AJAX vhfBridge User Manual
  1. Manuals
  2. Brands
  3. AJAX Manuals
  4. Security Sensors
  5. vhfBridge
  6. User manual

AJAX vhfBridge User Manual

Hide thumbs Also See for vhfBridge:
Table of Contents

Advertisement

Quick Links

Download this manual
vhfBridge User Manual
Updated September 21, 2022
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 100–240 V~ mains and can be operated from a 12
V
backup battery. 
⎓
vhfBridge operates as part of the Ajax security system and connects to the hub
via the
Jeweller
secure radio communication protocol. The hub communication
range is up to 1,800 meters without obstacles. Supplied in two con gurations:
with a casing and without it.
Buy vhfBridge
Functional elements
Casing elements

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the vhfBridge and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for AJAX vhfBridge

Summary of Contents for AJAX vhfBridge

  • Page 1 The device is powered from 100–240 V~ mains and can be operated from a 12 backup battery.  ⎓ vhfBridge operates as part of the Ajax security system and connects to the hub via the Jeweller secure radio communication protocol. The hub communication range is up to 1,800 meters without obstacles.
  • Page 2 ⎓ Battery not included with vhfBridge set. 3. QR code with the device ID. It is used to pair the device with the Ajax security system. 4. Perforated part of the casing. Necessary for tamper triggering in case of any attempt to detach the device from the surface.
  • Page 3 3. Tamper button. Signals if vhfBridge casing lid is removed. 4. Power button. 5. LED indicator. 6. QR code with the device ID. It is used to pair the device with the Ajax security system. 7. Terminals for connecting a VHF transmitter.

  • Page 4: Led Indication

    Please note that the LED indicator is not visible when the casing lid is closed. The LED indicator is used at the stage of vhfBridge connecting and con guring. Later on, the state of the device can be monitored in the Ajax app.

  • Page 5: Operating Principle

    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 (recommended more reliable option).
  • Page 6 CMS via a radio channel. 00:00 00:12 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. ...
  • Page 7 Output types vhfBridge has 8 potential outputs for connection to a VHF transmitter. There are two types of outputs:  1. High potential output (positive trip).  2. Low potential output (negative trip). The 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...

  • Page 8: Adding To The System

    Adding to the system vhfBridge doesn’t work with Hub, ocBridge Plus, uartBridge and third-party security central units. The device can only be added and con gured through the Ajax PRO app by a user with administrator rights. Before adding a device 1.

  • Page 9: Malfunction Counter

    1. Open the Ajax app. If your account has access to multiple hubs, select the one to which you want to add vhfBridge. 2. Go to the Devices menu and click Add Device. 3. Name the transponder, scan or enter the QR code manually (located on the device casing and packaging), and select a room and a group (if the group mode is activated).
  • Page 10 Icons display some of the vhfBridge states. You can check them in the Ajax app in the Devices tab. Icon Meaning Jeweller Signal Strength. Displays the signal strength between the hub and vhfBridge. Recommended value is 2–3 bars. The charge level of the battery connected to vhfBridge.
  • Page 11  to open the list of vhfBridge malfunctions. Malfunction The eld is displayed only if a battery charge malfunction is detected. Signal strength between the hub and vhfBridge.  Jeweller Signal Strength Recommended value is 2–3 bars. Connection status between the hub and vhfBridge: Connection via Jeweller Online —...
  • Page 12 The device does not follow system commands and does not report alarms or other events. Firmware vhfBridge rmware version.  vhfBridge ID/serial number. Also located on the Device ID device box, its board, and the casing. Device No. Device loop (zone) number.
  • Page 13 Please note that after editing the settings, you should click the Back button to save them. Con guration Meaning vhfBridge name. Displayed in the text of SMS and noti cations in the event feed. To change the device name, click on the pencil Name icon.
  • Page 14 Set up the battery charge duration.  When this option is enabled, the system will send a malfunction noti cation if the battery connected to vhfBridge has been charging more Track battery charge time than 40 hours. Disable tracking if the VHF transmitter is powered directly from the battery and not from the vhfBridge power terminals.
  • Page 15 5th output — loss of vhfBridge power supply 6th output — power loss of the hub 7th output — hub battery discharged 8th output — loss of communication between the hub and vhfBridge The settings of outputs can be changed in the Ajax app: 1. Go to the Devices tab.
  • Page 16 Selection of the output type: High potential output (positive trip). Connection type Low potential output (negative trip). Event types of vhfBridge outputs Type of Operating Icon Description event mode Not assigned Output disabled. Alarm when motion, opening, and other Intrusion Pulse detectors are triggered.
  • Page 17 Ajax apps The virtual panic button in Any alarm Pulse Alarm of any connected detector. Malfunction Pulse Any malfunction of the connected detectors. Transponder Bistable Loss of external 110–240 V~ power supply to external vhfBridge transponder. power failure...
  • Page 18 Transponder Bistable vhfBridge backup battery is discharged. battery low Hub external Loss of external 110–240 V~ power supply to Bistable power failure the hub. Hub battery Bistable Hub backup battery is discharged. Triggering of tamper of any device in the Pulse system.
  • Page 19 Jeweller connection channel. loss The time before sending an event regarding the loss of communication between the hub and vhfBridge to the CMS is calculated with the following formula: “Hub — detector” polling interval × 30 undelivered packets.
  • Page 20 How to connect a VHF transmitter to vhfBridge When connecting the VHF transmitter, do not twist the wires together, but solder them. The ends of the VHF transmitter wires, which will be inserted into the vhfBridge terminals should be tinned or crimped with a special sleeve.
  • Page 21 5. Connect the VHF transmitter to the control outputs of vhfBridge according to the wiring diagram in the User Guide supplied by the VHF transmitter manufacturer. 6. Fasten the cable securely to the vhfBridge terminals using a straight screwdriver (slot PL 3.0).
  • Page 22 VHF transmitter: the cable length should be su cient for connection. The minimum distance between vhfBridge and the radio transmitter is 2 meters and the maximum distance is 7 meters. The minimum distance is required to avoid signal overlapping.
  • Page 23 1. Remove the vhfBridge casing lid by unscrewing the bottom and top screws with the bundled hex wrench. 2. Remove the vhfBridge board from the holders by pulling them to the sides. 3. Prepare cable openings in advance by carefully breaking out the perforated...
  • Page 24 5. Run the cables into the transponder casing through the previously made holes. 6. Install the vhfBridge board into the casing on the racks. Connect VHF transmitter to vhfBridge . Follow the polarity and connection order of the wires.
  • Page 25 Add an integration module to the system 13. Install the lid on the casing and x it with the bundled screws. 14. Test vhfBridge and connected VHF transmitter. Do not install vhfBridge: Outdoors. Doing so may cause the device to malfunction or not work properly.

  • Page 26: Maintenance

    Maintenance Check the functionality of vhfBridge regularly. The optimal frequency of checks is once every three months. Clean the casing from dust, cobwebs, and other contaminants as they emerge. Use a soft dry cloth suitable for equipment care. Do not use any substances containing alcohol, acetone, gasoline, and other active solvents to clean the device.

  • Page 27: Complete Set

    145 × 89 × 51 mm (without a casing) 840 g (with a casing) Weight 165 g (without a casing) Complete set 1. vhfBridge. 2. Power cable. 3. 12 V battery connection cable. 4. Installation kit. 5. Casing (depends on con guration).

  • Page 28: Warranty

    6. Quick Start Guide. Warranty Warranty for the AJAX SYSTEMS MANUFACTURING Limited Liability Company products is valid for 2 years after the purchase. If the device does not work correctly, you should rst contact the support service. In most cases, technical issues can be resolved remotely.

Table of Contents