AJAX vhfBridge Bedienungsanleitung
vhfBridge User Manual
Updated December 10, 2021
vhfBridge is a module for connecting Ajax security systems to third-party VHF
transmitters. It provides 8 transistor outputs for connection to third-party VHF
transmitters.
The device is powered from 100–240V ~ mains and can be operated from a
12V⎓ backup battery.
The vhfBridge operates as part of the Ajax security system by connecting via
the secure radio communication protocol to the hub. The hub
communication range is up to 1800 meters without obstacles. Comes in two
congurations: with and without a casing.
Functional elements
Body elements
Jeweller
Buy vhfBridge
The presence of the casing depends on the vhfBridge package. Devices come in two
congurations: with and without a casing.
vhfBridge board elements
1. Screws securing the body lid. Unscrew with bundled hexagon key (Ø 4 mm).
2. Cavity for a 12V backup battery.
Battery not included with vhfBridge set.
3. QR code and ID (serial number) of the device.
4. Perforated part of the body. It is necessary for tamper triggering in case of
dismounting attempts.
5. Perforated part of the body for the output of wires of connected detectors
and devices.
vhfBridge terminals
1. Terminals for connecting a 12 V⎓ backup battery.
2. Power supply input 100–240 V~.
3. Tamper button. Signals if vhfBridge body lid is removed.
4. Power button.
5. LED indicator.
6. QR code and ID (serial number) of the device.
7. Terminals for connecting a third-party VHF transmitter.
BATT — input for 12 V⎓ backup power connection
LED indication
vhfBridge LED indicator may light up white, red, or green, depending on the
status of the device.
Please note that the LED indicator is not visible when the body lid is closed. The
LED indicator is used at the stage of connecting and conguring the vhfBridge.
In the future, the state of the device can be monitored in the Ajax app.
LED indication Event Note
Lights white.
Connection with the hub is
established, external power
supply is connected.
Lights red.
There is no connection with
the hub, external power supply
is connected.
For example, the hub is turned
off or vhfBridge is outside the
coverage area of the hub’s
wireless network.
Goes out for 0.5 seconds, then
lights up green and turns off. Enabling vhfBridge.
Goes out for 0.5 seconds, then
lights up green and fades out
over 3 seconds.
Disabling vhfBridge.
Blinks red once per second. vhfBridge is not assigned to a
OUT — power output for the 12 V⎓ VHF transmitter (maximum output
current 2 A)
OUT1…8 — vhfBridge outputs for connecting a third-party VHF transmitter
hub.
Lights up for a second once
every 10 seconds.
No external power supply is
connected to vhfBridge.
The colour of the indication
depends on the status of
connection with the hub:
During an alarm, gradually
lights up and goes out once
every 10 seconds.
No external power supply and
discharged external battery of
vhfBridge.
The colour of the indication
depends on the status of
connection with the hub:
LED indication of output status
LED indication Output status in case of alarm
High potential output (positive trip). Lights up green.
Low potential output (negative trip). Goes out.
Operating principle
vhfBridge is designed to connect third-party VHF transmitters to create an
additional channel for transmitting events to the CMS.
The communication channel with the CMS created using vhfBridge can be used
as the only or as a backup channel for communicating with the CMS (more
reliable option). This means that the hub can simultaneously transmit all events
and alarms to the monitoring station of the security company not only through
SIA, Contact ID, and other proprietary protocols but also using vhfBridge.
The transponder receives information about alarms and events from the hub via
the Jeweller radio channel. vhfBridge then transmits it to a third-party VHF
lights up white if there is
connection with the hub;
lights up red if there is no
hub connection.
lights up white if there is
connection with the hub;
lights up red if there is no
hub connection.
transmitter over the wires. The VHF transmitter, in turn, transmits all events and
alarms to the CMS via a radio channel.
Events can be transmitted to the CMS via the internet and vhfBridge in parallel.
Transmission via the internet works as the main channel because of greater
reliability and informativity. The transmitted events may contain the zone
number of the triggered detector, group number, user number, and other data.
vhfBridge works as a backup communication channel and duplicates all events
transmitted via the internet. The delivery speed of events and alarms in both
cases does not exceed 1 second.
An example of the algorithm of actions in case of an alarm from a
MotionProtect motion detector:
1. MotionProtect has detected an alarm.
2. MotionProtect transmits the alarm to the hub via the Jeweller radio
protocol.
3. The hub receives the MotionProtect alarm and transmits it to vhfBridge via
the Jeweller radio protocol.
4. vhfBridge receives the alarm from the hub and transmits it to the third-party
VHF transmitter over a wired connection.
5. The VHF transmitter receives the alarm and transmits it to the radio receiver
on the CMS side via the radio channel.
6. The radio receiver receives the alarm and transmits it to the CMS software.
7. The CMS receives and processes the alarm.
Output types
vhfBridge has 8 potential outputs for connection to a VHF radio transmitter.
There are two types of outputs:
The positive trip (high-potential output) does not supply voltage in the normal state. As
soon as an alarm or event occurs, the output supplies a voltage of 12–14 V⎓. The
negative trip (low-potential output) works the other way around. In the normal state, the
voltage is maintained at 12–14 V⎓, and when an alarm or event occurs, the voltage
drops to 0 V.
The vhfBridge output type and alarm pulse duration are congurable in Ajax
apps.
VHF transmitter power supply
vhfBridge can supply a third-party VHF transmitter with 12 V⎓ power (maximum
output current 2 A).
If the VHF transmitter has a current consumption of more than 2 A, it can be
powered by the vhfBridge battery. In this case, disable battery charge tracking in
the vhfBridge settings so that the system users do not receive notications
about the vhfBridge battery charging too long.
vhfBridge event transmission to the monitoring station
Ajax security system can also connect to the CMS and transmit alarms to the
monitoring station in Sur-Gard (Contact ID), SIA (DC-09), and other proprietary
protocol formats. See a complete list of supported protocols .
The vhfBridge loop (zone) number can be found in the device states:
1. High potential output (positive trip).
2. Low potential output (negative trip).
here
Which CMSs can the Ajax security system be connected to
The vhfBridge loop (zone) number is also available in the Groups menu (Ajax
app → Devices → Hub → Settings → Groups). To learn the loop (zone)
number, select the group in which the transponder or the required connected
device is located. The Device number corresponds to the loop (zone) number.
Adding to the system
vhfBridge does not work , , , and third-party security central
units. Only user with administrator rights in Ajax PRO application can add and congure
devices.
Before adding a device
1. Sign in to the .Ajax app
2. Go to the Devices menu.
3. Select vhfBridge. The loop (zone) number is displayed at the very bottom of
the page.
Hub ocBridge Plus uartBridge
1. Install the . Create an . Add a hub to the app and
create at least one virtual room.
Ajax PRO app account
Only one vhfBridge can be connected to one compatible Ajax hub.
In order to connect vhfBridge
For the detection and pairing to occur, the transponder should be located within the
coverage area of the hub’s wireless network (at the same guarded object).
If the connection has failed, disconnect vhfBridge for 5 seconds and try again. If
the transponder has already been assigned to another hub, turn off vhfBridge
and then follow the standard addition procedure.
The connected transponder will appear in the list of hub devices in the app.
Updating device statuses depends on Jeweller settings. The default status
update period in the app is 36 seconds.
2. Check that the hub is on and has access to the internet (via Ethernet cable,
Wi-Fi, and/or mobile network). You can do this in the Ajax app or by
checking the hub logo on the faceplate. The logo should light up white or
green if the hub is connected to the network.
3. Ensure that the hub is disarmed and does not start updates by checking its
status in the Ajax app.
1. Open the . If your account has access to multiple hubs, select the
one to which you want to add vhfBridge.
Ajax app
2. Go to the Devices tab and click Add device.
3. Name the transponder, scan or enter the QR code manually (located on the
device body and packaging), and select a room and a group (if the group
mode is activated).
4. Click Add; the countdown will begin.
5. Switch on vhfBridge by holding the power button for 3 seconds. Keep in
mind that the hub connection request is only transmitted when the
integration module is switching on.
Faults counter
When a vhfBridge malfunction is detected (e.g., no external power), the Ajax app
will display a red icon with a number in the upper left corner of the device icon.
The number indicates the number of faults.
All faults can be seen in the transponder states. Fields with faults will be
highlighted in red.
Icons
Andere Handbücher für vhfBridge
2
Inhaltsverzeichnis
Andere AJAX Sicherheitssystem Handbücher
AJAX
AJAX Ajax Hub Bedienungsanleitung
AJAX
AJAX StreetSiren Bedienungsanleitung
AJAX
AJAX Hub Hybrid Bedienungsanleitung
AJAX
AJAX Hub 2 Plus Bedienungsanleitung
AJAX
AJAX StreetSiren Bedienungsanleitung
AJAX
AJAX StreetSiren Bedienungsanleitung
AJAX
AJAX StreetSiren DoubleDeck Bedienungsanleitung
AJAX
AJAX DoubleButton Bedienungsanleitung
AJAX
AJAX StreetSiren Bedienungsanleitung
AJAX
AJAX Hub 2 Bedienungsanleitung
AJAX
AJAX ManualCallPoint Jeweller Bedienungsanleitung
AJAX
AJAX KeyPad Plus Bedienungsanleitung
AJAX
AJAX Hub 2 Plus Bedienungsanleitung
AJAX
AJAX KeyPad Bedienungsanleitung
AJAX
AJAX HomeSiren Bedienungsanleitung
AJAX
AJAX Button Bedienungsanleitung
AJAX
AJAX KeyPad Bedienungsanleitung
AJAX
AJAX HomeSiren Bedienungsanleitung
AJAX
AJAX HomeSiren Bedienungsanleitung
AJAX
AJAX Hub 2 Bedienungsanleitung
Beliebte Sicherheitssystem Handbücher anderer Marken
Highway Safety Group
Highway Safety Group EA401 Bedienungsanleitung
Siren
Siren LED GSM Bedienungsanleitung
Detection Systems
Detection Systems 7090i Montageanleitung
Se-Kure Controls
Se-Kure Controls MicroMini SK-4841 Bedienungsanleitung
Siemens
Siemens FDM273 Bedienungsanleitung
DSC
DSC PC 4010 Betriebsanleitung