12
OPERATION
When the 3185E is connected to a DC power source, the Power/Valid Digit LED CR14 on the
front edge of the PC board will be illuminated. This LED indicator will continue to illuminate until
a valid DTMF digit is detected or DC power is removed from the board.
The Valid Sequence LED CR15 will illuminate upon the decoding of a correct DTMF code tone
pair in the proper sequence. Upon the fourth correct digit, the output relay activates and the
Relay Output LED CR13 illuminates.
During the reception of valid DTMF tone pairs in a sequence the 3185E will
— after decoding a
valid code number
— wait for the next valid code in the sequence. If the time between digits is
more than 3 seconds, the 3185E will reset and require that the sequence be sent completely
again.
Operating With a 4-Digit Code:
When a 4-digit code sequence is selected on the 3185E the switch program will be as follows:
SWITCH 1
= first digit of the code sequence for both 'ON' and 'OFF'.
SWITCH 2
= second digit of the code sequence for both 'ON' and 'OFF'.
SWITCH 3
= third digit of the code sequence for both 'ON' and 'OFF'.
SWITCH 4
= fourth digit of the code sequence for 'ON' (preset to '
*
' if switch not installed).
SWITCH 5
= fourth digit of the code sequence for 'OFF' (preset to '
#
' if switch not installed).
If the 3185E is programmed for momentary relay output or alternating relay action SWITCH 5 is
not used for programming.
Operating With a 3-Digit Code:
When a 3-digit code sequence is selected on the 3185E the switch program will be as follows:
SWITCH 1
= first digit of code sequence for both 'ON' and 'OFF'.
SWITCH 2
= second digit of code sequence for both 'ON' and 'OFF'.
SWITCH 3
= third digit of code sequence for 'ON'.
SWITCH 4
= third digit of code sequence for 'OFF' (preset to '
*
' if switch not installed).
If the 3185E is programmed for momentary relay output or alternating relay action SWITCH 4 is
not used for programming.
