PERIODIC STATUS REPORTING
An internal timer is incorporated to allow periodic status reporting. The time interval for status reporting is selected at switch package DS-9. The time interval may be set from one hour to 63 hours in one hour increments. To disable the periodic status reporting feature, place switch 7 of switch package DS-9 to the ON (right) position. This allows Channel F to be used to monitor external alarm contacts. To utilize periodic status reporting, leave the shorting strap between terminals 11 and 12, and select the desired time interval at DS-9. Place switches in the ON (right) position to increase time interval. Times are additive. Example: Placing switches= two and three in the ON position will yield a 24-hour interval (16 + 8 = 24). Leave switch 7 in the OFF (left) position.
LOW BATTERY REPORTING
Low battery voltage reporting is a standard function of the AMT-8TD transmitter. An internal circuit monitors the battery voltage when the AC power is off, and reports "Low Battery" when the voltage level of the standby battery drops to a level below which the AMT-8TD will not operate. On applications where this function is not required, the transmitter may be furnished without the battery voltage monitor. In such cases input Channel H may be used to monitor external contacts.
INTERNAL AC POWER MONITOR
An internal circuit on the AMT-8TD control monitors the AC power and trips Channel G if the AC power supply fails. To utilize the internal AC monitor feature, leave the shorting strap between terminals 13 and 14 and select the desired trip delay time with switch package DS-7. To disable the internal AC monitor circuit, cut jumper J9. This allows Channel G to be used to monitor external alarm contact.
SETTING DELAYS FOR TRIP CIRCUITS
Slide switch packages DS-1 through DS-8 are used to set the time delay for the trip circuits (DS-1 for Channel A, DS-2 for Channel B, etc.) Each slide switch package has seven individual switches. Place switches in the ON (right) position to increase delay time. Delay times are additive. Example: Placing switches 4, 5, 6, and 7 in the ON position will yield a delay time of 60 seconds.
i.e. (32 + 16 + 8 + 4 = 60)
CONNECTING TRIP CIRCUITS
Terminals 1 through 16 are used to connect to dry contacts of external monitoring devices. Table 1 shows the alarm codes transmitted for each pair of terminals. As supplied, all trip circuits are set up to monitor normally closed contacts that open to signal an alarm condition. They may be converted to monitor normally open contacts by cutting jumpers on the AMT-8TD control module (lower circuit board)
Table 1 shows which jumper to cut for each alarm input channel.
| Input Channel | Terminals | Alarm Code Transmitted | Delay Switch | Jumper to cut for N.O. Input | |||||||||||||||||||||||||||||||||||||||||||||
| A | 1 and 2 | 8 | DS-1 | J1 | |||||||||||||||||||||||||||||||||||||||||||||
| B | 3 and 4 | 7 | DS-2 | J2 | |||||||||||||||||||||||||||||||||||||||||||||
| C | 5 and 6 | 6 | DS-3 | J3 | |||||||||||||||||||||||||||||||||||||||||||||
| D | 7 and 8 | 5 | DS-4 | J4 | |||||||||||||||||||||||||||||||||||||||||||||
| E | 9 and 10 | 4 | DS-5 | J5 | |||||||||||||||||||||||||||||||||||||||||||||
| F(1) | 11 and 12 | 3 | DS-6 | J6 | |||||||||||||||||||||||||||||||||||||||||||||
| G(2) | 13 and 14 | 2 | DS-7 | J7 |
| H(3) | 15 and 16 | 1 | DS-8 | J8 |
(1) See "PERIODIC STATUS REPORTING" for further information.
(2) See "INTERNAL AC MONITOR" for further information.
(3) See "Low BATTERY REPORTING" for further information.
SYNCHRONIZING START TIME FOR PERIODIC STATUS REPORTING
After selecting the time interval for periodic status reporting, it may be synchronized to report at specific times. The periodic status reporting timer may be reset by shorting terminals 21 and 22 together. The timer will begin counting down the instant that the short is removed, and will trip the transmitter at the end of the selected time interval.
Please refer to following beige sheets that show the locations and additional configuration of the 28 position barrier strip.
Updated 3/98