Wallace Perimeter Security ALPHA - Page 165

Alpha/Delta (Kinetic Operator) Installation and Maintenance Manual Revision 1 - MAY 2023
165
VEHICLE DETECTOR AND LOOP FAULT DIAGNOSTICS
Table 14. Seng Loop Presence
Sub-menu Item Display Example Site Scenario
PR 0 (LONG) With sensivity set to A (AUTO) and a large sedan staonary on
loop, LONG presence may hold call for many hours before vehicle’s
presence is tuned out. Then, staonary vehicle is ignored and
unaected poron of loop becomes operaonal. In contrast, with
sensivity set to M (MOTORCYCLE), default threshold only lasts
about 1 hour before presence of motorcycle on loop is tuned out.
PR 1 (INFINITE) On a site where standing or parked vehicular trac (on large area
loops) is on a daily or consistent basis, INFINITE presence seng
is a viable opon. When loop may have vehicles parked on it for
more than several hours and it must hold the call, set presence
to INFINITE.
HY5B has ability to connue counng
vehicles passing over loop even
though a staonary vehicle may
be on a poron of loop. Controller
and HY5B detector also exchange
pernent informaon, so if a power
failure were to occur, controller can
determine if a vehicle is on loop
when power returns.
Frequency:
Knowing the exact frequency of a loop can be useful as a diagnosc tool, and verifying the stability of the
loop frequency is valuable informaon. To view the actual loop frequency of a specic vehicle detector,
go to the seng for that detector in the Installer Menu, switch the selecon from 0 to 1, and press the
Select buon. The display will show the loop frequency. The frequency is usually between 20,000 to
80,000 Hertz.
Changing the Loop Frequency:
HY5B detectors can never crosstalk. If for any reason, you want to manually change the loop frequency,
change the Installer Menu opon for the desired loop from 0 to 3, and then press the Select buon. Each
detector has a choice of four frequencies. Press the Select buon when the desired frequency seng is
found, and the controller will perform a reset and tune to the new frequency seng.
Call Strength Level:
Knowing the call strength of a detector is valuable because it provides informaon about how well the
loop is actually “seeing” a specic vehicle. For example, it may be useful to check to see if the loop is easily
detecng the middle of a high bed semi-truck. The strength of a detector call can be displayed in real me,
on a scale of 0 to 7. As indicated in the table below, when the Installer Menu seng for a given detector is