Digital Alert Systems 637 Manual de instruções - Página 12
Procurar online ou descarregar pdf Manual de instruções para Conversor de multimédia Digital Alert Systems 637. Digital Alert Systems 637 16 páginas. Dual tone decoder
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Input Impedance:
Input impedance may be either 10 kΩ or 600 Ω. The J2 jumper determines the input impedance of the
3185E. Install a jumper at position J2 to terminate the audio input in 600 Ω. Consult FIGURE 3 for the J2
jumper location.
Input Balanced/Unbalanced:
The input may be selected to be balanced or unbalanced. The J1 jumper determines whether the input
is balanced or unbalanced. Removing the short from J1 will make the input balanced. Consult FIGURE 3
for the J1 jumper location.
5 Minute Restoral:
The 3185E may be selected to restore the output status for a power interruption of less than five
minutes. The 3185E is factory set to enable this restoral. The J7 jumper is open. To disable the five
minute restoral install a jumper on J7. Consult FIGURE 3 for J7 location.
Momentary Output for ON & OFF:
This setting provides a momentary output relay activation for both the ON sequence and the OFF
sequence. Momentary duration is 1 second. To enable this feature, install both J3 and J4.
Output Relay:
The output relay on the 3185E may be set in three different modes of operation; latching, momentary or
alternate action (toggling). The 3185E is factory set to latching.
Being set at latching means the output relay will energize when the pre-programmed 'ON' code is
received or the 'Set' input is momentarily connected to circuit common. The output relay will remain
energized until the preprogrammed 'OFF' code is received or the 'Reset' input is momentarily connected
to circuit common.
When the output relay is programmed to operate in the momentary mode, it will energize for the duration
that the last valid digit is present. In the momentary mode the 3185E will not respond to its pre-
programmed 'OFF' code.
Alternate action programs the relay for latching (toggling) relay output. In this mode the output relay
energizes and de-energizes with the same pre-programmed 'ON' code sequence.
10 Second Pulse:
If both 'Set' and 'Reset' are low and the relay mode is 'momentary', then when a valid 'ON' sequence of
digits is received, the relay is turned on for 10 seconds then 'OFF' – even if the last tone is still present.
The decoder will ignore all tones and 'Set' and 'Reset' activities during the 10-second period. Applies
only to firmware version 80154-1.10 and later.
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