Bosch PRS-1AIP1 Technical data

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6

6.1

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IP Audio Interface

Configuration

The IP Audio Interface uses dynamic HTML web pages for configuration and status information monitoring. Configuration parameters are stored in the IP Audio Interface via the web browser.

Caution!

Your configuration parameters will be lost if the device is reset to factory default settings, see

Front view, page 9.

Connect to web browser

Open a web browser on a PC that is connected to the same network as the IP Audio Interface.

IP address.

Enter the announced IP address of the IP Audio Interface in the web browser address (URL)

box, see IP address (step 4), page 12.

The built‑in web server generates the STATUS page in the web browser by default. If not, repeat the installation process. The status screen is updated dynamically. The current implementation of this feature does not support all web browsers, for example, Google

Chrome.

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Figure 6.1: Status screen example

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Configuration page

Click CONFIGURATION on top of the page. The Network menu on the left side is opened as a default. Here you can set the parameters for the:

Network (default page)

– Streaming

– Partner Table

– Outgoing Route Table

– Control

Audio Settings

Supervision

Control I/O mapping

– Control Input Mapping Table

– Control Output Mapping Table

Serial

SNMP

Security

Default Settings

Figure 6.2: Configuration (Network) screen example

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6.2.1

IP Audio Interface

Network

Unit name

Default: clear

Enter a name for the device. This name will be displayed in the title of the web browser application page.

IP address

Default: 0.0.0.0

You can enter the 4 values of the announced IP address to create a static IP address, or ask your system administrator for a valid IP address and enter it here. Or you can enter e.g.

192.168.0.12 for an internal LAN.

Subnet mask

Default: 0.0.0.0

You can also enter the 4 values of the desired static IP address, or enter 255.255.255.0 for a C class network (standard).

Default gateway

Default: 0.0.0.0 (no gateway)

You can also enter the 4 values of the desired Gateway IP address, or 192.168.0.1 for a

Gateway in a LAN.

Notice!

The Gateway has to be set only when connecting to other devices over a WAN through a router.

Type of Service / DSCP

Default value: 0Differentiated Service Code Point (DSCP) is used for audio streaming. This supersedes the IP4 Type of Service (ToS) value and uses the same byte. Valid values are 0 -

63. Check for DSCP services available in your network to set this value. The recommended

DSCP for voice traffic is the value 46 for Expedited Forwarding (EF).

Use SonicIP

Default: Yes

The device will announce its IP address over the Audio Outputs 1 and 2. If you select NO, then the device will not announce its IP address. This way start up is faster.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Streaming

Audio is transmitted using RTP over UDP. This requires no special configuration other than defining the UDP ports to be used for the communication.

Figure 6.3: Steaming screen (default UDP settings)

UDP Receiver Port

Default: 3030

You can also select 0 if the port is disabled or enter a different number for receiving an

RTP/UDP stream, between 0 (disabled) and 65535.

UDP Tx Source Port

Default: 0

This setting is only used with a custom software application. The default number 0 causes a random port to be used. Enter a specific source port number when sending an RTP/UDP stream. Enter a value between 0 and 65535.

Back channel

Default: ON

The Backward Signal Data (Back) channel may be turned ON or OFF. Set to ON if audio or control data should be send back to the transmitter device.

Back channel period

Default: 0 x 100 milliseconds

The Back channel period determines the rate at which control data is sent back to the audio transmitter within the range 100 ms to 4 s. The audio transmitter will then update the control output at a rate between 300 ms and 12 s.

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6.2.3

IP Audio Interface

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

Partner Table

The Partner Table is used to set the route parameters of up to 16 remote IP Audio Interface devices (Partners).

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Figure 6.4: Partner Table screen (default)

Ptnr (Partner)

The first row, Un-known, is to configure the behavior of the receiving device for unknown partners, i.e. partners that are not identified by their IP address. Then the table continues with

16 partner entries. A multicast group must always be known, so multicast addresses are always compared with entries in the table. Unknown partners cannot have a priority assigned and cannot be activated by a Control Input.

Pri (Priority)

In this column enter the Priority of the incoming audio streams from partners (0 - 255). The stream with the highest priority (highest number) is accepted. Existing streams with a lower priority are overridden, even if selected by a Control Input. Full duplex connections are considered to be permanent one-to-one connections for which Priority settings are ignored.

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CI (Control Input)

Enter the number of the Control Input (1 - 8) of the receiver that will accept the audio stream from this partner. If the transmitting partner is streaming (always) to this receiver, this selection determines the accepted audio stream unless it is overruled by a higher priority stream. The default 0 means that a stream from this partner is not selected by a Control Input.

Full duplex connections are considered to be permanent one-to-one connections for which

Control Input selections are ignored.

Blk Inc (Block Incoming)

Default: unchecked

Check the check box to block the incoming data from the respective partner. Priority and

Control Input settings are ignored. The option to block individual partners is only available if the unknown partner is already blocked.

Spr Ply (Suppress Play)

Default: unchecked

Check the check box to suppress local playback of audio. This mode is used when rebroadcasting the incoming stream to other devices.

Re brd (Re-broadcast)

Default: Unchecked

Check the check box to allow for re-broadcasting to this IP address.

Sup vse (Supervise)

Check the checkbox to supervise the connection between the receiver and this partner. Even in case no audio stream is present the connection will be polled on a regular basis using an

ICMP message type 1 (ping). The replies will be counted and if 3 consecutive pings are not answered the partner device will be assumed to be off-line and the fault relay is activated.

Pings may also be lost due to network congestion but if the network connection is so bad that

3 consecutive replies are lost this condition should also be investigated. If all supervised devices come back on line then the fault relay will be cleared.

IP address

Default: 0.0.0.0

You can enter the IP address of the partner device here.

Port

Default: 3030

You can enter the port number of the partner device here, between 0 and 65535.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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6.2.4

IP Audio Interface

Outgoing Route Table

The Outgoing Route Table is used to set the data stream for up to 16 remote IP Audio Interface devices (Partners).

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Figure 6.5: Outgoing Route Table screen (default)

Configure the streaming depending on the following events:

Stream Always

Default: unchecked

Check the check box to automatically stream to the selected partners (1..16) on start-up.

Instead of being always on, the stream can be activated on one or more Control Inputs or on detection of an incoming Pilot Tone. Please note that this activation is edge triggered and not level triggered, so streaming starts when one or more Control Inputs become active or when a

Pilot‑Tone is detected, but the streaming stops as soon as one of them is deactivated.

Stream on Control Input 1-8

Default: unchecked

Check the check box to stream to the selected partner (1..16) on activation of a Control Input

(1..8).

Stream on Pilot Tone

Default: uncheckedCheck the check box to stream to the selected partner (1..16) on detection of a 20 kHz Pilot Tone on Audio Input 2.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Control

The Control menu is used to set the port on which the command data stream is received.

Figure 6.6: Control screen (default)

UDP command port

Default: 12301

This sets the port through which the device will receive commands via UDP. To disable this port, set to 0.

Web server port

Default: 0

This sets the port through which the web server of the device can be reached. If set to 0, the default port 80 is used.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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6.2.6

IP Audio Interface

Audio Settings

The Audio Settings are used to set all available audio input and output parameters.

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Figure 6.7: Audio Settings screen example

Audio inputs

Default: In 2, Line

For dual channel mode (MPEG encoding only), select input In 1 + In 2, Line.

To use a microphone, select In 1, Microphone. If a microphone input is selected, you can set the microphone type to Dynamic or Condenser. The phantom power supply for the microphone is automatically switched on when Condenser is selected.

Microphone supervision

Default: unchecked (disabled)

You can check the Supervision check box to enable microphone supervision.

Supervision of dynamic microphones is by measuring its impedance, supervision of a condenser microphone is by measuring its current consumption. When a supervised microphone gets disconnected or becomes defect a fault event is generated. This is visible on

the STATUS page, see Status page, page 39.

Microphone gain

Default: 0 dBYou can adjust the gain of the microphone input (0...22.5 dB) to adapt it to the microphone that is used.

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Line gain

Default: 0 dB

You can adjust the gain of the line input (0...22.5 dB) to adapt it to the signal level of the source.

Loop Input to Output

Default: No

You can select Yes to route the Audio Input signal immediately to the local Audio Output. This is typically done for testing. Acoustical feedback (howling) may occur if a microphone and a loudspeaker are connected.

Pilot tone super. (Pilot Tone Supervision)

Default: No

When Pilot tone supervision is enabled, the presence of a 20 kHz pilot tone on audio input 2 is supervised and the result is shown on the status page. That status is also incorporated in the header of any audio stream transmitted. A receiving device can use this information to control its own pilot tone output.

By regenerating the pilot tone at the output of the receiving device, a pilot tone can be

“transferred” from the input of the transmitter to the output of the receiver, even though the audio channel itself does not have a 20 kHz audio bandwidth.

Audio Output

– Output level

Default: 0 dB

You can select the output signal level (0...-70 dB) here. Audio Output 2 may have a fixed level 20 kHz pilot‑tone signal.

– Output delay

Default: 64 ms

The default 64 ms is a practical minimum value. You can change this audio buffer size setting to adjust the delay before the received audio stream is played. A too low value may cause dropouts in the audio signal depending on the quality of the network connection. Higher delay values can be used with the purpose of acoustically aligning loudspeakers connected to different IP Audio Interfaces, e.g. in tunnel applications.

The maximum delay that can be selected depends on the chosen audio coding format and whether the audio stream is full duplex or not. A more efficient coding scheme, lower sample rate and half duplex mode allows for a longer delay. For G.711 (u-Law or A-Law) at 8 kHz sampling rate and half-duplex, the delay can be set up to approximately 8 s.

– Output level

Default: 0 dB

You can select the output signal level (0...-70 dB) here. Audio Output 2 may have a fixed level 20 kHz pilot‑tone signal.

– Output delay

Default: 64 ms

The default 64 ms is a practical minimum value. You can change this audio buffer size setting to adjust the delay before the received audio stream is played. A too low value may cause dropouts in the audio signal depending on the quality of the network connection. Higher delay values can be used with the purpose of acoustically aligning loudspeakers connected to different IP Audio Interfaces, e.g. in tunnel applications.

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The maximum delay that can be selected depends on the chosen audio coding format and whether the audio stream is full duplex or not. A more efficient coding scheme, lower sample rate and half duplex mode allows for a longer delay. For G.711 (u-Law or A-Law) at 8 kHz sampling rate and half-duplex, the delay can be set up to approximately 8 s.

Audio format

– Encoding

Default: MPEG1-L2/22.05 kHz

You can select the audio encoding format here.

Options are MPEG1/2-layer 2 and -layer 3 (better known as MP3), G.711 (u-Law, A-Law) or uncompressed PCM at various sample rates.

MPEG1/2-layer 2 and -layer 3 allow for 2‑channel audio streaming; in that case select In1

+ In2, Line as audio input.

G.711 (u-Law and A-Law) and PCM are single channel modes; use either In2, Line or In1,

Microphone as input.

The bit rate is highest for uncompressed PCM and lowest for MPEG1/2 formats.

– MPEG Encoding Quality

Default: 7 (Highest)

You can select a quality level between 0 (lowest) and 7 (highest) for the encoding quality.

This setting is only valid for MPEG1/2-layer 2/3 (MP3). Higher quality settings use a higher bit rate and take up more network bandwidth. Also a higher sample rate for the same quality level increases the bit rate. If the required network bandwidth is not available (continuously) then audio dropouts may occur, especially for low delay settings.

The bit rate varies between approximately 30 kbps (quality level 0, sample rate 16 kHz) and 190 kbps (quality level 7, sample rate 48 kHz) for 2‑channels.

Audio Coding

Default: Full Duplex

Full Duplex is only available for the G.711 (u-Law, A-Law) and PCM formats. This means the device can simultaneously transmit an audio stream and receive an audio stream. In Half

Duplex mode the device only receives audio streams or transmits audio streams.

If MPEG1/2 is chosen, the device can only operate as audio stream receiver or as audio stream transmitter, but not simultaneously. This is Half Duplex (or Simplex) mode.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Supervision

The IP Audio Interface contains detectors for supervision of various functions of the device.

This way internal or external failures, disconnections or short circuits can be detected. Faults are reported via the Fault Relay and can be passed to partner devices.

Figure 6.8: Supervision screen (default)

Max. Internal temperature

Default: 80 °C

Enter the threshold for the Maximum Internal Temperature. If the set value is exceeded, a

Temperature Fault is generated and shown on the Status page, see Status page, page 39.

Min. Backup PWR voltage

Default: 0

Enter the value for the Minimum Backup Power Voltage.

If the voltage drops below the set value, a fault is generated and shown on the Status page,

see Status page, page 39.

Remote Supervision Period

Default: 0 seconds

Enter a value in the range 0 – 255 seconds. This is the time between consecutive pings to

supervised partners (checked as such in the Partner Table, see Partner Table, page 20).

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Supervision Sensor Mapping

Default: None

In the Supervision Sensor Mapping table you can select what actions should be taken if one of the faults occur that are in the table.

Options are: None, Local, Remote, Local and Remote.

None means that no action is taken when this fault occurs, except for indication on the

Status page, see Status page, page 39.

Local means that the fault is only indicated on the device itself.

Remote means that the fault is sent to and indicated on the partner devices.

Local and Remote means that the fault is indicated on both the device itself and the partner devices.

Faults that can be mapped are:

Control Inputs 1..8 fault. This fault can occur if the connections to one or more of the Control

Inputs are interrupted or shorted. Supervision should be enabled to detect this type fault, see

Control Input Mapping Table, page 29.

Temperature fault. This fault occurs if the set temperature is exceeded, see Supervision, page

27.

Backup Power fault. This fault occurs when the backup voltage drops below the set value, see

Supervision, page 27.

Main Power fault. This fault occurs when the main power supply becomes disconnected.

Condenser Microphone fault. This fault occurs when the connected condenser microphone becomes disconnected or fails. Supervision for the microphone input should be enabled, see

Audio Settings, page 24.

Dynamic Microphone fault. This fault occurs when the connected dynamic microphone becomes disconnected or fails. Supervision for the microphone input should be enabled, see

Audio Settings, page 24.

Pilot Tone fault. This fault occurs when no pilot tone is detected at Audio Input 2. Pilot Tone

supervision should be enabled, see Audio Settings, page 24.

Stream Loss fault. This fault occurs when the incoming data stream is lost, e.g. because the device became disconnected from the switch. A Stream Loss fault can only be Local, as there is no way to inform the partner devices, because of the disconnection.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Figure 6.9: Control Input Mapping Table screen (default)

Defaults: No/None

In the Control Input Mapping Table for each of the Control Inputs the Supervision can be enabled and a response defined.

If Supervision is enabled for an input, then two 10 kohm resistors should be connected at the

far end, close to the switch or relay that is triggering this input, see Multiple Unicast, page 14.

If Supervision is not enabled, then the input can be connected directly to a switch or relay, without resistors. The operation of the Control Input is the same, but no unintentional open or short circuits can be detected anymore, as these are interpreted as normal trigger signals.

Each Control Input activation can be use to activate one of the eight Control Outputs of the connected partner devices. Please note that this activation is edge triggered and not level triggered, so multiple Control Inputs can activate the same Control Output, but the Control

Output is de-activated as soon as one of Control Inputs is deactivated.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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6.2.9

Control Output Mapping Table

IP Audio Interface

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Figure 6.10: Control Output Mapping Table (default)

Defaults: Not Used/Normally Open

In the Control Output Mapping Table for each of the Control Outputs the activator (trigger) can be defined and the way the relay contact behaves.

Options for the Control Outputs are Not Used, Permanent, Remote, Remote & Audio Loss.

Permanent means that the Control Output contact is always Open or Closed, depending on the Contact Status.

Remote means that the Control Output contact is allowed to be activated by remote

actions of partner devices, see Control Input Mapping Table, page 29.

Remote & Audio Loss means that the Control Output contact is deactivated when the connection to one of the partner devices is lost.

In Contact Status you can set whether the Control Output is Normally open and will make

(close) on activation, or Normally Closed and will break (open) on activation.

The presence of a Pilot Tone on Audio Output 2 is considered to be special type of Control

Output. The Pilot Tone can be permanently or conditionally present or not.

Notice!

When both the main and backup power supplies are lost all contacts will be Open regardless of the settings. The Fault Relay contact will be Closed.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Serial (RS-232/RS-485)

This function is used for end-to-end serial data tunnelling with relatively low speed. This function is typically used for remote control, e.g. Pan/Tilt/Zoom control of a camera.

Figure 6.11: Serial (RS-232) screen default

Select either the RS‑232 or the RS‑485 port. Select the communication parameters as needed by the application and the connected devices. The serial parameters can be chosen independently at both ends of the communication. When tunneling, only the data is transmitted end to end, the RS‑232/RS‑485 control signals are only of local significance.

The serial input is automatically detected and the device supports both binary and formatted data streams.

All data received from the network in one IP packet will be transmitted in one block without framing, formatting or the addition of extra characters.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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6.2.11

IP Audio Interface

SNMP

The IP Audio Interface contains an SNMP agent that can report the device status information to a managing system using a Trap protocol operation.

The PRS‑1AIP1 IP SNMP provides fault information via the following branches:

The commonly defined and shared “MIB II”: iso(1).org(3).dod(6).internet(1).mgmt(2).mib-2(1)

The audio left and right channel states defined under the Barix branch at: iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).barix(17491).systems(2).

audio(1).states(1)

The Bosch specific branch (where the Bosch specific traps are assigned sequentially): iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).barix(17491).oem(10).

bosch(2)

The Bosch branch is further subdivided to define the supervised faults as data objects: prs1aip1(1).faults(1)

One trap is defined which shall deliver a 16 bit fault register value as an INTEGER and a fault reason as an enumerated INTEGER. This closely mimics the information found in the Config

View.

A formal definition of the required MIB is defined in BARIXOEMBOSCH.MIB which is provided as part of the release package on the CD.

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Figure 6.12: SNMP screen (default)

Trap Target IP Address

Default: 0.0.0.0

Enter the IP address of the SNMP trap destination.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

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Security

It is recommended to set a password to prevent unauthorized use of the CONFIGURATION,

UPDATE, STATUS and RESTART pages.

Figure 6.13: Security screen (default)

When a password is set for access to one or more of the available functions, the user will get a pop up window when accessing this function and has to enter the password into the password field of the pop up window. Additionally, a user name can be entered but this is not necessary.

Configuration/Update password

Default: not set

Enter up to 24 characters to protect the configuration and firmware updates pages of the device. Enter 25 characters to erase the current password. To log out click on the Logout button below the menu bar. On the Configuration and Update page only one user can log in at a time. Other login attempts will be refused.

Status Page View Password

Default: not set

Enter up to 24 characters to protect viewing the devices Status Page. Enter 25 characters to erase the current password. To log out click on the Logout button below the menu bar. On the

Status page several users can log in simultaneously.

Command/Reboot Password

Default: not set

Enter up to 24 characters to secure the Reboot page as well as the access to all control and command interfaces (WEB/CGI, Serial, TCP, and UDP). Enter 25 characters to erase the current password. To log out click on the Logout button below the menu bar. On the Reboot page only one user can log in at a time. Other login attempts will be refused.

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6.2.13

IP Audio Interface

SNMP Community RWrite

Default: not protected

Select the SNMP access rights for the Read and Write Community. You can select between:

not protected, Configuration/Update, Status Page View, Command/Reboot and no write access.

SNMP Community Read

Default: not protected

Select the SNMP access rights for the Read Community. You can select between: not

protected, Configuration/Update, Status Page View, Command/Reboot and no access.

Note that the Community RWrite setting takes priority. This means that if the Community

RWrite is set to not protected, Community Read is ignored.

Submit / Cancel button

Submit saves the set values, restarts the device and returns back to the last screen. Cancel restores the last submitted values.

Default settings

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Figure 6.14: Default settings screen

Default settings

Clicking Back to factory defaults button to restore the factory defaults (except Network configuration). During the restart a countdown screen will appear. Then the successful loading of the factory defaults is confirmed.

Hard default settings

To revert all settings (including the Network configuration) to factory defaults, the Reset button (1) has to be pressed for about 5..10 seconds while the device is powered.

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Configuration view

When clicking CONFIG VIEW in the selection bar at the top of the page, all configuration settings are shown, including hardware and software version information of the device:

– Device Information

– Version Information

– System Status

– Audio Status

– I/O Status

– Network Configuration

– Streaming Configuration

– Control Configuration

– Audio Configuration

– Supervision

– Serial Configuration

– SNMP Configuration

– Security Configuration

Figure 6.15: Configuration View example screen

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6.2.15

IP Audio Interface

Update

Click UPDATE on top of the web browser page to check and/or update the device firmware and CONFIGURATION pages. The already saved configuration parameters will not change at update.

Figure 6.16: Update example screen

Update kit

Unpack the zip file that contains the update kit and save it to a local drive. The update kit can be found on the supplied CD and/or Bosch Security Systems restricted download web page.

Click UPDATE on top of the page. The update page appears which shows the current device

HW/SW version and a link. See “Update example” screen” screen.

Click Please click here to start the update. A countdown screen appears and then the next update page. See “Update file selection” screen.

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Figure 6.17: Update file selection

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Click Browse and select the file named compound.bin inside the folder update_rescue. See

“Compound.bin selection” screen. Open this file.

Figure 6.18: Compound.bin selection

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Click Upload. See “File upload” screen. This process can take a few minutes. When completed, click Reboot.

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Figure 6.19: File upload

After a successful upload, the following text ...\compound.bin successfully loaded appears. See

“Upload confirmation” screen.

Figure 6.20: Upload confirmation

Then click Update and Reboot. Finally click Click here to reload the main page. The STATUS page appears.

Advanced Update

The link Advanced Update should only be used when requested. It allows for partial updates when the target address is known. Within this manual the Advanced Update function is not supported.

See also

Update, page 36

Operating Manual Bosch Security Systems B.V.

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