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Aritech ATS1234 Manual

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19. 17 ENTER (Create Zone 17)
20. ENTER (Skip text)
21. ENTER (Confirm or change Zone type 2)
22. ENTER (Confirm or change reporting code)
23. 0 (Skip Audio listen in etc.)
24. ENTER (Confirm Area 1 or change area number)
25. ENTER (Confirm NO event flag)
26. 0 (Skip internal siren settings etc.)
27. Continue with next zone if required.
For more details on how to program / delete a sensor, refer to menu
28, 1 of the Wireless DPG (see below).
For more details on how to program a zone, refer to the ATS
programming manual.
Menu 1, DGP Status
The DGP status menu shows the following status information:
1. Operating or if applicable Cover tamper, Wall tamper,
Antenna tamper, or Jamming
2. RF moise level left antenna.
3. RF moise level right antenna.
4. Number of detectors, which report low battery.
5. Number of detectors with long supervisory fail.
6. Number of smoke detectors reporting dirty.
Jamming
Jamming is detected by the reciever.
A jamming condition can occurs if you have more than 30 seconds
jamming within any one minute.
A DGP tamper condition will be generated if the system is blocked
due to jamming.
Approval
The jamming detection is approved according to the EN 50131-5-3
(on 868 FM).
Checking the RF noise level
Electromagnetic noise or Radio Frequency (RF) noise level is a major
consideration when finding the best location for a wireless receiver.
To assist with this process, the Wireless DGP can indicate on the RAS
display the noise received. Remember: RF noise may be transmitted
intermittently from passing cars with noisy ignitions, electric
machinery under load or even household appliances.
The optimum location for the receiver is where the displayed noise
value is minimal. In a good environment, expect values in the range
between –100 and -120 dB). In a bad environment, expect values
between –80 and –100 dB.
In the acceptable installation location the signal strength of the
sensor should to be at least 6 dB above the noise level (please refer
to Menu 5, View signal Level on page 7).
Reception depends on a number of factors, and these are
infinite. To illustrate, reliable reception is much more likely in
example 1 than in example 2 below:
Example 1: You may have a high noise level, but due to the wireless
sensor being in close proximity, the signal strength may be
adequate for reliable operation.
Example 2: You may have a low noise level and weak signal from a
distant wireless sensor.
Use Menu 1 to display the current noise level via the RAS.
Menu 2, Program Zones
With a defaulted DGP, a zone can be programmed (learned) or
deleted via menu 2.
Learning a zone:
• The zone number needs to be entered in the range of the
DGP address.
• If not occupied the display shows the zone number with text
"Unused".
• When the zone number is confirmed by Enter, the display
shows: "how many zones".
868FM devices have only one zone: not applicable.
Deleting a zone:
• The zone number needs to be entered in the range of the
DGP address.
• If the zone is occupied it shows the details of that zone i.e.
17 DWS (door window sensor).
• When the zone number is confirmed by Enter, the display
shows: "Delete Device"?
• When confirmed with the menu key, the device will be
deleted completely.
Menu 3, View RF Devices
Every wireless sensor has a unique factory programmed number,
visible in the RAS. Use this menu to identify the sensor ID number if
required or to identify the type of sensor.
"Unused" will appear instead of an ID number if the zone is not
programmed.
Menu 4, View Zone Status
You can check the status of a zone input sensor. Depending on the
sensor type, there are six possible sensor-warning messages:
Warning Description
Normal Operating normally
Alarm Zone in alarm
Tamper Tamper
Supervision Long or smoke Supervision Fail
Batt Low battery warning
Dirty Smoke detectors only
Menu 5, View signal Level
You can check the received signal level of each sensor here.
If the DGP is powered up after maintenance a sensor will show
signal level 0 until the sensor transmitted an alarm or supervision
message.
A sensor transmits a supervision message every 15 minutes,
a smoke sensor - every 64 minutes.
Checking the receiver sensitivity
To ensure the sensor is installed within an effective range of the
ATS1234 or repeater, the installer can check the signal strength of a
wireless sensor’s last event transmission on the RAS screen.
If a sensor is communicating effectively, it will display a value of –40
dB or less.
Key in the number of the zone and press [ENTER] to view the signal
strength. If the zone isn’t programmed or if the Wireless DGP has
just been powered up, a signal will not been received and the RAS
will display 0 dB:
When a successful signal is received the RAS screen will display the
signal strength in dB and sound two beeps.
For reliable transmission, the sensor’s signal strength must be
between -40 and –100 dB, but it needs to be at least +6 dB above
the RF noise level.
The dB range for the Wireless DGP is from -105 to 0 dB
7
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