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Telephone Line Supervision
When a telephone string file is selected to play out channel 1, channel 1's line out is supervised for connection to a telephone line.
The telephone line is supervised by monitoring the telephone line's DC voltage and by detecting the proper call progress tones. If
either of these two parameters are not correct, the AVL-1 will indicate a trouble condition.
Telephone string files are also supervised for correct reception by the intended party. If three consecutive call attempts to the
same phone number go unanswered and/or unacknowledged, the AVL-1 will indicate a trouble condition.
Standby Battery Calculations
To calculate standby battery ampere-hour capacity needed to back-up the AVL-1 system power based on maximum input current
and number of output channels utilized, refer to the "Technical Specifications" section of this manual.
Note the indicated "stand-by" and "alarm" currents for the channel options supplied with your AVL-1 model. Calculate the battery
capacity needed for the AVL-1 equipment based on the required hours of standby and alarm operation for your control system.
Add this AVL-1 capacity requirement to the capacity required for the rest of your control system.
Access Key and Password Protection
The AVL-1 incorporates access key and password protection to prevent unauthorized use of the keypad. Passwords may be any
number from 0 to 999. The password must be entered correctly to access any system functions.
The initial password is 111
passwords are given in the "Setup" section of Appendix C.
Once the password is entered correctly, the user has access to all system functions. If at any time the user has accessed a
system function, but failed to utilize it for at least five minutes, the accessed system function will cease and the enter password
screen will be displayed. The password then must be re-entered and the system function reaccessed.
NOTE: The access key and password should only be given to authorized and properly trained personnel who are responsible for
the operation, testing, and maintenance of the AVL-1.
Memory Retention Battery
The AVL-1 contains a memory retention battery to power the PSRAM IC's during periods when input power has been disconnected
from the AVL-1. The battery's only function is to prevent the message files stored in the PSRAM IC's from being lost. The memory
retention battery powers no other circuitry.
The AVL-1 contains battery charging circuitry to maintain the battery at full charge. The charging circuitry has two charging rates,
fast charge and trickle charge. The fast charge cycle is initiated whenever input power is connected to the AVL-1 and lasts for 24
hours. After 24 hours the fast charge cycle is terminated and the trickle charge cycle is initiated and will remain on as long as input
power remains connected to the AVL-1.
The memory retention battery duration times for new fully charged batteries during periods of power loss, is shown in Table 1
below.
NOTE: The memory retention battery in the AVL-1 is shipped in a completely discharged state.
CAUTION:
WARNING:IF THE INPUT POWER IS DISCONNECTED AND THE MEMORY RETENTION BATTERY IS OR HAS BEEN
DISCONNECTED OR DISCHARGED, ALL MESSAGES IN THE PSRAM IC'S WILL BE ERASED. IF STORED MESSAGES ARE
ERASED, THEY WILL NOT BE DELIVERED TO THE AUDIO SYSTEM WHEN INPUT POWER IS RESTORED. THIS COULD
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH TO YOU AND/OR OTHERS.
If for any reason the input power is disconnected and the memory retention battery is or has been disconnected or discharged and
all messages in the PSRAM IC's are erased, all messages will have to be reprogrammed into the Series
AVL-1 once input power is reconnected.
AVL-1 Manual
Rev. H August 2000
www.PDF-Zoo.com
. It is strongly recommended that this password be changed. Instructions for changing
As batteries age, they lose their ability to charge completely. The memory retention battery should be replaced
at least once per year to ensure optimum battery performance.
Memory Retention Battery Backup Duration
for New Fully Charged Batteries During Periods of Power loss
Number of
Memory IC's
1
2
3
4
5
6
7
8
firealarmresources.com
Minimum
Typical
(Hrs)
3000
1500
1000
750
600
500
428
375
Table 1.
(Hrs)
6000
3000
2000
1500
1200
1000
857
750
Sheet 16 of 41
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