889-3809-00
Model 2018 Operations Manual Rev Apr 2020 Page
33
of 41
4.1.4.1
JUMPER 1 – DO NOT ALLOW 16 CHANNEL PROGRAM CARD (NO16CH)
When this jumper is installed, the monitor will not accept 16 channel Program Cards. When jumpered and a 16
channel Program Card is inserted, then the monitor will display a
PC AJAR
fault with all three field indications
for channels 1 through 16 flashing. See Section
2.6.2.1
for more information.
4.1.4.2
JUMPER 2 – DO NOT ALLOW 18 CHANNEL PROGRAM CARD (NO 18CH)
When this jumper is installed, the monitor will not accept 18 channel Program Cards. When jumpered and an 18
channel Program Card is inserted, then the monitor will display a
PC AJAR
fault with all three field indications
for channels 1 through 18 flashing. Also, when this feature is enabled, the channel 17 and 18 Red, Yellow, and
Green field indications will not show the function disabled blip when a 16 channel Program Card is installed. See
Section
2.6.2.2
for more information.
4.1.4.3
JUMPER 3 – RED ENABLE MUST BE ONE (RED ON)
When this jumper is installed, the monitor will ensure that the Red Interface cable is plugged in. The monitor will
generate a Red Fail fault whenever the Red Enable input is not active and channel 1 through 16 reds are all off.
Special Function 1 and 2 inputs can be used to disable Red Fail monitoring, if needed. See Section
2.6.2.3
for
more information.
4.1.4.4
JUMPER 4 – MULTIPLE INDICATION & SHORT YELLOW MONITORING ARE
ALWAYS ON (MI/SY ON)
This feature is useful when the user wants to ensure that the Multiple Indication and Short Yellow monitoring are
always active. These functions are normally disabled when the Red Enable input is not active. Installing Option
jumper 4 enables this feature. When installed, the monitor will always perform Multiple Indication and Short
Yellow monitoring. See Section
2.6.2.4
for more information.
4.1.5
WATCHDOG SWITCH
The Model 2018 monitor features a circuit board mounted, two-position toggle switch that can be
used to enable the Watchdog Timer monitoring function. The toggle switch, labeled
WATCHDOG, is located near the center of the circuit board just above the upper Programming
Card guide. When the switch is set to the ENABLE position, the Watchdog Timer monitoring
function is enabled. When the switch is set to the DISABLE position, the Watchdog Timer
monitoring function is disabled. The factory default setting of this switch is ENABLE. See
Section
2.5.7
for more information.
NOTE: The Model 2018 monitor can be factory configured without the Watchdog Timer switch.
If the switch is not present, the monitor will operate with the Watchdog Timer monitoring function
permanently enabled.
4.2
FRONT PANEL LED INDICATORS
The monitor has 64 light emitting diodes (LEDs) used to convey information to the user. These
LEDs are color coded to increase view-ability and intuitiveness of the display. The LEDs used are
ultra-bright to allow viewing of the front panel indicators in direct sunlight. The front panel
display is updated every 16 milliseconds by the monitor.
4.2.1
FIELD STATUS INDICATORS
There are 54 field status indicators, one for each field input. The display is logically organized
into three columns and eighteen rows. The columns are labeled
RED
for Red,
YEL
for Yellow,
and
GRN
for Green indicators. The rows are numbered from 1 to 18, corresponding to the
channel numbers.
The indicator for a field input will be on if the RMS voltage over the last 33 milliseconds is above
the threshold for that type of input. See Section
2.1.4
for the voltage levels for each type of input.
When a fault is detected, the field status is latched and the field input involved in the detected fault
will flash at a 5 Hz rate. The following table lists the information displayed on the Field Status
indicators during the various fault conditions.
