Pacific Research Solutions PET-820 - Manual (Page 12)

Pacific Research PET-820 User Manual
Page 11
OPERATING INSTRUCTIONS
3.0 OPERATING
The operating commands are the principle means for the user to control the PET-820's basic operations. These functions
typically do not change the characteristics of the system but only turn on, off, or interrogate conditions of the system. The
operating commands can be issued either from a telephone or by the optional local keypad display.
3.1 PRINTED CIRCUIT BOARD INDICATORS
There are two LED or indicators located inside of the terminal cover. These LED's are used for monitoring the status of the
PET-820. The left indicator, (green LED), indicates the operation of the PET-820. If this LED is flashing it is indicating that
the PET-820 is no longer operating. This may occur due to low battery voltage or certain types of hardware or software
failures. If this LED continues to flash see the trouble shooting section of this manual in order to determine the problem.
The LED on the right indicates the operating mode of the PET-820. This is a two color indicator, red and green, and is used
to display the status mode of the system. Reference the following table as to the modes that this LED may display. Also note
that the LED will flash red upon receiving a ring signal from the telephone line.
COLOR FLASH RATE DESCRIPTION
None None One or more loop circuits are set, the unit is not ready to arm.
Green Steady All loop circuits are clear and the unit is ready to arm.
Green Fast flash One or more inputs are turned off but all other loop circuits are clear and the unit
is ready to arm.
Grn/Red Slow flash Unit is in ARM delay mode (user exit delay).
Red Slow flash Unit is in ARM mode.
Red Fast flash Unit is in ALARM mode.
Red Steady Unit is in communication mode, off hook.
3.2 KEYPAD DISPLAY PANEL (OPTIONAL)
The keypad/display can offer additional operating and programming flexibility. It also provides for a local voice telemetry
and detail display of system status. All aspects of the keypad display are identical to operating the unit by telephone, except
that the system password is not required.
3.2.1 POWER INDICATOR
This indicates the correct operation of the PET-820. The PET-820 includes hardware which will monitor this operating
integrity of the software and hardware. When a failure is detected the monitor hardware will attempt to restart the PET's
program. If the program cannot be restarted successfully, this indicator will go out.
3.2.2 COMMUNICATE INDICATOR
This indicator has two functions. First, it will identify when the PET-820 is off hook (connected to the telephone line).
Second, it will indicate when an incoming call is ringing the PET-820. In the ringing mode the indicator will flash once for
each ring.