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File system requirements on 

USB stick 

The UPL24 only supports fat formatted usb sticks 

The UPL24 reads from the inserted USB stick in read-only mode and cannot write or modify the USB stick in 

any way. 

The UPL24 can only 

read folders

 starting with 01 to 99 (using the first 2 positions of  the folder name) 

read tracks

 

in folder

 starting with 01 to 99 (using the first 2 positions of  the track name) 

read id.txt

 in root 

So:  

folder

 MUST start with 01 to 99, but may contain extra text in folder name like  album name 

track

 MUST start with 01 to 99, but may contain extra text in track name like song name 

Note

:  

UPL24 does not check extensions and assumes there are only WAV files in folders 

It’s ok to add other files (like artwork) in folders, as long as they do not start with 01 to 99, otherwise they 

will be opened as track, but will fail to play. 

Example: 

01 Dire Straits - Brothers In Arms 

01 Money For Nothing.wav 

Also see “WAV File on USB stick” on page 10 

Card ID 

The UPL24 tries to read 

id.txt

 in the 

root

 of  the USB stick, the first 4 chars are displayed at startup or when 

the USB stick is inserted in the UPL24. 

Create the id.txt in a plain text editor and type the stick id as a number e.g. 0003 

Do not save as RTF, this will not work. 

If  there is no valid 

id.txt

 in the root the UPL24 will display 

0

.

 

0.

 

0

.

 

0

.

 for stick id 

  

The id will be used to recognise the USB stick when inserting. 

After power up of  the UPL24 the complete USB stick structure is read in memory including id.txt 

When not playing, usb stick can be temporarily removed e.g. to lookup cd/track in PC and then can be re-

inserted into UPL24, if  id is the same as the id that was last in the UPL24 then the card is not re-read and will 

continue where left off. 

Note that changes to the USB stick since it was removed are ignored, if  you added cds/tracks then switch 

UPL24 off/on or insert different USB stick to force re-read of  stick.

UPL24 USER GUIDE

 7

Summary of Contents for UPL24

Page 1: ...UPL24 USER GUIDE UPL24 USER GUIDE 1...

Page 2: ...aluminum and could have sharp edges Fire Hazard The UPL24 is equipped with a LiPo rechargeable battery with built in overcharge and short protection circuit PCM Fire Hazard Do not use batteries withou...

Page 3: ...m working correctly T Toslink 44 96 kHz optical digital output PB Push button for use with firmware update 5V USB A 5V DC 1A charger input ON OFF ON Battery connected to UPL24 but completely disconnec...

Page 4: ...Cables Standard Toslink cable Mini Toslink UTOS Charging Cable USB A to USB B Charging Cable USB A to USB mini B for remote control UPL24 USER GUIDE 4...

Page 5: ...tery lasts longer when charging regularly and frequently discharging completely before charging reduces the battery life Replace battery If battery needs to be replaced make sure that it is the same t...

Page 6: ...dle of the key area All functions of the UPL24 will be controlled by the RC Functions of the upper multi function key previous next CD fast reverse fast forward playing track by 10 seconds previous ne...

Page 7: ...Dire Straits Brothers In Arms 01 Money For Nothing wav Also see WAV File on USB stick on page 10 Card ID The UPL24 tries to read id txt in the root of the USB stick the first 4 chars are displayed at...

Page 8: ...ing the i key again will switch back to normal cd track only display mode Shuffle key The shuffle key can be used to switch between normal sequential playback cd shuffle mode or cd track shuffle mode...

Page 9: ...play 44 1 16 48 16 88 2 16 96 16 44 1 24 48 24 88 2 24 and 96 24 for all other sample rates this error will be shown unsupported track is skipped E 20 RX init error E 21 TX init error E 50 Clock oscil...

Page 10: ...er Metadata tags Rip CD to WAV Ripping an official CD to WAV is a reliable way to get WAV files for USB stick When the rip software is setup correctly it is often possible to rip a cd to a folder and...

Page 11: ...Display Display for UPL24 Sleep mode 0 1 0 9 Track play 0 1 0 9 Error example of unsupported sample rate E 1 0 No card inserted Card Number example 0 0 0 1 Track time 0 4 2 1 UPL24 USER GUIDE 11...

Page 12: ...d DC 5V 1A USB A socket cable to USB B RC Charger not included DC 5V 1A USB A socket cable to mini USB B Output sockets 1x Toslink Input sockets 1x USB B socket for charging 1x USB B socket reserved f...

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