Sorama L642 User manual

L642
Acoustic Monitor
User Manual
Date of issue: 10/05/2022
Firmware version: 2.3.0

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Contents
Conformity .........................................................................................................................................3
Safety Information..............................................................................................................................4
Contacts .............................................................................................................................................5
1 Description..................................................................................................................................6
1.1 Features ..............................................................................................................................6
1.2 Available models .................................................................................................................7
1.3 System Overview.................................................................................................................8
2 Technical Data.............................................................................................................................9
2.1 Physical Properties ..............................................................................................................9
2.2 System Integration ..............................................................................................................9
2.3 Camera (for L642v and L642v+) ...........................................................................................9
2.4 Microphones .......................................................................................................................9
2.5 General ...............................................................................................................................9
3 Environment .............................................................................................................................10
3.1 Ambient Temperature.......................................................................................................10
3.2 Protection .........................................................................................................................10
4 Installation................................................................................................................................11
4.1 System Requirements........................................................................................................11
4.2 Connecting the L642..........................................................................................................12
4.3 Setting up the L642............................................................................................................14
4.4 Performing a firmware update...........................................................................................17
4.5 LED Indicator .....................................................................................................................19
4.6 General Mounting solution................................................................................................19
5 L642 Dashboard ........................................................................................................................21
5.1 Home Page........................................................................................................................21
5.2 Insight pages .....................................................................................................................22
5.3 Streaming page .................................................................................................................26
5.4 System Configuration ........................................................................................................27
5.4.2 Functionalities within this setup ........................................................................................27
5.5 Device Configuration Pages ...............................................................................................29
5.6 Management pages...........................................................................................................33
5.7 (API) Documentation .........................................................................................................39
6 Troubleshooting........................................................................................................................40

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Conformity
Sorama B.V.
Achtseweg Zuid 153H
5651 GW Eindhoven
The Netherlands
Declare under our sole responsibility that the products:
Product name
L642 Acoustic Monitor
Model number(s)
L642, L642+, L642v, L642v+
Are in conformity with the requirements of the following EU Directive or other normative
documents. This declaration is based on the full compliance of the products with the following
European standards:
-2014/30/EU For Electromagnetic compatibility directive (EMC)
▪EN 61000-6-3:2007+A1:2011
▪EN 61000-6-2:2005 + AC:2005
-RoHS3 Restriction of Hazardous Substances
▪EU2011/65/EU RoHS2
▪EU2015/863
Technical Compliance Data held by:
Sorama B.V.
Achtseweg Zuid 153H
5651 GW Eindhoven, NL
Signed for and on behalf of Sorama B.V.
Name: Rick Scholte, CEO
Address: Achtseweg Zuid 153H, 5651 GW, Eindhoven

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Safety Information
This document contains important information, which should be kept at all times with the instrument
during its operational life. Other users of this instrument should be given these instructions with the
instrument. Eventual updates to this information must be added to the original document. The
instrument can only be operated by trained personnel in accordance with these instructions and
local safety regulations.
This instrument is intended only for the measurement of sound and vibration. The instrument is
appropriate for continuous use. The instrument operates reliably in demanding conditions, as long as
the documented technical specifications for all instrument components are adhered to. Compliance
with the operating instructions is necessary to ensure the expected results.
Replacement Parts and Accessories
Only use original parts and accessories approved by the manufacturer. Using non original
replacement parts and accessories can compromise the operation safety and functionality of the
product. Misuse will void warranty.
To prevent possible electrical shock, fire, or personal injury follow these guidelines:
• Read all safety information before you use the product.
• Use the product only as specified in this manual.
• Do not use the product around explosive gases and vapor.
•Do not use the product if it is damaged.
• Do not use the product if it operates incorrectly.
• Do not apply more than the rated voltage.
• Incorrect wiring can damage the sensor and void the warranty. Before applying power, make sure
all connections are correct and secure!
• To prevent possible electrical shock, fire, or personal injury make sure that the sensor is grounded
before use.
• Only let an approved technician repair the product.
• The metallic enclosure of the sensor is not necessarily earthed by installation. At least one of the
following safety measures must be met to minimize the danger of electrostatic charges:
o Earth grounding of the cable shield
o Installing the unit’s metallic enclosure on an earth grounded mounting bracket or on any
other grounded bases
o Protect the operator from electrostatic discharge

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Contacts
The supplier will, during the warranty period in office hours (GMT +1), provide the required first line
support when technical faults occur. Customers can request support by sending an email to
[e-mail] or by calling [phone]. After receiving a detailed description of the
occurring error(s), Sorama will evaluate the problem. When the issue does not have any relations to
the services of Sorama or support is requested outside the warranty period, costs will be charged to
the customer.

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1Description
The Sorama L642 is the evolution in acoustic monitoring solutions. It combines the powerful use of
acoustic imaging, detection of sound levels, and accurate localization. The Sorama L642 supports
edge computing, all powered and connected with one single network cable.
The Sorama L642 can be used in a variety of application fields: safety & security, mobility,
environmental, and machine maintenance. The acoustic monitors can be easily connected to cover
larger areas with secure and GDPR proof data handling.
1.1 Features
•All in one acoustic monitoring
•Environmental noise monitoring
•Visual light camera integrated (L642V)
•Sound intensity mapping

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1.2 Available models
The following model variants from L642 series.
Sorama L642
Sorama L642+
Sorama L642V
Sorama L642V+
•64 MEMS
microphones
•Sunflower Array
•Jetson Nano
•Base API
Framework
•Sound Source
Detection API
•dB Values
•Localization
•64 MEMS
microphones
•Sunflower Array
•Jetson Xavier NX
•Base API
Framework
•Sound Source
Detection API
•dB Values
•Localization
•64 MEMS
microphones
•Sunflower Array
•Jetson Nano
•Base API
Framework
•Sound Source
Detection API
•dB Values
•Localization
•Integrated camera
•64 MEMS
microphones
•Sunflower Array
•Jetson Xavier NX
•Base API
Framework
•Sound Source
Detection API
•dB Values
•Localization
•Integrated camera

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1.3 System Overview

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2Technical Data
2.1 Physical Properties
Size (LxWxD)
170 x 170 x 65 mm
6.7 x 6.7 x 2.5 inch
Weight
0.85 kg
1.7Lb
Power
PoE+ port 100-240V AC,
max 37W; IEEE 802.3
Status LED red, green
2.2 System Integration
API
Open HTTP REST
Event Triggers
dB SPL or SoundSurfaces™
Threshold
Event Actions
Acoustic SoundSurfaces™
overlay
Output Protocols
Websocket and ModbusTCP
2.3 Camera (for L642v and L642v+)
Integrated visible light
Resolution video
720x1280
Aspect ratio
16:9
Camera Resolution
720p at 30fps
2.4 Microphones
Type
MEMS
Digital Bottom Port
SNR (A-weighted, at 1 kHz)
64 dB for 94 dB SPL
@ 1kHz
Sensitivity
-26 dBFS +/- 1.5dB
At 1 kHz, 94 dB SPL
Acoustic Overload Point
120 dB SPL
At 1 kHz, <10% THD
2.5 General
Ingress Protection
IP54
Operating Temperatures
-20 °C to 50 °C (4 °F to 122 °F)
Warranty
2-year

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3Environment
3.1 Ambient Temperature
The L642 is designed for ambient operating temperatures between -20°C to 50°C (4°F to 122°F). It is
necessary to verify the environmental temperature. Make sure to install the housing at a safe
distance of any nearby heating sources. Note that too cold water can cause condensation, which can
lead to damage in the device, the ambient operating relative humidity is between 10-100% RH(non-
condensing).
3.2 Protection
The L642 complies with the international protection standard IP54. For V & V+ versions, a protective
lens is attached. Please be aware that the L642 is not watertight but splash-proof. The effectiveness
against splashing under IP54 is possible only if the device is inspected periodically to inspect all seals
of the waterproof connectors.

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4Installation
The L642 series is an IP based device. A good reliable network and power infrastructure is the
backbone of every IP based solution, and the same applies to the L642 acoustic monitor. In the
installation you will first find the minimum requirements we prescribe to have the best operating
experience with the L642 acoustic monitor.
4.1 System Requirements
1. Power: The L642 is powered via Power over Ethernet (PoE) (IEEE 802.3af-2003). Only one
Cat5e or Cat6 network cable is needed for connecting a Listener. The L642 uses around 10-15
Watt of power. The power can be provided either via a PoE Switch or a separate PoE injector
to the L642. The L642(V)+ needs PoE+ (IEEE 802.3at-200) and uses up to 20 Watts of power.
2. Connection (Wired): The L642 can be connected to the network via one Cat5e or Cat6
network cable. In case of a fiber optic network a fiber to copper converter needs to be used to
connect the L642 to the network.
3. Connection (Wireless): In case of a wireless network requirement, the L642 can be connected
to the network using a Wifi, 4G or 5G router.
4. Throughput: The L642 uses about 3 Mbit/sec of data and the L642(V) uses up to 7 Mbit/sec
of data. (Note: the value is likely to be updated in the future)
5. Internet: The L642 does not need an active internet connection to function. However, if you
use the SoundSurface™page an internet connection is needed to load the google maps image.
6. Network requirements
1. Throughput: The L642 uses about 3 Mbit/sec of data for live SoundSurfaces™ and up
to 15Mbit/sec if also video is used (streaming page).
2. Broadcast/Multicast messages: The network, on which the L642 devices are
connected, has to support (or not block) broadcast messages. Broadcast messages
from the L642 are used to find them (mDNS protocol, ZeroConf). The ZeroConf uses
the following IP address: 224.0.0.251. Alternatively, the user can configure a static IP
to reach the unit, mDNS is not required then.
3. Used Ports: Communication to an L642 device is handled via ports 80, 443, 9011,
9012 and 9013.
Stability: The L642 device is able to recover from network failures. However, if a network is down for
a longer time, data might get dropped. The L642 buffers all data for at least 30 seconds. This data can
retroactively be retrieved.

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4.2 Connecting the L642
There are several modes in which you can connect the L642:
1. Mode 1: Connect to a Network using DHCP
2. Mode 2: Connect directly to a PC/Laptop using Auto IP
3. Mode 3: Connect to a Network using Static IP
4. Mode 4: Connect directly to a PC/Laptop using Static IP
🛈INFORMATION
When you get a new L642 device, it is configured so it can be connected in both mode 1 and 2
without any additional configuration.
If you want to configure the L642 to connect it in mode 3 or 4, you will first need to connect it in
mode 1 or 2 and change the configuration of the L642 via the dashboard as explained in section 4.3.
🛈INFORMATION
To power the L642, you need a PoE injector or PoE capable switch. The PoE switch detects if a device
needs PoE or not. The requirement is PoE+ for the L642+ and L642V+
⚠IMPORTANT
Firmware version 1.0.0 only supports Mode 1 connections.
Starting from firmware version 1.0.1, all 4 modes are supported.
4.2.1 Mode 1: Connect to a Network using DHCP
In mode 1, connect the L642 to a network which has a DHCP server available. Typically, the router of
your network runs a DHCP server, but this can also run in a server computer. Contact your network
administrator for more information about your particular network setup.
Connection can be made in two ways (note ‘+’ devices require PoE+):
1. Connect the L642 directly to a suitable PoE capable switch that is connected to the network
2. Connect the L642 via a suitable PoE injector to a non-PoE capable switch that is connected
to the network
The DHCP server will then automatically provide an available IP address to the L642 in the address
range that the network administer has configured. The devices that can communicate with the L642
(e.g. your PC/Laptop) need to be connected to the same network, either via a wired connection or a
wireless access point.

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4.2.2 Mode 2: Connect directly to a PC/Laptop using Auto IP
In mode 2, connect the L642 directly to a PC or Laptop.
Since ethernet ports on a PC/Laptop are (almost) never PoE capable, you will require a suitable PoE
injector. Connection can be made in two ways (note ‘+’ devices require PoE+):
1. Connect the L642 via a suitable PoE injector to a free ethernet port on your PC/Laptop
2. Connect the L642 via a suitable PoE injector to an ethernet-usb dongle plugged into your
PC/Laptop
The L642 will assign itself an IP address in the 169.254.0.0/16 range, also known as the Auto IP range.
4.2.3 Mode 3: Connect to a Network using Static IP
In mode 3, connect the L642 to any network (with or without DHCP server).
Connection can be made in two ways (note ‘+’ devices require PoE+):
1. Connect the L642 directly to a suitable PoE capable switch that is connected to the network
2. Connect the L642 via a suitable PoE injector to a non-PoE capable switch that is connected
to the network
A manually determined, fixed IP address can be assigned to the L642 via the Dashboard.
⚠IMPORTANT
Manually setting a static IP Address wrongly can lead to the device becoming unreachable. Make
sure you configure the device correctly or ask your network administrator for help.
4.2.4 Mode 4: Connect to a to a PC/Laptop using Static IP
In mode 4, connect the L642 directly to a PC or Laptop.
Since ethernet ports on a PC/Laptop are (almost) never PoE capable, you will require a suitable PoE
injector. Connection can be made in two ways (note ‘+’ devices require PoE+):
1. Connect the L642 via a suitable PoE injector to a free ethernet port on your PC/Laptop
2. Connect the L642 via a suitable PoE injector to an ethernet-usb dongle plugged into your
PC/Laptop
A manually determined, fixed IP address can be assigned to the L642 via the Dashboard.
⚠IMPORTANT
Manually setting a static IP Address wrongly can lead to the device becoming unreachable. Make
sure you configure the device correctly or ask your network administrator for help.

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4.3 Setting up the L642
Before you start:
-Make sure the L642 is connected with your PC/Laptop in either mode 1 or mode 2 as
described in section 4.2
-Wait until the indicator light (on the side of the L642) becomes solid green.
Step 1
Keep the serial number of the L642 ready. The serial number can be found on the back of the device
at the bottom-left.
Step 2
Open your web browser (Chrome, Firefox, Edge, Safari)
Step 3
Type http://<serial number> in your address bar. E.g. http://100110001
If your network does not have DNS server or if you connected the device directly to your PC add
.local at the end of the serial number address. e.g. http:// 100110001.local
Step 4
Your browser will now show the device dashboard and prompt you to login. The default credentials
are:
Username: admin
Password: admin
http://100110001

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Step 5
In the device dashboard go to the “Device Configuration” page and click on Device Information
Step 6
Set the device coordinates and relevant installation information such as angles and target distances
(if known)
Step 7
Go back to the “Device Configuration” page and click on Networking.
http://100110001
http://100110001
http://100110001
http://100110001

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Step 8
In the Network page set the preferred network settings according to your project.
⚠IMPORTANT
Firmware version 1.0.0 only supports DHCP.
Starting from firmware version 1.0.1, DHCP, Auto IP and Static IP are all supported
Select “Obtain IP address via DHCP / Auto IP” (the default) if you want to run the L642 in either mode
1 or 2 as described in section 4.2. No additional configuration is required.
Select “Use a Static IP address” if you want to run the L642 in either mode 3 or 4 as described in
section 4.2. You will need to specify the following:
•IP address: The static IP address that the L642 should use
•Subnet mask: The subnet mask of the network the L642 is (going to be) connected to
•Gateway: The gateway address of the network the L642 is (going to be) connected to
•Primary and Secondary DNS Address: The IP addresses of the primary and secondary DNS
server on the network.
After the device has been configured, you will need to reload your browser window since the IP
address of the L642 has changed. Depending on your network setup and the values you have
entered, you might also need to change the configuration of your network adapter before you can
reach the L642 again. Ask your network administrator for assistance.
🛈INFORMATION
Currently all values need to be specified. If you do not need one of the values, just leave it at the
default setting. If you don’t know what these settings mean, contact your network administrator.
⚠IMPORTANT
Manually setting a static IP Address wrongly can lead to the device becoming unreachable. Make
sure you configure the device correctly or ask your network administrator for help.
http://100110001

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4.4 Performing a firmware update
Before you start:
The following steps assume you have already completed the device setup as described in section 4.3,
and can access the device dashboard.
Step 1
In the device dashboard go to the “Device Configuration” page and click on Firmware Update.
Step 2
On the Firmware Update page, click “Click here to select a file”. A file selection menu will appear.
Step 3
Select the firmware file from the file selection menu and click “Open”.

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Step 4
Click “Upload Firmware”. A popup window will appear asking you to confirm, click “OK”.
Step 5
First, the file will be uploaded to the device. The progress bar indicates the progress of the upload.
Second, the device will install the new firmware, this can take between 1 and 5 minutes. The
progress bar will keep animating during this process.
When the firmware update is complete, the progress bar turns green. The device will now be reset.
Wait until the led on the device turns green again, then refresh the dashboard and you can start
using the device with the new firmware.

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4.5 LED Indicator
The LED indicator is a small semi-transparent dot (powered off) on the side of the L642.
Color:
state:
Function
Red
Solid
Starting or error state
Green
Solid
Ready
4.6 General Mounting solution
L642 has three main ways to be placed in the environment. No matter the mounting choice, we advise
to make use of the Vesa 10 mounting on the back of the unit.
4.6.1 Pole mounted
Sorama has a pole mounting bracket available that can be ordered as a separate accessory which can
be connected to a pole mount adapter.
The orientation should be such that the RJ45 connector of the L642 is facing the pole.

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4.6.2 Wall mounted
Sorama has a 45 degree wall mounting bracket available that can be ordered as a separate accessory.
The orientation should be so that the RJ45 connector points to the wall.
4.6.3 Mounting height
The mounting height is depending on your situation and differs from area to area. In general, the
distance to the area being measured should be:
•Minimum of 4 meters.
•Maximum of 15 meters.
•Outside of these bounds the system will not be able to properly monitor the whole area.
•Inside of these bounds, the area that can be monitored approximately equals twice the
mounting height. Example:
oThe L642 mounted at 4 meters high can cover an approximate area of 8x8 meters.
oThe L642 mounted at 8 meters high can cover an approximate area of 16x16 meters.
oThe L642 mounted at 15 meters high can cover an approximate area of 30x30
meters.
⚠IMPORTANT
No other holes should be drilled in the housing as this will affect the water-resistance capabilities
of the device or worse damage the electrical components inside.