Bosch PRM-UST User manual

PRM‑UST | PRM‑USTB
en User manual

Table of contents | en 3
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
Table of contents
1Important product information 4
1.1 Safety information 4
1.2 Disposal instructions 4
1.3 Class A Notice for FCC and ICES 003 4
1.4 Compliance to directive 2014/53/EU 5
2About this manual 6
2.1 Intended audience 6
2.2 Copyright notice 6
2.3 Trademarks 6
2.4 Notice of liability 6
2.5 Document history 6
3Product introduction 7
3.1 Parts included 7
3.2 Installation 9
3.3 Indicators and connections 9
3.3.1 Front panel 9
3.3.2 Rear panel 10
3.3.3 Remote control 11
4Product function 13
4.1 FM Tuner 13
4.2 USB or SD 15
4.3 Bluetooth® 16
5Troubleshooting 17
6Technical data 19

4en | Important product information
06.2022 | V01 | F01U397942 User manual Bosch Security Systems B.V.
1 Important product information
1.1 Safety information
1. Read and keep these safety instructions. Follow all instructions and heed all warnings.
2. Download the latest version of the applicable installation manual from
www.boschsecurity.com for installation instructions.
Information
Refer to the Installation Manual for instructions.
3. Follow all installation instructions and observe the following alert signs:
Notice! Containing additional information. Usually, not observing a notice does not
result in damage to the equipment or personal injuries.
!
Caution! The equipment or the property can be damaged, or persons can be injured if
the alert is not observed.
Warning! Risk of electric shock.
4. System installation and servicing by qualified personnel only, in accordance with
applicable local codes. No user-serviceable parts inside.
5. System installation for emergency sound (except for call stations and call station
extensions) in a Restricted Access Area only. Children may not get access to the system.
6. For rack-mounting of system devices, make sure that the equipment rack is of suitable
quality to support the weight of the devices. Use caution when moving a rack to avoid
injury from tip over.
7. The apparatus shall not be exposed to dripping or splashing and no objects filled with
liquids, such as vases, shall be placed on the apparatus.
Warning! To reduce the risk of fire and electric shock, do not expose this apparatus to
rain or moisture.
8. Mains powered equipment shall be connected to a mains power outlet socket with a
protective earthing connection. An external, readily operable, mains plug or all‑pole mains
switch shall be installed.
9. Only replace the mains fuse of an apparatus with a fuse of the same type.
10. The protective ground connection of an apparatus shall be connected to protective
ground before the apparatus is connected to a power supply.
1.2 Disposal instructions
Old electrical and electronic appliances.
Electrical or electronic devices that are no longer serviceable must be collected
separately and sent for environmentally compatible recycling (in accordance with the
European Waste Electrical and Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should use the return and
collection systems put in place in the country concerned.
1.3 Class A Notice for FCC and ICES 003
applies to U.S.A. and Canadian models only

Important product information | en 5
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
Business Equipment
For commercial or professional use
This equipment has been tested and found to comply with the limits for a ClassA
digital device, pursuant to Part15 of the FCC and Canadian ICES‑003 requirements.
These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in residential area
is likely to cause harmful interference in which case the user will be required to
correct the interference at their own expense. Intentional or unintentional changes or
modifications not expressly approved by the party responsible for compliance shall not
be made. Any such changes or modifications may void the user’s authority to operate
the equipment.
1.4 Compliance to directive 2014/53/EU
Hereby, Bosch Security Systems B.V. declares that this product is in compliance with essential
requirements and other relevant provisions of Directive 2014/53/EU.
This product is allowed to be used in all EU member states.
Frequency bands Maximum output power
2402 — 2480MHz (EDR) 2.27dBm
2402 — 2480MHz (BLE) 1.41dBm

6en | About this manual
06.2022 | V01 | F01U397942 User manual Bosch Security Systems B.V.
2 About this manual
The purpose of this user manual is to provide all required information needed for the
installation and configuration of the Bosch music source products PRM-UST and PRM-USTB.
2.1 Intended audience
This user manual is intended for professionals familiar with audio systems.
2.2 Copyright notice
Unless otherwise indicated, this publication is the copyright of Bosch Security Systems B.V. All
rights are reserved.
2.3 Trademarks
Throughout this document trademark names may have been used. Rather than put a
trademark symbol in every occurrence of a trademark name, Bosch Security Systems states
that the names are used only in an editorial fashion and to the benefit of the trademark owner
with no intention of infringement of the trademark.
2.4 Notice of liability
While every effort has been taken to ensure the accuracy of this document, neither Bosch
Security Systems nor any of its official representatives shall have any liability to any person or
entity with respect to any liability, loss or damage caused or alleged to be caused directly or
indirectly by the information contained in this document.
Bosch Security Systems reserves the right to make changes to features and specifications at
any time without prior notification in the interest of ongoing product development and
improvement.
2.5 Document history
Release date Documentation version Reason
XX.2021 1st version Content creation

Product introduction | en 7
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
3 Product introduction
Bosch’s PRM-UST and PRM-USTB are professional multisource music players intended to be
used as background music sources for public address and commercial audio applications.
Both products have USB interface, SD card input for playing stored music files, and tuner for
FM frequency band broadcast. Additionally, PRM-USTB facilitates music streaming through
Bluetooth®*.
i
Notice!
PRM-USTB is available only in selected countries.
Contact your nearest Bosch dealer or distributor for more information
*The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Bosch Security Systems, Inc. is under
license. Other trademarks and trade names are those of their respective owner.
3.1 Parts included
The box contains the following parts:
16GB
Quantity Component
1 Music Source PRM-UST or PRM-USTB
1 Remote control (battery not included)
1 Set of 19”mounting brackets with screws
2 Stereo RCA audio cable

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06.2022 | V01 | F01U397942 User manual Bosch Security Systems B.V.
Quantity Component
1 Mains power cord
1 Antenna cord including connector
1 SD memory card (16GB)
1 Quick installation guide
1 Safety information

Product introduction | en 9
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
3.2 Installation
The product can be placed on a desk or mounted in a 19” rack. For rack mounting the 19"
brackets must be attached first.
3.3 Indicators and connections
3.3.1 Front panel
16
2
23 24 25 26
1 3 4 5 62
7 8 9
17 18 19
222110
11 12 13 14 15 20
Number Description
1 Display (FM radio): LCD panel shows information related to FM radio
2 Digits 0-9 for preset (favorite) radio station selection or for playing a specific FM
frequency
3 Scan the FM radio stations
Display shows the frequency for the stations while scanning is in progress
4 Store a specific frequency channel as preset (favorite), in combination with the
digit keys
5 Short press: previous radio channel
Long press: decrease frequency for fine tuning
6 Short press: next radio channel
Long press: increase frequency for fine tuning
7 RDS information
8 Decrease radio volume
9 Increase radio volume
10 Mute FM radio audio output
11 SD card socket

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Number Description
12 USB socket
Note: Do not use the front and rear panel USB sockets at the same time
13 Display (media): LCD panel shows relevant information for media inputs USB, SD
and Bluetooth®
14 Short press: previous track
Long press: fast backward
15 Short press: next track
Long press: fast forward
16 Stop
17 Play or pause
18 Repeat a track or a list
19 Media source selection from USB, SD or Bluetooth®
20 Power on/off
21 Short press: previous folder
22 Short press: next folder
23 Tone control (Equalizer, Bass, Treble, Balance and Loudness)
24 Decrease media volume
25 Increase media volume
26 Mute media audio output
3.3.2 Rear panel
L
FM Antenna
FMMedia
Voltage Selector
110-120V- 220-240V-
Combined
Output
R
27 28 30 3429 31 32 33
Number Description
27 Mains input socket with fuse folder
28 Grounding screw
29 Voltage selector switch with cover
30 USB socket
Note: Do not use the front and rear panel USB sockets at the same time
31 Media output: USB, SD or Bluetooth (stereo output)
32 Combined output: tuner, USB, SD or Bluetooth® (stereo output)
Note: Due to priority output function, when the media (USB, SD, Bluetooth®) is
active, the tuner audio output will be automatically muted
33 Tuner output socket (stereo output)

Product introduction | en 11
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
Number Description
34 To connect the FM antenna (75ohm)
i
Notice!
Do not use the USB socket to charge other devices. It has an output current limited at
500mA.
3.3.3 Remote control
12
1
2
3
4
5
6
8
9
10
13
11
17
16
7
15
14
Number Description
1 Turn on/off the LCD panels
2 Mute all music sources
3 Decrease or increase tone control (Equalizer, Bass, Treble, Balance and
Loudness)
4 Previous level folder
5 Repeat a track or a list
6 Increase and decrease volume of the selected music source
7 0-9: Digits for radio frequency preset radio station selection or playing a specific
frequency

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Number Description
8 Short press: stores a specific frequency channel as favorite, in combination with
the digit keys
Long press: opens RDS information for FM
9 Select the music source: Tuner -> USB -> SD-> BT -> Tuner
10 Tone control (Equalizer, Bass, Treble, Balance and Loudness)
11 Confirm selection
12 Next level folder
13 Back to previous menu
14 Short press: next track
Long press: fast forward
15 Short press: previous track
Long press: fast backward
16 Play or pause
17 Scan the FM radio stations
Display shows the frequency for the stations while scanning is in progress
To insert the batteries (2x 1,5V, size AAA):
1. Remove the battery compartment cover on the rear side of the remote control.
2. Insert the batteries as indicated in the battery compartment.
3. Close the battery compartment with the cover.
i
Notice!
If the remote control is not in use for a longer period of time, remove the batteries to prevent
any damage due to battery leakage.
i
Notice!
Disposable batteries and battery packs at the end of their technical lives should be discarded
with due care for the environment. When possible, take batteries to a local recycling station.

Product function | en 13
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
4 Product function
4.1 FM Tuner
The FM tuner supports the frequency band of 87.5 to 108.0MHz.
Operation
– Connect the antenna
– To scan the radio channels, press the button from the device or remote. Long press
and to fine tune the frequencies. The display panel shows the frequency. During
power on, the last played FM channel starts playing.
– Press to select the previous channel or to select the next channel.
– To play a specific frequency, enter the number from the device or remote. For example,
when you enter 1023, the 102.3MHz frequency will be played. Any number entered
outside FM frequency band will be ignored.
– To store a specific frequency as preset channel (favorite):
– Enter three or four digits of the frequency from the device or remote. For example,
when you enter 1023, the display will show 102.3MHz.
– Press the store button .
– Enter a number from 1 to 30 in which the radio channel is going to be saved as a
favorite. Any number outside this range will be ignored.
– Press the store button again .
– Press RDS (Radio Data System) to enable the functions of the radio data system:

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– PS: program service name.
– CT: clock time and date.
– Press and hold the RDS key for more than two seconds to exit the RDS function.

Product function | en 15
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
4.2 USB or SD
The USB or SD interface supports MP3 audio files stored on a USB flash memory device or an
SD card up to 32GB of exFAT or FAT32 file system.
The USB interface supports USB 2.0 — USB 3.1 flash drives.
Operation
– Insert an SD card or an USB flash memory device.
– Select the source, USB device or SD, with the key of the device or from the remote.
– Press to play the track.
– The LCD lower line will show, from left to right:
Track number (maximum 8000 tracks), mm:ss (track duration).
– If ID3 tags of the MP3 file are available, the following additional information will be
scrolling on the display. If the ID3 tags are not available, the filename will be
displayed instead:
File - < name >, Track - < name >, Artist - < name >, Album - < name >
– Press to toggle between play or pause.
– In pause mode, the pause symbol (||) and the track playing time elapsed will be
shown.
– Press to select the previous track or to select the next.
– Press to stop.
To play a list of tracks:
– Organize the files in the folder.
– Browse to the folder.
– Press play.
– To repeat a track or list of songs, press . This button toggles as follows:
– 1st press: Current track will always be repeated (display shows: ONE).
– 2nd press: All tracks will be played once (display shows: ALL).
– 3rd press: All tracks will be repeated in loop in random sequence (display shows:
RND).
– 4th press: All tracks will be repeated in sequence (display shows: SEQ).
– 5th press: All tracks of the present folder will be played (display shows: FLD).
The sequence is repeated with the 6th press.

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– For tone control, press .
This button toggles as follows:
– 1st press: Equalizer, △ and ▽ to choose between Normal, Pop, Rock, Jazz, Classic.
– 2nd press: Bass, adjust the bass with △ and ▽.
– 3rd press: Treble, adjust the treble with △ and ▽.
– 4th press: Balance, adjust the balance with △ and ▽.
– 5th press: Loudness, switch on or off the loudness with △ and ▽.
The sequence is repeated with the 6th press.
The selected option appears on the display.
4.3 Bluetooth®
PRM-USTB has a Bluetooth® receiver that can be paired with a Bluetooth®-enabled music
source like a mobile phone, tablet, or computer.
Pair a device
1. Select the source of the PRM-USTB as Bluetooth®.
If the device is already paired, the display will show Paired.
2. Enable Bluetooth® on your device (mobile phone, tablet, or computer).
3. Select Bosch PRM-USTB from the list of discovered products.
The display on the PRM-USTB shows Pairing.
4. If the pairing is successful, the PRM-USTB display shows Paired.
Operation
– Press to play the track.
– Press to toggle between play or pause.
– Press to select the previous track or to select the next.
– For tone control, press .
This button toggles as follows:
– 1st press: Equalization, △ and ▽ to choose between Normal, Pop, Rock, Jazz, Classic.
– 2nd press: Bass, adjust the bass with △ and ▽.
– 3rd press: Treble, adjust the treble with △ and ▽.
– 4th press: Balance, adjust the balance with △ and ▽.
– 5th press: Loudness, switch on or off the loudness with △ and ▽.
The sequence is repeated with the 6th press.
The selected option appears on the display.

Troubleshooting | en 17
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
5 Troubleshooting
Problem Possible cause Possible solution
The unit does not work. Power (plug) disconnected, the
unit is switched off or the mains
fuse is broken.
Insert power cord and switch
on the unit. Check the mains
fuse.
USB or SD storage
device not detected.
Device does not comply with
USB mass storage.
Use a device complying with the
class of USB mass storage
(some portable audio players
included in the class of image
devices are not supported. Also,
some flash card readers cannot
be detected)
USB hub in use. Some USB hubs will not
operate properly. Try a different
USB hub, or connect the
storage device directly to the
USB port. Also, if multiple
devices for USB storage are
connected through a USB hub,
only one of the devices will be
recognized.
Format not supported. Use only FAT, FAT32 and exFAT
file structure.
The connection with the unit has
been terminated because an
electrical current higher than
allowed was taken from unit’s
USB socket.
Wait several minutes. The rating
(allowable current) for this unit
is 500mA or less per USB port.
Use USB storage devices that
meet these standards. If you
have a USB storage device
connected through a
buspowered USB hub, connect
the USB storage device directly
to this unit port. If shorted a
long time the USB port will
become defective.
Partitioning of SD card is wrong.
Apart from SD, SDHC and class
of SD cards, it is also possible
that the card has a different
partition table than expected.
Reformat the USB or SD card
with a PC that is known to give
good results.
MP3 tracks do not play.
Format not supported. MP3s are supported up to
320kbps.
Media is in "Stop" or "Pause"
mode.
Change the mode to "Play".

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Problem Possible cause Possible solution
No audio output.
The audio output cable has come
loose or has not been properly
plugged in.
Plug in audio cable properly.
The audio output is muted. Adjust the volume setting for
tuner or media player.
The audio output connectors or
plugs are dirty.
Wipe away dust or dirt and
reinsert the plug.
The selected source is currently
in pause or mute mode.
Press the play button or the
mute button.
The audio output is
distorted or full of
noise.
The audio output cable has not
been properly plugged in.
Connect the audio cable to one
of the three stereo RCA output
connectors.
Connectors or plugs are dirty. Wipe away dust or dirt and
reinsert the plug.

Technical data | en 19
Bosch Security Systems B.V. User manual 06.2022 | V01 | F01U397942
6 Technical data
Electrical
Mains power supply
Voltage range 110 — 120VAC +/-10%, 50 — 60Hz
220 — 240VAC +/-10%, 50 — 60Hz
Power supply fuse 0.63A/250V
Power consumption 15W max.
FM tuner
FM frequency range 87.5 — 108MHz
Frequency response 50Hz — 12kHz +/-3dB
Channel separation (1kHz) >25dB
Signal-to-noise ratio >50dB
FM input sensitivity 26dBu
Antenna impedance 75ohm
Audio output level 1.5Vrms +/- 1dB at 10kΩ
USB or SD source
Frequency response 50Hz — 18kHz +/-1dB
Signal-to-noise ratio (1kHz) >75dB
Total harmonic distortion (1kHz) <0.5%
Channel separation (1kHz) >70dB
Audio output level 1.5Vrms +/-1dB at 10kΩ
USB output current limit 500mA
Maximum memory size of USB and SD card 32GB maximum
Supported file structure FAT, FAT32 and exFAT
Supported audio files mp3, wma, wav, flac, ape, m4a
Bluetooth®
Version Bluetooth® 5.0
Distance >5m
Supported profiles A2DP, AVRCP
Frequency response (Hz) 50Hz — 18kHz +/- 1dB
Signal-to-noise ratio (1kHz) >75dB
Total harmonic distortion (1kHz) <0.5%
Channel separation (1kHz) >70dB
Audio output level 1.5Vrms +/- 1dB at 10kΩ

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Mechanical
Unit dimensions (HxWxD)
With brackets:
Without brackets:
44x482x250mm (1.73x18.98x9.84in)
44x430x250mm (1.73x16.93x9.84in)
Unit mounting Stand-alone, 19" rack (19" wide, 1U high)
Unit color Black RAL 9017
Unit weight 3.20kg
Remote control dimensions (LxWxD) 130x44x20mm (5.23x1.73x0.79in)
Remote control weight: (without batteries) 32g
Environmental
Operating temperature 0°C — 45°C
Storage temperature -40°C — 70°C
Relative humidity (non-condensing) <90%