explorer to transfer files back and forth. If the SD card is not
inserted, the second drive will not be displayed. When you enter the „BookSense‟ drive,

there will be „RECORD‟, „RADIO‟, „AUDIO BOOKS‟, „POD CASTS‟, „MUSIC‟, „BOOKS‟, and
„DAISY‟ folders. Please refer to 2.1 Folders used in the BookSense XT. While transferring file,

the BookSense XT cannot be used. (Note: But the charging will be proceeded automatically.)

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Each folder contains „Playlist‟, and „Mark‟ folders. These folders cannot be shown at the
BookSense XT. So do not save any files into these folders and you can‟t edit or cut files from
these folders.

2. Basic Functions and Structures

2.1 Folders used in the BookSense XT

Following folders are shown in the flashdisk:

 RECORD: Folder which contain the recorded files of voice or Line-in through the

“Media” program.

 RADIO: Folder which contains the recorded files of live radio channel recordings

through the “Media” program.

 AUDIO BOOKS: Folder which contains the audio book and other audio files.
 POD CASTS: Folder which contains the audio file from the Internet through the

“Media” program.

 MUSIC: Folder which contains music file that you want to play through the “Media”

program.

 BOOKS: Folder which contains files that you can read through the “Book Reader”

program.

 DAISY: Folder which contains daisy file to use with the “Daisy” program, you must

make folders for each daisy files. But „NewsLine‟, „NLS‟, and „Bookshare‟ folders are
located under the DAISY. If you save other content without making folders, device
won‟t be able to locate the files.

2.2 Switching Mode

When the BookSense XT is on, pressing MODE button to toggle through Media, Daisy, Book
Reader, and Radio. Once you change the Mode, file lists for each folder can be shown. If
you change to different mode while in action, action will resume when you come back to
previous mode.

2.3 Changing Volume

Use volume UP or DOWN button to raise or lower the volume between 1~ 21. Default setting
is 15. When you adjust the volume while playing, volume will be adjusted without any
notification. Only when it‟s adjusted to default setting (15), it will notify the user by beep
sound. However, device will announce the volume status when you are pause or idle stage.

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The BookSense XT allows you to adjust volume both earphone and internal speaker. When
you connect earphone to the device, you can adjust the volume which comes from earphone.
Removing earphone, you can adjust the volume which comes from internal speaker.

2.4 Navigating Through Files and Folder

Each mode has different names for the file list. Media uses “Audio List”, Daisy uses “Content
List”, and Book Reader uses “Book List”.

 Move to next file or folder: Press DOWN button.
 Move to previous file or folder: Press UP button.
 Entering sub folder: Press RIGHT button.
 Previous folder: Press LEFT button.
 Play file: Press PLAY or OK button.
 Toggle between male and female voice: Press number 5 button more than 2

seconds.

 Go to previous 5th object from current list: Press number 1 button.
 Go to next 5th object from current list: Press number 4 button.
 Go to previous 10th object from current list: Press number 2 button.
 Go to next 10th object from current list: Press number 5 button.
 Go to top of the list: Press number 3 button.
 Go to end of the list: Press number 6 button.
 Select all from the file list (only functional in Media): Press number 7 button.
 Select file or cancel selected file (only functional in Media): Press number 9 button.
 Cancel all selected lists (only functional in Media): Press CANCEL button.
 Delete file or folder: Press number 8 button.
 Change the disk: Press number 0 button more than 2 seconds.

2.5 Deleting File or Folder

To delete the file or folder in file list, follow these steps:

1) Move to file or folder that you want to delete.

2) Press number 8 button. Then “Delete (file or folder name)? Yes” will be announced.

3) Press OK or MENU button. Then “Delete completed” will be announced.

If you don‟t want to delete it, press LEFT or RIGHT button to select „No‟ then press OK

button.

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2.6 Using Menu, Dialog, Combo Box, Edit Box

Each mode has its own corresponding menus. Press MENU button to activate it.

 Next/Previous MENU: UP/DOWN button.
 Execute Menu/Open sub Menu: RIGHT, OK or MENU button.
 Previous Menu: LEFT button.
 Close Menu: CANCEL button.

Some menus have sub menu while you navigating through them. Use procedure 2 and 3 to
select or move back. However, when there is no sub menu and if you press buttons
indicated on second procedure, it will execute the function instead of opening the sub menu.

When Dialog opens up when you execute the Menu.

 Within Dialog Next/Previous object: UP or DOWN button.
 Within Dialog Changing Setting: LEFT or RIGHT button.
 Save setting and Close Dialog: MENU or OK button.
 Close Dialog without save setting: CANCEL button.

When you use navigation buttons during Menu, Dialog, and Combo Box, it will cycle through
the items.

Entering data into edit box

 Entering data: Numeric buttons.
 Deleting Data: CANCEL button.
 Confirming Data: LEFT or RIGHT button.
 Close Edit Box: Press CANCEL button until the last data and press CANCEL button

one more time.

2.7 Checking Battery Status

To check the battery status, the BookSense XT should be turned on first. Press and hold
down OK button for more than 2 seconds and it will announce the battery status (1 to 10). If
you press OK button while charging it will announce “Battery charging, using AC POWER”.
Note that if you charge using PC, the BookSense XT will not be operated, so the message
will not be announced. You should check LED.

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2.8 Checking Date &Time

To check date & time, you need to press „DATE & TIME‟ button which is located above
Navigation buttons. You can check date & time anytime even the device is turned off. If you
press the button while announcing, announcement will just stops.
To set date & time before checking, please refer to 9.2.2 Set Date & Time.

2.9 Changing Voice

BookSense XT has 2 voices, „Female (Kate)‟ which is the default, and „Male (Paul)‟. It
toggles between female and male by pressing number 5 button more than 2 seconds. But
this toggle will not work in the „Radio‟. You can also change the voice from the Global
Options, please refer to 9.3 Voice Settings.

2.10 Hold Switch

Hold switch allows you to lock the BookSense XT. It is located at the right side of the device.
Pull this switch down if you want to put the device in hold status. If the BookSense XT is on
hold status, buttons will not function regardless the device is on/off. Just push up the Hold
switch when you want to unlock them.

3. Using Help Mode

Help Mode has the function that gives you the instruction of operation when you press each
button. Each Mode has its own Help Mode to be announced, and Help Mode is not an actual
operating function.
To operate Help Mode, follow these steps.

1) Press MENU button.

2) Press UP or DOWN button and move to Help Mode.

3) Then press RIGHT or MENU button.

4) Now Help Mode will be operated. Once Help Mode is operated, Help Mode will
instruct the function of each button whenever you press each button.

Help Mode will be operated easily by pressing MENU button more than 2 seconds. When
you need to exit the help mode, you need to press MENU button one more time more than 2
seconds.