Specifications

Siemens Mobility, Traffic Solutions
Sopers Lane, Poole, Dorset
BH17 7ER
Version 10 Page 75 of 120 Status Issued
Last Editor harry.smyth Date 03 November 2014
Document
Name
GENERAL HANDBOOK FOR HEIMDALL
DETECTORS
Doc. No. 667/HB/31900/000
Copyright  Siemens plc 2014 All Rights Reserved
5.7.4.9 Site Calibration
The Kerbside Detector needs to be calibrated to the background noise for each site
before it can work to its optimum performance. This calibration needs to be carried out
for any changes of the detectors orientation or other changes to street furniture on the
pole or in the zone.
The Kerbside will store the calibration information in flash memory so in event of the
detector losing power it will have the same background information on power up. This
background information will be updated during long periods of inactivity in the zone (at
least 10 minutes) and would normally occur over night.
Once installed and aligned the following steps need to be carried out for the initial site
calibration:
(1) In order to allow for single person installation, or where there is no switch to turn off
the detector supply from the controller; connect the ‘Inline Installation Assistance
Cable’ (see section 9.1 of the manual).
(2) Remove the side door and toggle switch 5 (off – on – off), replace side door (detect
LED will be flashing)
(3) Move all equipment (Ladders etc.) away from zone and pole.
(4) Ensure that the zone is clear of pedestrians and that no vehicles are passing (Use of
push buttons to stop traffic is recommended).
(5) Cycle the power to the detector using the ‘Inline Installation Assistance Cable’ or by
other means if not used.
(6) Calibration will take approx. 10s, during which time both the detect LED and the
output LED on the ‘Inline Installation Assistance Cable’ will flash several times.
(7) If the zone has been empty during this time the detectors calibration will be complete
and the Zone needs to be tested.
Note: When using the Inline Installation Assistance Cable the LED will not work properly
if the unused core for the detector relay is attached to ground in the pole top
termination. This must be “Floating”, wired in to a terminal on its own to allow the LED to
operate.
5.7.4.10 Commissioning Steps
When the site calibration is complete the zone needs to be tested to ensure coverage
and detection is acceptable. If the zone testing is not acceptable the detector will need to
be re-aligned and recalibrated before testing again.
(1) If you are using the ‘Inline Installation Assistance Cable’, position it so you can view
the LED from anywhere in the zone. If you have a second person to assist, ensure
that they are positioned outside the detection zone.
(2) Standing sideways to the detector (facing the road) move along the kerb stopping on
every other tactile paving slab for approx. 10s ensuring that the detector holds. Brief
moments of non- detect are quite normal but the detector should predominantly hold
on while you are in the zone.