889-1600-04
Model P-1400 Operations Manual Rev Apr 2020 Page
28
of 33
next sensitivity threshold. Usually, the larger the vehicle detected, the more bargraph segments displayed, i.e. the
greater the -
∆
L/L. The bargraph can be used to select the proper sensitivity level.
The bargraph below shows the deflection (3 segments) of a vehicle with Sensitivity set to Level 5. The vehicle in
the loop zone is causing a change of inductance greater than 1.28% -
ΔL/Lo
r Sensitivity Level 3.
The bargraph below has the same vehicle in the loop zone causing the same inductance change as above. Because
the sensitivity setting was increased to Level 8, six segments are now displayed. If the bargraph displays 5 or 6
segments for a vehicle in the loop, the sensitivity has been set to the proper range.
5.12
FULL RESTORE TO FACTORY DEFAULT SETTINGS
Pressing all four front panel pushbutton switches simultaneously and continuously for five (5) seconds restores all
factory default settings. The countdown of the five second period is displayed on the LCD. Releasing any or all of
the switches before the countdown ends aborts the full restore operation. (See Section 3.5 for default settings).
Refer to Section 5.0 for details.
Caution: Restoring the factory default settings will clear all previously
programmed settings including any mapped output(s).
5.13
DIAGNOSTIC FEATURES ACTIVATION
When the detector is operating in normal mode, pressing either the
(UP) or
(DOWN) pushbutton will
temporarily activate Option 1 (Loop Inductance Display) and Option 2 (Loop Inductance -
ΔL/L Display) for all
loop inputs and Option 6 (Audible Detect Signal) for the loop input indicated in the lower portion of the LCD. All
three of these diagnostic options will remain active for 15 minutes.
5.14
DISPLAY TEST
Pressing any two or three of the front panel pushbutton switches simultaneously will turn on all possible symbols
and messages on the LCD screen.
5.15
CHANGING PROCESSOR BOARD OR MOTHERBOARD
The P-1400 detector stores user-programmed parameters on an internal EEPROM mounted on the processor board
and on an EEPROM mounted on the motherboard. This allows the user to change the processor assembly or
motherboard and reset the parameters that were programmed for that particular site. When a new processor
assembly or motherboard is installed, an Error message will appear on the LCD. The LCD will alternate between
Cpy
and
In
. This message means that the parameters stored on the motherboard mounted EEPROM do not match
the parameters stored on the EEPROM on the processor board. If the motherboard was replaced, pressing the
FUNC
pushbutton will accept the parameters stored on the EEPROM on the processor board and store them on the
motherboard mounted EEPROM. If the processor board was replaced, pressing either the
(UP) or
(DOWN)
pushbutton will change the alternating message on the LCD to
Cpy
and
Out
. Pressing the
FUNC
pushbutton will
SENSITIVITY 10 9 8 7 6 5 4 3 2 1
%
of Inductance 0.01 0.02 0.04 0.08 0.16 0.32
0.64 1.28 2.56 5.12
The Bargraph is a window that adjusts to the sensitivity setting
.
1
©
SENSITIVITY 10 9 8 7 6 5 4 3 2 1
%
of Inductance 0.01 0.02 0.04 0.08 0.16 0.32
0.64 1.28 2.56 5.12
The Bargraph is a window that adjusts to the sensitivity setting
.
©
