831-INT Manual
831-INT & 831-INT-ET
831 Docking Station
Manual
Larson Davis
831-INT & 831-INT-ET
Docking Station
Manual
I831.04 Rev H
Copyright
Copyright 2017 by PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved. The
manual may not be copied in whole or in part for any use without prior written consent of PCB
Piezotronics, Inc.
Disclaimer
The following paragraph does not apply in any state or country where such statements are not
agreeable with local law:
Even though PCB Piezotronics, Inc. has reviewed its documentation, PCB Piezotronics, Inc. makes no
warranty or representation, either expressed or implied, with respect to this instrument and
documentation, its quality, performance, merchantability, or fitness for a particular purpose. This
documentation is subject to change without notice, and should not be construed as a commitment or
representation by PCB Piezotronics, Inc.
This publication may contain inaccuracies or typographical errors. PCB Piezotronics, Inc. will
periodically update the material for inclusion in new editions. Changes and improvements to the
information described in this manual may be made at any time.
Record of Serial Number and Purchase Date
831-INT(-ET) Serial Number: ___________ Purchase Date: ___________
831-INT-ET MAC Address: ________________
Recycling
PCB Piezotronics, Inc. is an environmentally friendly organization and encourages our customers to
be environmentally conscious. When this product reaches its end of life, please recycle the product
through a local recycling center or return the product to:
PCB Piezotronics, Inc.
Attn: Recycling Coordinator
1681 West 820 North
Provo, Utah, USA 84601-1341
where it will be accepted for disposal
Warranty
For warranty information, refer to our Terms and Conditions of Sale on our website
www.larsondavis.com/TermsConditions.aspx.
I831.04 Rev H
Chapter 1
Chapter 2
Introduction
1-1
Overview ...............................................................................................................
Features ............................................................................................................
Standard Accessories ............................................................................................
Optional System Accessories................................................................................
1-1
1-2
1-3
1-4
Assembly and Configuration
2-1
Electrical Connection Overview ........................................................................... 2-1
Battery Connection........................................................................................... 2-5
Router Battery Connection............................................................................... 2-7
Assembly Diagram................................................................................................ 2-9
Internal Jumpers .................................................................................................. 2-10
Battery Charger .............................................................................................. 2-11
Battery Temperature Sensor........................................................................... 2-11
Watchdog ....................................................................................................... 2-12
Embedded Computer Enable.......................................................................... 2-13
Fuses.................................................................................................................... 2-13
Placement of Model 831 ..................................................................................... 2-15
Mounting 831-INT in an EPS031 or EPS043 ..................................................... 2-16
Configuring Routers for 831-INT-ET................................................................. 2-17
Chapter 3
Operation
3-1
Status Indicators ....................................................................................................
Mains Power/External 15V DC Power ............................................................
Battery Charger Status .....................................................................................
System On Status .............................................................................................
USB Status .......................................................................................................
831-INT-ET Operation .........................................................................................
Proper Shutdown Method.................................................................................
Connecting to Model 831 through 831-INT-ET using G4 LD Utility..................
Connecting to Model 831 through 831-INT-ET using SLM Utility-G3 ..............
Battery Charger Operation ....................................................................................
Solar Power Operation ..........................................................................................
System SLA Battery Capacity and Run-time .......................................................
3-1
3-1
3-2
3-2
3-3
3-3
3-4
3-4
3-5
3-6
3-8
3-8
Appendix A Technical Specifications
A-1
Physical Characteristics ........................................................................................ A-1
Environmental Specifications ............................................................................... A-1
831-INT-ET Docking Station with Ethernet......................................................... A-3
I831.04 Rev H
USB HUB ............................................................................................................. A-3
Outdoor Microphone System................................................................................ A-3
Battery Charger..................................................................................................... A-5
Battery Connector................................................................................................. A-5
Logic I/O & Auxiliary Power Connector ............................................................. A-6
Power Specification .............................................................................................. A-8
Power Consumption for Model 831, 831-INT, 831-INT-ET and Accessories A-8
Mains Power .................................................................................................... A-9
PSA030 Power Adapter ................................................................................... A-9
Battery............................................................................................................ A-10
Internal Charger ............................................................................................. A-10
Other Electrical Characteristics ..................................................................... A-11
Appendix B Troubleshooting
I831.04 Rev H
B-1
CHAPTER
1
Introduction
This chapter summarizes the features and accessories of the
831-INT and 831-INT-ET.
Overview
The information presented for the
831-INT is applicable to both 831INT and 831-INT-ET.
The Larson Davis 831-INT is a companion product to the
Model 831 Sound Level Meter that adds functionality
needed for outdoor noise monitors. The 831-INT-ET
includes functionality to support Ethernet communication.
It also enhances the capabilities of the Model 831 to include
interfaces for components of a permanent noise monitoring
system. Figure 1-1 shows the 831-INT-ET.
FIGURE 1-1 831-INT-ET
Introduction
Overview
1-1
Features
Outdoor Microphone Preamplifiers
•
Provides power and control signals for the 426A12 and
PRM2103 outdoor microphone preamplifiers.
•
Backup battery management and charge control.
•
Connection for up to two 12 V sealed lead-acid (SLA)
batteries using removable screw terminal connectors.
•
Integrated multi-stage charger for SLA batteries.
Efficient Switch-Mode Power Supply circuitry used to
reduce heat and improve reliability.
•
Automatic low battery shutdown prevents battery
damage.
•
Automatic power up when battery is charged sufficiently
by Mains power or solar-powered charger.
•
Mains power with automatic switch over to battery
power when mains power fails.
•
Support for solar power.
•
LED Indicators:
Battery Management
Power Management
1. Mains Power On.
2. Charger Status.
3. System Power Status, including shutdown status and
low battery status.
4. USB Hub Power On.
•
Mains power, provided by the PSA030 power supply.
•
Automatic power up with Mains power restoration.
•
Independent watchdog systems in both the Model 831
meter and the embedded computer in the 831-INT-ET
will restart the system in the event of system fault.
•
Quick SBC power on timing.
•
USB hub power (and USB devices deriving power from
the Hub) is turned on or off as needed by the Model 831
for efficient power management.
•
4-port powered USB hub for peripherals.
USB Hub
1-2
Overview
Introduction
•
Directly power devices such as:
- SEN031: weather station.
- COM-RV50-DC-U/E: Wireless Ethernet Gateway.
- DVX011: USB to serial adapter.
- GPS001: GPS receiver.
Digital Input/Output
•
2 digital I/O control lines (1 in, 1 out).
•
831-INT-ET provides an RJ45 Ethernet connector for
broadband, Internet connection. This provides:
Internet Connection
- Faster communication speed.
- Remote firmware upgrade.
- Real-time streaming of data.
Mounting
•
Compact design cradles the Model 831 and provides for
mounting.
Standard Accessories
The 831-INT is delivered with the following accessories:
• PSA030: Power Supply.
• CBL159: USB A to Mini-B USB cable, (2 provided).
• 1/4"-20 x 5/8" Stainless Steel Thumb Screw with spacer
and washer for mounting the 831-INT to a panel.
• Screw Driver.
• 5-position pluggable screw terminal, (2 provided).
• I831.04: 831-INT and 831-INT-ET User Manual.
Introduction
Standard Accessories
1-3
Optional System Accessories
The 831-INT is an accessory of the Model 831 Sound Level
Meter that, when combined with the following accessories,
form the core of a noise monitoring system.
Sound Level Meter
• Model 831: Sound Level Meter.
Outdoor Microphone Preamplifiers
• 426A12: Outdoor Microphone Preamplifier.
• PRM2103-FF Outdoor Microphone Preamplifier.
Environmental Enclosure
•
EPS031: Small environmentally protected, pole
mountable enclosure for AC mains power, with 9 AH
battery, which supports the Model 831, 831-INT and
accessories.
•
EPS043: Large environmentally protected, pole
mountable enclosure for AC mains power, with 9 AH
battery, which supports the Model 831, 831-INT and
accessories.
Sensors
• SEN031: Vaisala WXT520 multi-metric weather station.
GPS Receiver
• GPS001: GPS Receiver, provides location and time
synchronization.
Communication Devices
• COM-RV50-DC-U/E: Raven XE G3 Ethernet Gateway
with DC power cable.
Signal/Control Cables
• CBL152: Signal Cable, 426A12 to 831-INT, 20 ft (6m).
• CBL153: Control Cable, 426A12 to 831-INT, 20 ft (6m).
• CBL167: Cable for SEN031 weather station. Connects to
the Model 831 through 831-INT with DVX008A.
Battery Cables
• CBL147: 831-INT Single Battery Connection, 2 ft
(0.6m).
• CBL149: Cable 831-INT to Battery, 12 ft (3.7m).
1-4
Optional System Accessories
Introduction
Introduction
•
CBL160: Cable connecting 831-INT to solar charger, 2
ft (0.6m).
•
CBL161: Cable for 100 AH battery to solar charger, 10
ft. (3m).
Optional System Accessories
1-5
1-6
Optional System Accessories
Introduction
CHAPTER
2
Assembly and Configuration
This chapter provides the 831-INT assembly information
necessary for configuring the device.
Electrical Connection Overview
The following figures and tables describe the electrical
connections available on the 831-INT.
FIGURE 2-1 Connection Block Diagram
Assembly and Configuration
Electrical Connection Overview
2-1
FIGURE 2-2 831-INT with Model 831: Right Side View
831-INT Connector
Usage
Cable
USB PORTS 1 and 2
gateway, GPS
Direct connect or USB Cable
AUX POWER &
LOGIC I/O
Provides power for auxiliary
devices, switch and indicator
light, SEN031 Weather
station, and Sierra Wireless
RV50.
CBL167 for SEN031 weather
station, otherwise user
supplied.
EXTERNAL CHARGER
External Battery Charger
input, optional1
BATTERY
One or two, 12-volt sealed
lead acid batteries
1
CBL147 or CBL149. See
“Battery Connection” on
page 2-5
In the event that a charger with more capacity is needed
Table 2-1 Connections to 831-INT or 831-INT- ET: Right Side
2-2
Electrical Connection Overview
Assembly and Configuration
FIGURE 2-3 831-INT with Model 831: Top End View
Model 831 and 831-INT
Usage
Cable
Mains Power
PSA030 15 VDC Power Supply
Included with PSA030
Preamp Control
426A12 or PRM2103-FF
Outdoor Microphone
Preamplifier Control connector
CBL153 (426A12) or
CBL208 (PRM2103-FF)
Model 831 Preamplifier
(nose cone)
426A12 Outdoor Microphone
Preamplifier Signal connector
CBL152 Signal Cable
Table 2-2 Connections to 831-INT and Model 831: Top End
Assembly and Configuration
Electrical Connection Overview
2-3
FIGURE 2-4 831-INT-ET with Model 831: Left Side View
831-INT Connector
Usage
Cable
USB HUB INPUT
Connect CBL159 between USB
HUB INPUT and the Model 831
USB host connector labeled
AUX
CBL159
USB Ports 3 and 4
SEN031 Weather Station, etc.
CBL167 for SEN031
weather station
Table 2-3 Connections to 831-INT or 831-INT- ET: Left Side
2-4
Electrical Connection Overview
Assembly and Configuration
831-INT-ET
Connector
Usage
Cable
USB A
Not used.
USB B
Connect CBL159 between USB
B and USB Connector on 831
CBL159
Ethernet
Network Device
CAT5e or CAT6
Shielded Network
cable
Table 2-4 Connections available with 831-INT-ET
Battery Connection
There are two cables available for connecting the batteries to
the 831-INT.
Single Battery
The CBL147 is used with a single battery such as the
BAT014, a 9 AH sealed lead acid battery. The CBL147 uses
a 3AG 4A Slo-Blo Littelfuse (p/n 0313004.HXP).
FIGURE 2-5 CBL147
Underground Battery EPS035
The EPS035 is an underground vault/enclosure with a 100
AH deep cycle sealed lead acid battery which is usually used
Assembly and Configuration
Electrical Connection Overview
2-5
with permanent solar powered installations. The CBL149,
which is 12 feet long and has a remote battery temperature
sensor, is designed for use with this battery. The CBL149
uses a 3AG 4A Slo-Blo Littelfuse (p/n 0313004.HXP.
)Figure 2-6 shows CBL149.
.
FIGURE 2-6 CBL149
It is possible to utilize a temperature
sensor inside the 831-INT instead of
the temperature sensor included with
the cable. See “Battery Temperature
Sensor” on page 2-11. for further
detail.
To achieve good performance and long battery life, the
charging of the battery can be optimized by monitoring the
battery temperature. Attach temperature sensor to the battery
by peeling off backing material and pressing adhesive
coated side of sensor to the side or top of the battery.
The 831-INT is delivered with
internal temperature compensation
enabled for use with CBL147.
Set the internal controls to use the External Temperature
Sensor. See “Battery Temperature Sensor” on page 2-11 for
more details.
Solar Charger Cables
The CBL160 is used to connect power between a solar
charger and the 831-INT. CBL161 is used to connect the
solar charger to the batteries.
2-6
Electrical Connection Overview
Assembly and Configuration
FIGURE 2-7 CBL160 Cable to Solar Charger
FIGURE 2-8 CBL161 Cable 100 AH Battery to Solar Charger
Router Battery Connection
A Sierra Wireless RV50, GX450, and LS300 can be
connected to the 831-INT-ET as a power source by using a
DC cable as shown in FIGURE 2-9 Router DC Cable
Connection. The Ethernet cable will need to be inserted to
finish the router’s connection to the 831-INT-ET.
Assembly and Configuration
Electrical Connection Overview
2-7
AUX POWER
BATTERY
DC
Power
FIGURE 2-9 Router DC Cable Connection
2-8
Electrical Connection Overview
Assembly and Configuration
Assembly Diagram
FIGURE 2-10 831-INT Exploded Assembly
Assembly and Configuration
Assembly Diagram
2-9
Internal Jumpers
The 831-INT has jumpers that are used to enable or disable
831-INT features, including the following:
•
Watchdog timer for automatic reset if failure occurs
•
External temperature sensor for improved battery
charging
•
Built in lead acid battery charger
To gain access to these jumpers, do the following:
WARNING! Do not remove the
power from the 831-INT before
properly shutting down the Model
831 and then waiting for the green
SYSTEM ON LED to stop flashing,
see“Proper Shutdown Method” on
page 3-4
•
Shut down the Model 831 and remove all cables,
including the power cable.
•
Remove the Model 831 from the 831-INT.
•
While doing the rest of this operation, ensure to follow
good electrostatic discharge (ESD) practices. First touch
metal that is known to be grounded. Then touch a bare
metal part of the 831-INT before opening up the case.
•
Remove the small rubber o-ring that is found on the long
captured the Model 831 retaining screw.
•
Remove retaining screw by pulling it out as far as it can
go and then unscrewing it out of the top case.
•
Remove the upper four screws of the 831-INT with a
Phillips screw driver.
•
Remove the 831-INT's upper cradle and top case metal
pieces.
This gives access to the 831-INT's circuit boards.
When the assembly is put back together, take care to ensure
that the grounding tabs on the circuit board make contact
with the inside wall of the enclosure, and that these tabs do
not get crushed or deformed in the process. It is helpful to
push them into the enclosure with a screwdriver, while
placing the top enclosure case on.
2-10
Internal Jumpers
Assembly and Configuration
Battery Charger
When using solar power or an external charger, the internal
charger should be disabled.
P4
Charger Enabled (default)
P4
Charger Disabled (optional)
Place P4 jumpers as shown to enable internal charger.
Remove the jumpers from both pin pairs of P4 to disable the internal charger.
This will permit the use of an external charger or solar charger to directly
charge the battery. Keep the jumpers in a secure place so that they are handy if
operation needs to be changed later. They can be placed on the side pins for
safe keeping (as shown below).
Table 2-5 Internal Battery Charger Enable
Battery Temperature Sensor
The 831-INT supports temperature compensated charging
for 12V sealed lead-acid batteries. An internal sensor
provides temperature compensation without physically
contacting the battery and offers reasonable temperature
compensation when the battery and the 831-INT are in close
proximity (in the same enclosure). For this internal
temperature compensation configuration use battery
connector cable CBL147.
Assembly and Configuration
Internal Jumpers
2-11
For batteries using the CBL 149, use the External Battery
Temperature Sensor configuration.
P3
Internal Battery Temperature Sensor (default)
Select the temperature sensor that is internal to the 831-INT by
placing a jumper on the top pin pair of P3 as shown. The bottom
jumper is a spare.
P3
External Battery Temperature Sensor (optional)
Select the temperature sensor that is attached to the battery by placing
a jumper on the middle pin pair of P3. The bottom jumper is a spare.
Used with CBL149
Table 2-6 Select Battery Temperature Sensor
Watchdog
Caution: Remove the AA batteries
from the Model 831 for proper
functioning of the watchdog.
For a description of the watchdog function, see “Watchdog
Cycle Time:” on page A-12.
P2
Watchdog Enable (default)
P2
Watchdog Disable
The watchdog will cycle the power to the Model 831 off and on in the
event that the Model 831 stops responding to the 831-INT for a period
of 12 minutes. The watchdog is enabled when the upper right pins of
P2 are connected by a jumper as shown in the figure and the bottom
right pin remains open.
The watchdog is disabled when the bottom right two pins are
connected by a jumper and the upper right pin is open as shown in the
figure.
Table 2-7 Watchdog on 831-INT Circuit Board
2-12
Internal Jumpers
Assembly and Configuration
Embedded Computer Enable
This jumper is factory set and should not require
modification.
P2
SBC in 831-INT-ET is enabled.
P2
No SBC unit (default) is configured as 831-INT.
Table 2-8 Configuration for 831-INT/831-INT-ET
Fuses
All fuses listed below are Littelfuse p/n 0454003, Slo-Blo
125V 3A or equivalent, unless otherwise noted.
•
F2 - Preamplifier Fuse (Littelfuse 0453.500MR, very fast
acting, 0.5 A, 125V)
•
F6 - External Charger Fuse
•
F7 - Fuse for battery #1
•
F8 - Fuse for battery #2
•
F9 - Fuse from mains power to primary circuit board and
internal SLA charger
•
F10 - Fuse for Model 831, USB hub, and embedded
computer when configured for a 831-INT-ET
See FIGURE 2-11 for locations of these fuses on board.
Assembly and Configuration
Fuses
2-13
FIGURE 2-11 831-INT Circuit board
2-14
Fuses
Assembly and Configuration
Placement of Model 831
When properly inserted, the screw
will align with the Model 831 battery
door security nut.
Caution: For proper watchdog
operation, remove the AA batteries
within the Model 831.
The Model 831 slides in between the two vertical guide
plates on the sides of the 831-INT as shown in FIGURE 212.
FIGURE 2-12 Model 831 Placement
Hold the 831-INT in one hand, in such a manner that the
retaining screw which will secure the Model 831 to the 831INT drops into the retracted position below the upper
surface of the 831-INT.
With the other hand, slide the Model 831 between the two
vertical guide plates, back end (with connectors) first and
press until the electrical connector on the end plate is aligned
and inserted firmly into the I/O Connector of the Model 831.
From beneath the 831-INT, manually tighten the retaining
screw to secure the Model 831 firmly onto the 831-INT.
Removal of Model 831
Turn off the Model 831 prior to disconnecting from the
831-INT.
When removing the Model 831 from the 831-INT, the
Model 831 must be kept out of the cradle for at least 5 - 10
seconds before re-inserting to have the automatic power-on
feature work properly.
Assembly and Configuration
Placement of Model 831
2-15
Mounting 831-INT in an EPS031 or EPS043
A 1/4-20 x 5/8” stainless steel thumb screw with spacer and
washer is provided with the 831-INT for mounting it to a
panel. Screw into the threaded insert on the back of the 831INT as shown in FIGURE 2-13. Ensure that the convex side
of the curved washer is facing towards the 831-INT.
FIGURE 2-13 Placement of Stainless Steel
Mounting Hardware
The 831-INT is then suspended from a mounting plate
which has a key hole at the top to engage the thumb screw as
shown in FIGURE 2-14. When the 831-INT is positioned
properly, tighten the thumb screw securely.
FIGURE 2-14 Mounting of 831-INT
2-16
Mounting 831-INT in an EPS031 or EPS043
Assembly and Configuration
Configuring Routers for 831-INT-ET
Overview
The 831-INT-ET enables the Model 831 to communicate
using broadband network technology.
The 831-INT-ET is designed to be placed on a private
network with access to the Internet through a router. The
831-INT-ET ships pre-configured to support DHCP
addressing, allowing the 831-INT-ET to work in a typical
private network. To allow the 831-INT-ET to be accessible
from the Internet, port forwarding needs to be set up in the
router and the DHCP server configured to provide a reserved
address to the 831-INT-ET. You will also need to configure
your firewall to allow the required ports.
Proper installation will require someone familiar with router,
DHCP, and firewall configuration, who also has
administrative rights for these devices.
Assembly and Configuration
Configuring Routers for 831-INT-ET
2-17
Configuration
A typical network configuration is shown in Figure 2-15.
FIGURE 2-15 Typical Network Configuration
2-18
Configuring Routers for 831-INT-ET
Assembly and Configuration
Viewing the Private IP Address
If the DHCP is not found, see “The
IP Address on Model 831 is not
shown.” on page B-6.
You can view the private IP address of the Model 831 when
connected to the 831-INT-ET by pressing the Tools button
on the meter and selecting Communications. Figure 2-16
shows the Network tab in Communications:
The private IP address shown on the
meter is not automatically mapped to
the public IP address for your
organization’s network; therefore,
network connectivity will require the
assistance of your IT professional.
FIGURE 2-16 Private IP Address
Router Configuration
The 831-INT-ET MAC address is needed to configure the
router for DHCP. The MAC address is located on the back
label of the 831-INT-ET (see FIGURE 2-17). After
configuring the router for the 831-INT-ET, use the IP
address or host name and port number that is needed in order
to connect the G4 LD Utility software to the Model 831
through the 831-INT-ET via Ethernet. For proper
functionality, configure the router as follows:
1.
Assembly and Configuration
Use a static IP address for the Internet side of the router.
This is the address to which you will communicate with
the Model 831 using G4 LD Utility or other software.
To get a static IP address, request one from your network service provider.
Configuring Routers for 831-INT-ET
2-19
For Secure Sockets Layer (SSL)
security, use TCP/IP port 443, which
requires a password.
2.
The private side of the router should support DHCP.
This is a common feature found on almost all routers. If
devices other than the 831-INT-ET are connected to the
client side of the router, the DHCP server in the network
adapter should be configured to always provide the
same IP address to the 831-INT-ET. This is done by
configuring a reserved IP address for the MAC address
found on the label on the 831-INT-ET.
3.
The router needs to be configured to port forward from
the static address (Internet side) to the 831-INT-ET. The
default TCP/IP ports are 2001, 80, or 443, which need
to be forwarded and also allowed through any existing
firewall.
FIGURE 2-17 831-INT-ET MAC Address
2-20
Configuring Routers for 831-INT-ET
Assembly and Configuration
CHAPTER
3
Operation
This chapter provides a description for properly operating
the 831-INT with the Model 831 sound level meter.
Status Indicators
When operating the 831-INT and
Model 831 sound level meter, ensure
that the meter is properly shut down
before disconnecting power from the
831-INT. Otherwise, the resulting
improper shutdown may corrupt the
flash memory in the Model 831 or
831-INT-ET.
The 831-INT provides four LEDs to indicate status. They
are as follows:
•
Mains Power (MAINS PWR)
•
Battery Charger Status (CHARGE)
•
System On Status (SYSTEM ON)
•
USB Status (USB HUB)
Figure 3-1 shows the location of the status indicators.
USB HUB
MAINS PWR
SYSTEM ON
CHARGE
FIGURE 3-1 LED Status Indicators
Mains Power/External 15V DC Power
The green MAINS PWR LED is illuminated when the
external supply is greater than 13.8 volts. Connect the
PSA030 power supply to the Mains Power connector to
power the 831-INT, an attached Model 831, and charge
optional batteries. The mains or battery voltage can be read
on the Model 831 display (refer to the Model 831 Manual).
Operation
Status Indicators
3-1
Disconnecting 831-INT from the Model 831
Shut off the instrument properly. An
improper shut down or abrupt power
loss can result in corrupted or
damaged flash memory.
Turn off the Model 831 prior to disconnecting the 831-INT
from the Model 831.
Battery Charger Status
The Model 831 internal battery charger status is indicated by
the red CHARGE status LED, shown in FIGURE 3-1:
•
Illuminated, steady: Rapid charging
•
Illuminated, winking: Float charging
•
Slow flashing: Low battery recovery
•
Fast flashing: Fault, thermistor or no battery
•
Not Illuminated: Charger Off
System On Status
WARNING! When turning off the
Model 831 sound level meter, wait
until the green SYSTEM ON LED
has finished flashing quickly and has
turned off before disconnecting
power from the 831-INT. See
“Proper Shutdown Method” on
page 3-4.
Instrument
3-2
The green SYSTEM ON status LED indicates the system is
supplied with power either by the battery or by the Mains
Power connector.Table 3-1 indicates the states for this LED:
LED Indication
State
831-INT
ON, with two blinks
per meter heart-beat
On with normal power
831-INT-ET
ON, with alternating
fading and brightening,
according to the pace
of heartbeats from the
meter or SBC**
On with normal power
Status Indicators
Operation
Instrument
LED Indication
State
831-INT or 831-INTET
Flashing quickly
Model 831 has been turned
off and SBC is shutting
down (do not disconnect
power in this state)
831-INT or 831-INTET
Flashing quickly for
two minutes
Power shut off is imminent
due to watchdog
831-INT or 831-INTET
Flashing quickly
Low battery shut off is
imminent
831-INT or 831-INTET
Flashes once every
second
Forced power off
831-INT or 831-INTET
Flashes once every
four seconds
Model 831 and SBC are in
normal power off
831-INT or 831-INTET
Flashes once every
eight seconds
Low battery shutoff (will
turn on when battery recovers 12.5 V or more or if
mains power is connected)
**The number of minutes since the last heartbeat from either the Model 831 or the SBC determines the number of seconds that the LED stays on in this mode before fading. For example, a
heartbeat once per minute is indicated by the LED staying lit one second before fading.
Table 3-1 System On LED States
USB Status
When the USB Host port is On, the green USB HUB LED
shown in FIGURE 3-1 will be illuminated.
The USB Host port power is controlled by the Model 831.
See the Model 831 manual for more details.
831-INT-ET Operation
WARNING!Connect all cables to
the 831-INT-ET prior to powering
ON.
Operation
The SBC in the 831-INT-ET will boot up with the following
sequence:
1.
The green SYSTEM PWR LED will turn on.
831-INT-ET Operation
3-3
2.
3.
4.
If mains power is being used, the green MAINS PWR
LED will turn on.
The Ethernet status LED's (green and orange) will
initially be off, but will eventually come on and stay on.
They will flicker at the presence of data traffic.
A few minutes after power on, the SBC will be ready
for remote communications to the Model 831 through
Ethernet connections.
Proper Shutdown Method
If the 831-INT-ET is not properly shut down, damage may
occur to the system. To shut down safely, follow these steps:
Step 1
Power Off the Model 831.
Step 2
Red mains power LED will turn on.
Step 3
Wait until the red mains power LED light goes
dark.
Step 4
You can now disconnect the 831-INT-ET or cables
safely.
Connecting to Model 831 through 831-INT-ET
using G4 LD Utility
To establish a TCP/IP type connection from G4 LD Utility
(G4) software to the Model 831 through the 831-INT-ET,
follow these steps:
For information on the 831-INT-ET’s
IP Address see “Configuring
Routers for 831-INT-ET” on page 217
Specify port numbers 80 or 2001. If
using Secure Sockets Layer (SSL)
security, enter port number 443,
which requires a password.
3-4
Step 1
Connect a router via Ethernet cable to the 831INT-ET.
Step 2
Power the Model 831 ON.
Step 3
Launch G4 LD Utility on a PC, click Connect.
Step 4
Select 831 and TCP/IP options. Then press Add
Meter, a new empty meter line will appear. See
FIGURE 3-2 "G4 LD Utility Connect to Meter"
Step 5
Enter the following information into the row:
Connecting to Model 831 through 831-INT-ET using G4 LD Utility
Operation
• Name (not required)
• IP Address
• Port number
• Password (if applicable)
Step 6
Click Connect.
FIGURE 3-2 G4 LD Utility Connect to Meter
Connecting to Model 831 through 831-INT-ET
using SLM Utility-G3
To establish a TCP/IP type connection from the SLM
Utility-G3 software to the Model 831 through the 831-INTET, follow these steps:
Step 1In SLM Utility-G3, click Connection > Remote >
Internet. This will bring up the Remote Internet Site
connection box. (See FIGURE 3-3.)
Step 2
Operation
Enter the host name of the router or the public IP
address for the 831-INT-ET IP address and also
the port number. When configured as described in
this manual, the IP address or host name of the
Model 831 is the public address of the router. For
more information on this see “Configuring
Routers for 831-INT-ET” on page 2-17.
Connecting to Model 831 through 831-INT-ET using SLM Utility-G3
3-5
Refer to the SLM Utility-G3 Manual
for more information on its various
operations and functions.
Step 3
Click Connect. This will connect SLM Utility-G3
to the Model 831 through TCP/IP.
FIGURE 3-3 Remote Internet Site Connection Box using Remote Site Host Name
Battery Charger Operation
The 831-INT battery charger is designed to automatically
charge an 12V external sealed lead acid battery. The four
charger modes and the red CHARGE LED operation are
shown in Table 3-2.
3-6
Battery Charger Operation
Operation
The CHARGE LED indicates sensor
temperature by the duration it
remains on between blinks. At 0 °C
(32 °F), the LED remains on for 5
seconds; at 25 °C (77 °F), the LED
remains on for 3 seconds, and at 60
°C (140 °F), the LED remains on for
1 second.
Mode/Status Indication
Charger
Mode
Charge LED
(Red)
Off: Disabled, or
no mains power
Off
Rapid Charge
On
Float Charge
On, winking once
every few seconds
Low Battery
Recovery
Slow flashing
Fault, thermistor, or
no battery
Fast Blinking
Table 3-2 Charger Mode/LED Indication
If the battery becomes drained, the Model 831 will shut off
and the 831-INT will discontinue supplying power to
peripherals to protect the battery and enhance service life.
The time that it takes to fully charge a battery using the 831INT can be estimated from the following equation:
T=1.6xC
where
The 1 Ampere charge available from
the 831-INT can charge batteries
with total capacities up to 42 AH.
For batteries with higher capacities
than this, an external charger should
be used and the internal charger
disabled (the PSA030 will still be
used to power the system from Mains
Power). See “Battery Charger” on
page 2-11 for additional detail.
T is time in hours
C is battery capacity in Ampere Hours (AH)
For instance, a 42 AH battery would take 1.6 x 42 = 67.2
hours to fully charge.
Battery Matching
It is important when using dual batteries to ensure that they
are of the same make, model, charge level and age. To
ensure that new batteries are at the same charge level you
can:
•
Charge each battery individually and then put them inservice together. (This is the preferred method.)
• Install the first battery.
Operation
Battery Charger Operation
3-7
• Charge the first battery until the charge status
indicates float mode.
• Disconnect the first battery.
• Install the second battery.
• Charge the second battery until the charge status
indicates float mode.
• Reinstall the first battery with the second battery
as they are now matched in charge.
•
Measure the voltage of the two individual batteries. If
they are within 1/2 volt of each other they may be
installed at the same time.
Solar Power Operation
For more information on external
battery shutoff, see the Model 831
Manual.
The 831-INT has provisions to work with solar power. The
solar charger connects directly to the battery and the battery
connects to the BATTERY connector of the 831-INT. To
protect the battery, the system will shut off if the battery
becomes discharged. This shut-off voltage defaults to 10.8
VDC, but can be programmed in the Model 831 settings.
When the battery voltage reaches 12.5 VDC for at least two
minutes, the system will automatically power on.
In the event that the system was powered off because of a
low battery, the user can manually power up the system by
pulling out the battery connector to the 831-INT for 30
seconds and then plugging it back in. This can be done as
long as the battery voltage is greater than 10.8 volts.
System SLA Battery Capacity and Run-time
In the event that the mains power is lost to the 831-INT or
when the solar charging system is not supplying adequate
power to the 831-INT, the 831-INT will switch to backup
SLA batteries. To roughly estimate the total system battery
run-time off this SLA battery, one needs to first calculate the
total system power requirement. The power consumptions of
the various system devices involved are listed in Table A-4
'Device Power Consumption'. After summing the total
system power, to find the battery run-time approximation,
use the equation:
Battery run-time = (C x 12.0 x 0.8) / Total System Power
3-8
Solar Power Operation
Operation
C is the total batteries capacity in amp-hours.
12.0 is the nominal voltage of the batteries.
The 0.8 factor is a safety margin multiplier.
An example system might be something like running
a Model 831, 831-INT-ET, 426A12 (microphone bias on),
GPS001 (in auto mode), SEN031, and COM-RAVEN-DC
3G gateway, with a 9.0 amp-hour back-up SLA battery. To
calculate the battery run-time, we first sum the total system
power. The total system power calculations for this example
are found below in Table 3-3 'Total System Power Example':
System Device
Model 831 with 831-INT-ET
426A12 outdoor preamplifier
GPS001 GPS receiver (auto
mode)
SEN031 Vaisala weather station
COM-RAVEN-DC 3G gateway
(idle)
Total System Power
Power (watts)
4.4
1.4
0.05
0.04
0.96
6.9
Note: It is assumed that the COM-RAVEN-DC Raven
gateway will be running in idle for the majority of this time.
Table 3-3 Total System Power Example
The next step would be to calculate the battery run-time:
Battery run-time = (9.0 amp-hr x 12.0 volts x 0.8) / 6.9=12.5
hours.
If the system is expected to be running in cold temperatures,
you will also need to multiply this calculated battery runtime by a cold temperature multiplier found in Table 3-4:
Operation
System SLA Battery Capacity and Run-time
3-9
Temp (°C)
Battery Run-time Multiplier
21
1.0
10
0.90
0
0.85
-10
0.75
-201
0.65
-30
0.53
1
Note: Many SLA batteries (including those sold with the
Larson Davis noise monitoring systems) can be discharged at temperatures above -40 °C, but can only be
charged at temperatures above -20 °C.
Table 3-4 Battery Run-time Temperature Multipliers
So, if the above example system were to run at a possible
extreme temperature of -20 °C, the backup battery run-time
would be:
12.5 x 0.65 = 8.1 hours.
Battery lifespan will be dependent on what extent the battery
is being discharged. If the SLA battery is being used in a
backup type application, the typical battery life span is
approximately three to five years.
For more information, see Lifecycle
information
from
Power-Sonic
corporation’s publication entitled
Sealed
Lead-Acid
Batteries
Technical Manual.
If the battery is being used in a cyclical discharge scenario
(i.e. solar powered system), the battery lifespan can vary
according to what depth the battery is discharged to. For
example, if the battery is being discharged 100% of the
capacity each cycle, a typical battery will only be able to be
cycled approximately 200 times. Cycling it down by 50%
would give approximately 500 cycles. Cycling it down by
only 30% would give approximately 1000 cycles.
If the system is being charged by solar panels, other factors
come into play such as solar panel power output, location's
latitude, time of year, amount of sun exposure per day, etc.
3-10
System SLA Battery Capacity and Run-time
Operation
APPENDIX
A
Technical Specifications
The specifications contained in this chapter are subject to change without notice.
Physical Characteristics
Length:
7.68" (19.5 cm)
Width:
3.00" (7.62 cm)
Height:
3.02" (7.66 cm)
Weight:
831-INT: 16.4 oz (465g)
831-INT-ET: 17.5 oz (496g)
Environmental Specifications
Operating Temperature:
- 40 °C to 70 °C
Storage Temperature:
- 40 °C to 70 °C
Humidity:
10 to 95% RH, non-condensing
831-INT and 831-INT-ET Manual
Technical Specifications
A-1
FIGURE A-1 831-INT Dimensional Drawing
A-2
Technical Specifications
831-INT and 831-INT-ET Manual
831-INT-ET Docking Station with Ethernet
The 831-INT-ET adds Ethernet communication capability to all features present in the 831-INT. The
831-INT-ET contains the following additional features:
•
Embedded computer.
•
Ethernet connector.
•
Additional USB Ports A and B. Use USB Port B to connect to the Model 831 USB Port.
•
Expanded watchdog functionality. If USB communication between the 831-INT-ET and Model
831 is lost for more than 5 minutes the complete system will restart.
USB HUB
•
Powered, providing up to 500 mA per output port
•
Hub Input Connector: Standard 5-pin mini-B Jack
•
Four Hub Output Connectors: Standard USB-A Host Jacks. USB ports 1 through 4.
Outdoor Microphone System
Description
This seven pin LEMO® connector interfaces to the Larson Davis Model 426A12 Outdoor Microphone
System using cable CBL153.
Pin Connections:
6
1
2
7
3
5
4
FIGURE A-2 View looking into the 831-INT's 426A12 control connector
831-INT and 831-INT-ET Manual
Technical Specifications
A-3
Pin
Number
Function and Specifications
1
Power Ground (return for pin 7)
2
Control Ground (return for pins 3 through 6)
3
Electrostatic Actuator On/Off (Output)
On: +2.6 to +3.6V output
Off: 0 to +0.3V output
Electrical Impedance: 1100 ohms
4
Overload (Input)
+5 V indicates system overload, 0 V is no overload
5
Sensor Clock (Output)
6
Sensor Data I/O (Input & Output)
7
Power (Output)
Output Range: +10.5 to +15 VDC
Maximum Load: 100 mA
Fused at 0.5 Amperes, slo-blo
Turns off when 831-INT and Model 831 are turned off
Table A-1 Pin Connections for 426A12 Outdoor Microphone System
Mating Connector:
• Push-Pull cable connector, 7-position
• LEMO® p/n FGG.1B.307.CLAD52Z or equivalent connector with collet
• LEMO® p/n GMA.1B.045.DA or equivalent, flex relief
A-4
Technical Specifications
831-INT and 831-INT-ET Manual
Battery Charger
Description
This input provides an alternate means to charge batteries when the internal charger is disabled. The
mains power input can be used to power the system, when mains power is available, so this external
charger will only charge batteries. This input is connected directly to the battery terminals through
fuses and provides for optional alternative battery charging. A solar charge control can be attached to
this connector or, preferably, directly connected to the batteries.
Pin Connections:
Center Pin is positive battery DC voltage
Sleeve is Ground
Mating Connector:
Power Plug, 2.5 mm x 5.5 mm x 9.5 mm
Fuse
Fuse-protected at 3 Amperes, slow blow
Battery Connector
Description
This five pin connector accommodates the connection of two batteries. Use the CBL147 or CBL149 to
connect to batteries. When using solar panels, use CBL160 to connect batteries.
Pin Connections:
Pin
Number
Function
1
Battery #1 Negative, Ground
Use 16AWG BLACK Insulated Stranded Wire
2
Battery #1 Positive
Fuse Protected in 831-INT at 3 Amperes, slow blow
Battery voltage: 12 VDC Nominal, 16 VDC maximum
Use 16 AWG RED Insulated Stranded Wire
Table A-2 Pin Connections for Battery Connector
831-INT and 831-INT-ET Manual
Technical Specifications
A-5
Pin
Number
Function
3
Temperature Probe Input
100 k ohm thermistor, negative temperature coefficient
Connect thermistor from pin 2 to pin 3 (battery +)
Recommended device: BC COMPONENTS p/n: 2322
633 83104 (leaded part) or p/n: 2322 633 53104 (surface
mount part)
Must be thermally connected to battery
4
Battery #2 Positive
Fuse Protected inside 831-INT at 3 Amperes, slow blow
Battery voltage: 12 VDC nominal, 16 VDC maximum
Use 16 AWG RED Insulated Stranded Wire
5
Battery #2 Negative, Ground
Use 16 AWG BLACK Insulated Stranded Wire
Table A-2 Pin Connections for Battery Connector
Mating Connector for battery and also for logic I/O AUX Power Connector:
Pluggable Screw Terminal, 5-position
PHOENIX CONTACT p/n 1803604
16 to 28 AWG Wire Size
Larson Davis part number: 6200.0008
Logic I/O & Auxiliary Power Connector
Description
This five pin connector provides connections for Logic Output and Logic Input control lines, +5 volt
output and switched battery power for auxiliary devices.
Pin Connections:
Pin
Number
1
Function
Ground
Table A-3 Pin Connections for Logic I/O and Auxiliary Power Connector
A-6
Technical Specifications
831-INT and 831-INT-ET Manual
Pin
Number
Function
2
Logic Output
Open drain transistor output
Capable of sinking 500 mA (maximum)
Voltages up to +16 VDC
On resistance less than 2to ground
May be used to switch on Light-Emitting-Diodes (LED) or
relays (solid-state or mechanical with protective reverse current diode)
Power for LED lamps may come from pin 4
3
Logic Input
+5 Volt active high input, 0 for de-asserted
May be a switch from pin 4
25 k resistor to ground input load
4
Auxiliary +5 Volt Supply Output
+5 Volt for Logic Input switches or Logic Output LED power
250 current limiting resistor
5
Auxiliary Power Supply Output
+10.8 to +15 VDC to power auxiliary devices
200 mA maximum load
Self resetting fuse rated at 0.5 A (@ 25 °C)
Turns off when 831-INT and Model 831 are turned off
Table A-3 Pin Connections for Logic I/O and Auxiliary Power Connector
831-INT and 831-INT-ET Manual
Technical Specifications
A-7
Power Specification
Power Consumption for Model 831, 831-INT, 831-INT-ET and
Accessories
Device
Power (Watts)
Model 831
0.92
Model 831 with 831-INT
1.2
Model 831 with 831-INT-ET
4.40
PRM831 Microphone Preamplifier
0.22
Model 426A12 Outdoor Preamplifier
(no mic bias)
1.0
Model 426A12 Outdoor Preamplifier
(with 200 V mic bias)
1.4
GPS001 GPS Receiver (Auto)
0.05
GPS001 GPS Receiver (On, not auto)
0.50
SEN031 Vaisala Weather Station
0.04
MDMUSB-A Dial-up modem
0.90
COM-RAVEN-DC Raven XE gateway (idle)
0.96
COM-RAVEN-DC Raven XE gateway (transmitting)
1.50
Model 831 USB host enabled
0.30
831-INT/831-INT-ET USB hub enabled
0.30
Note: Consumption values are typical with system voltage at 12
volts.
Table A-4 Device Power Consumption
See System SLA Battery Capacity and Run-time on page 3-8 for more information on power
consumption of other related system equipment and peripherals, total system consumption and also
backup battery capacity required.
A-8
Technical Specifications
831-INT and 831-INT-ET Manual
Mains Power
Description:
The mains power input on the 831-INT and provides power to charge batteries when using the internal
charger, and to run the Model 831 with USB devices.
Pin Connections:
Center Pin is +15 VDC, absolute maximum is +16 VDC
Sleeve is Ground
Mating Connector:
Power Jack, 2.1 mm x 5.5 mm x 9.5 mm
Fuse:
Fuse Protected by two 3 Amperes, slow blow fuses; one for charger and one for system operation
PSA030 Power Adapter
Larson Davis part number PSA030 power adapter is supplied with the Model 831-INT and has the
following specifications:
INPUT
AC Input Voltage Rating:
100 to 240 VAC
AC Input Frequency:
47 to 63 Hz
Input Current:
1.2 A (rms) max. @ 115 VAC
OUTPUT:
Voltage:
15.0 VDC
Load Current:
0 to 3.2 A
Over Voltage Protection:
110-170% Vnom, Recycle input to reset
Over-current Protection:
110-170%, auto recovery
831-INT and 831-INT-ET Manual
Technical Specifications
A-9
Battery
One or two sealed-lead-acid (SLA) batteries may be used with the Model 831-INT.
Voltage:
12 volts Nominal
Typical Battery Configurations:
9 Ampere Hour, 12V Battery, LD p/n BAT014
2 x 21 Ampere Hour, 12V Batteries for a total of 42 AH, (two of LD p/n BAT011)
Minimum Recommended Capacity:
9 Ampere Hour
Terminals:
¼" male disconnect tab or bolt on adapter
Maximum Load:
Limited by 3 Ampere fuse per battery
Internal Charger
Triple Mode Charger:
1 Ampere rapid charge mode, followed by float charge mode, with Trickle charge for deeply
discharged batteries utilizing 1 A maximum charge pulses.
Rapid Charge Initiation Voltage:
VBattery 10.8 to 12.0 volts with temperature compensation
Rapid Charge Termination Voltage:
VBattery greater than 14.3 volts
Note: The 1 Ampere charge available from the 831-INT can charge batteries with total capacities up
to 42 AH. For batteries with higher capacities than this, an external charger should be used and the
internal charger disabled (the PSA030 will still be used to power the system from Mains Power). See
Battery Charger on page 2-11 and Battery Charger Operation on page 3-6 for additional detail.
A-10
Technical Specifications
831-INT and 831-INT-ET Manual
Float Charge Voltage:
13.8 volts, nominal at room temperature with temperature compensation.
FIGURE A-3 Charger Temperature Compensation
Temperature Sensor:
Internal: used when battery is in same enclosure
External: mounts directly to battery for greater accuracy
Trickle Charge Mode:
Activated when VBattery is less than 10.8 volts
Deactivated when VBattery is greater than 12.0 volts
Other Electrical Characteristics
Battery Low, Shut-off Voltage:
10.8 volts (adjustable setting in the Model 831).
831-INT and 831-INT-ET Manual
Technical Specifications
A-11
Switches from Mains to Battery Power when Mains voltage < 13.86 volts (battery must be sufficiently
charged to operate the system).
Watchdog Cycle Time:
The 831-INT monitors the activity status of the Model 831. If no activity is sensed for 12 minutes, it
will power-off the Model 831 and 831-INT for 15 seconds, after which time it will turn the power back
on. It will repeat this cycle until the activity status indicates the Model 831 is operating again.
When using an 831-INT-ET there is a second watchdog monitoring the SBC. If no activity is sensed, it
will behave in the same manner as the first watchdog.
NOTE: Remove the AA batteries from the Model 831 in order for the watchdog to function properly.
A-12
Technical Specifications
831-INT and 831-INT-ET Manual
APPENDIX
B
Troubleshooting
When I press the power button on my Model 831, the Model 831 does not turn on.
•
If powered with mains power and the MAINS PWR status light on the 831-INT or 831-INT-ET is
lit:
○Verify that the Model 831 is seated into the 831-INT, and the 831-INT retaining screw (FIGURE 2-10) is securing the Model 831 to the 831-INT.
○Ensure Model 831 hardware power switch is in ON ('|') position.
FIGURE B-1 Model 831 Bottom view
•
If powered with mains power and the MAINS PWR status light is not lit:
○Ensure that the PSA030 power supply is plugged into AC mains and to the 831-INT MAINS
POWER connector.
○Check to see if indicator light on PSA030 power supply is on.
•
My 831-INT is configured for solar power or battery operation:
○Check battery connections and voltage.
831-INT and 831-INT-ET Manual
Troubleshooting
B-1
○Battery voltage must be greater than 12.5V for Model 831 to turn on automatically, observe
status light on external or solar battery charger to see if the battery is being fully charged.
•
If Model 831 still does not turn on, call customer support for further assistance.
During a power outage, my Model 831 or 831-INT does not continue operating.
•
Check that the connections to the batteries and the 831-INT are correct.
•
Verify the SLA batteries are being fully charged by checking the Battery Charger Status light on
the 831-INT. This light will be flashing if the battery is not connected.
•
Determine if batteries have exceeded normal service life and replace if needed.
•
Check fuses.
•
If Model 831 and 831-INT still does not turn on, call customer support for further assistance.
My solar charger does not charge my batteries.
•
Check for and remove obstructions that will shade the solar panel.
•
Check indicators on solar charger.
•
Determine if batteries have exceeded normal service life and replace if needed.
•
Call customer support for further assistance.
I cannot connect G4 LD Utility to the Model 831 and 831-INT-ET using an Ethernet
connection.
FIGURE B-2 Ethernet Status Lights and Ethernet PWR Light
Step 1 Check with your IT professional or broadband service provider to verify that the network
router is functioning properly and port forwarding rules are entered correctly.
B-2
831-INT and 831-INT-ET Manual
Step 2
Wait 3 minutes after the 831-INT-ET and Model 831 are powered up before attempting to
establish an Ethernet connection.
Step 3
Check that the CBL159 is connected from the Model 831 USB client port (marked USB on
the Model 831, Figure B-1) to the 831-INT-ET SBC USB port marked “USB B” (See FIGURE B-2 and Figure B-2).
Step 4
Verify that the CAT5e or CAT6 Ethernet cable is attached to the network router and also to
the 831-INT-ET Ethernet connector. (See Figure B-2.) The green LED on the Ethernet connector
should be on; the yellow LED will blink with network connectivity.
Step 5
If a USB or network cable has been temporarily disconnected after power was turned on,
turn off the Model 831 and then turn it back on.
Step 6
Verify that the IP address being used for the 831-INT-ET is correct by using the “ping” command through a command prompt.
Step 7
If the 831-INT-ET and Model 831 power up, but the SBC green PWR light (FIGURE B-2Figure B-2) on the 831-INT-ET remains off:
○Call customer service for service and repair.
Step 8
If the 831-INT-ET still cannot connect then call customer support for further assistance.
My USB peripheral device does not work
•
The Model 831 peripheral device connected by USB through 831-INT does not work (i.e. SEN031
weather station, GPS or analog gateway, etc.):
○Check that the peripherals USB cable is connected into one of the four USB Hub ports on the
831-INT (marked USB Port 1 through 4, FIGURE 2-2 & FIGURE 2-4).
○Verify that the USB host port in the Model 831 settings is enabled. See the Model 831 Technical Reference Manual for instructions.
○Make sure the CBL159 USB cable is connected from the Model 831 USB Host port (marked
AUX on the Model 831, Figure B-1) to the 831-INT USB hub port (marked USB HUB
INPUT, FIGURE 2-4).
○Verify that the 831-INT USB Hub status light is on when the CBL159 USB cable is connected from the Model 831 to the 831-INT. If this light is not on:
►Replace the USB Cable.
►Ensure that the peripheral is enabled in the Model 831 settings and also that the settings are correctly set up for the specific peripheral. See various troubles with specific peripherals listed below.
○If the Model 831 peripheral device still doesn't work then call customer support for further
assistance.
831-INT and 831-INT-ET Manual
B-3
My GPS001 GPS receiver does not work
Buildings, trees, and mountainous terrain can hinder GPS reception.
• Check all cable connections.
• Verify that the GPS receiver is enabled in the Model 831 System Properties.
• Try re-orienting the GPS receiver by moving it outside where it can be receive the GPS signal.
• If the light on the GPS receiver is not flashing then call customer support for further assistance.
My SEN031 weather station does not work
• Check that the CBL167 is plugged into the SEN031.
• Verify that the CBL167 cable is connected to 831-INT Logic I/O and Auxiliary Power; ensuring
that power connections are correct (including polarity). See Figure B-3.
FIGURE B-3 PROPER POWER CONNECTIONS TO LOGIC I/O AND AUXILIARY POWER
• Ensure that the DVX008A (USB to Serial adapter) is plugged in correctly from the CBL167 to one
of the 831-INT USB hubs (marked USB Port 1 through 4, FIGURE 2-2 & FIGURE 2-4).
• Verify that SEN031 is enabled in the Model 831 settings. See the Model 831 Technical Reference
Manual for instructions.
• If the SEN031 weather station is still not working then call customer support for further assistance.
My MDMUSB-A analog modem does not work
• Check that the phone line is plugged in.
• Verify that a dial-tone is heard on both the phone line where the Model 831 and system is installed,
as well as office location where the connection is being initiated. This can easily be tested with a
standard telephone headset.
• Ensure that the modem is enabled and that all other modem settings are set up properly in the
Model 831 settings and G4 LD Utility. See the Model 831 Technical Reference Manual for instructions.
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831-INT and 831-INT-ET Manual
• Make sure the modem password found in the Model 831 settings matches that being entered into
G4 LD Utility.
• Check to see that the phone number is correct.
• Verify there is not a laptop connected directly to the Model 831 USB connector.
• If the MDMUSB-A is still not working then call customer support for further assistance.
My COM-RAVEN-DC Raven XE wireless Gateway does not work
• Ensure that your IT professional has set up and configured the Raven gateway for proper use,
including setting up the gateway for cellular service with a data plan. Refer to the Raven XE users
guide along with Larson Davis instructions specific to setting up for use with 831-INT-ET.
• Raven gateway POWER light does not come on when the Model 831 is on:
○Ensure the Raven gateway is powered correctly with its own cable to the 831-INT-ET
AUX POWER and Logic I/O port, with correct pins and polarities. See Figure B-3.
○If Model 831 is powering up, but Raven gateway POWER light is still not coming on, call
customer support for service and repair.
• The Raven gateway Ethernet green status light as well as the 831-INT-ET Ethernet port green status
light should come on 3 minutes after the Model 831 powers up. If this does not happen:
○Check Ethernet cable from 831-INT-ET to Raven gateway
○Call customer support for service and repair.
• Raven gateway NETWORK light does not come on:
○Verify that the SIM card is correctly installed and that the service is active.
○Verify that the cell phone account is set up properly with a data plan and a static IP address
Note: Cell providers may provide good coverage for voice but poor coverage for data service. Therefore you cannot rely upon the bars of your cell phone to determine data coverage but should check
with your service provider.
○Verify that the cellular service is available at the installed location.
○Verify that both antennas are installed on the Raven gateway.
○Raven gateway SIGNAL light (comes on after the NETWORK light comes on):
►Solid: Very good cellular connection.
►Blinking quickly: Good cellular connection.
►Blinking slow: Poor cellular connection.
►Off: No cellular connection.
831-INT and 831-INT-ET Manual
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○Verify that the IP address being used is correct when connecting with G4 LD Utility. The
IP address will be provided by the cell service provider
○When working correctly, the network LED will be on and ideally the signal light will be
solid. When the signal light is blinking slowly, expect sporadic and unreliable communication
○Contact cellular service and Larson Davis customer support for further assistance.
• Requirements for cellular service plan
○Use a cellular service that can support data upload rates of 50 kbps or higher.
○To avoid overage fees, verify that the type of cellular service data plan is adequate for the
anticipated amount of data. See “Memory Utilization” in the Model 831 Technical Reference Manual.
My Model 831 is not showing any sound level signal from the Model 426A12
• Verify that both the CBL152 signal and CBL153 control cables are plugged in correctly to the
Model 831, Model 426A12, and 831-INT. (FIGURE 2-1.)
• Ensure that the Preamp Type is listed as 426A12 on the Model 831.
• Ensure the microphone is correctly installed on the Model 426A12.
• Refer to the 426A12 Technical Reference Manual for further help.
• Call customer support for service and repair.
The IP Address on Model 831 is not shown.
•
Verify that the Model 831 is properly assembled to 831-INT-ET, and both are turned on.
•
Confirm connection of the Ethernet cable to 831-INT-ET and router, and the router is properly
working. You can also connect the Ethernet cable to a PC.
•
Reboot system. Check Tools > Communication on Model 831 display.
•
If the DHCP is not found, the 831-INT-ET automatically sets the IP address 192.168.1.200 and this
may not be shown on the screen. For this feature to work, the 831-INT-ET must have a firmware
version V2.310 or newer, and the assembly needs to be rebooted.
•
If connected directly into PC with Ethernet cable, you’ll need to set your PC IP Address to
192.168.1.###. Do not choose 200 for the last address, as this is the 831-INT-ET IP Address. See
your network professional for further assistance.
•
See "Connecting to Model 831 through 831-INT-ET using G4 LD Utility" on page 3-4 and use the
IP Address 192.168.1.200
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831-INT and 831-INT-ET Manual
Miscellaneous Troubleshooting
•
When connecting peripheral devices such as Raven or analog gateway, GPS receiver, or SEN031
weather station to the system, ensure that the Model 831 is turned off. Turn power on after peripherals are installed so that these devices will be properly recognized by the system.
831-INT and 831-INT-ET Manual
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831-INT and 831-INT-ET Manual
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