HySecurity SwingSmart DC Series Programming And Operations Manual page 114

Even if the loop problem self heals, historical
data about detector/loop performance and a
log of Alerts, Faults and Errors can be retrieved
from the Smart DC Controller by downloading
from the RS232 communications port or the USB
port. HySecurity's free START software, a laptop
computer, and a special download cable or USB
cable are required to retrieve and read this data.
Loop Health:
The Hy5B monitors loop health which is comprised
of loop noise, loop step changes and loop
reference changes. Loop health readings
accumulate throughout a 24 hour period and the
accrued readings are posted to the Event Log
each day at midnight. After midnight, the loop
health baseline resets to its highest value of 777.
Example of an Event Log posting (Figure 71):
Figure 71. Hy5B Event Log
Loop Presence:
Loop presence is dependent on "disturbance
effect" of the entire vehicle. Presence determines
how long to hold the "memory" of a stationary
vehicle on a loop before it is forgotten and
ignored. Set the presence of the loop:
z LONG (default) lasts about 20 hours dependent
on call strength and sensitivity setting. The
Hy5B tunes out the "disturbance effect" when
a vehicle is stationary on a portion of the loop,
but keeps the undisturbed (unaffected) portion
of the loop operational.
z INFINITE never drops the call. The INFINITE
setting requires a certain amount of signal
strength. A "threshold" is maintained and it
will hold the call forever. The loop connected
to an Hy5B with this setting may become
nonfunctioning.
114 | www.hysecurity.com SWINGSMART DC PROGRAMMING AND OPERATIONS MANUAL
Table 20. Setting Loop Presence
Sub-menu
Display
Item
PR 0 (LONG)
PR 1 (INFINITE)
NOTICE
Hy5B has ability to continue counting vehicles
passing over loop even though a stationary
vehicle may be on a portion of loop. Controller
and Hy5B detector also exchange pertinent
information, so if a power failure were to occur,
controller can determine if a vehicle is on loop
when power returns.
REFERENCE
Example Site
Scenario
With sensitivity set to
A (AUTO) and a large
sedan stationary on
loop, LONG presence
may hold call for many
hours before vehicle's
p re s e n c e i s t u n e d
out. Then, stationary
vehicle is ignored and
unaffected portion
o f l o o p b e c o m e s
operational. In contrast,
with sensitivity set to
M (MOTORCYCLE),
default threshold only
lasts about 1 hour
before presence of
motorcycle on loop is
tuned out.
A site where standing or
parked vehicular traffic
(on large area loops)
is a daily or consistent
b a s i s , I N F I N I T E
presence setting is a
viable option. When
loop may have vehicles
parked on it for more
than several hours and
it must hold the call, set
presence to INFINITE.
MX3640-01 REV. D ©2018