Filter
Top Products
User questions, hints
This chapter tries to explain some of the DMM 4650’s functions that first may seem somewhat surprising
for the user and to provide the amended solution.
Question: Recording a message is suddenly interrupted by the DMM 4650?
Explanation: a) An external contact initiated a sequence with a higher priority (e. g. alarm) than the one of current
user. This reaction is necessary and intended, since no user with a priority level 1 or 2 should
be able to block the alarm functions.
Solution: a) Record the message with the same number (delete? = yes) after the priority sequence ends.
Explanation: b) Audio memory overrun.
Solution: b) Deleting message numbers that are no longer needed re-provides memory, or install additional
audio memory (user 3) in case of need.
Explanation: c) During recording the DMM 4650 has recognized a defect memory address, which is marked as
bad and is no longer available for future recordings (bad block).
Solution: c) Start a new recording using the same message number (delete? = yes).
Question: The message number xx cannot be recorded. The message “access denied” is displayed.
Explanation: a) The number has been assigned to a user with higher priority. You cannot delete this message.
Solution: a) Select another message number.
Explanation: b) This also happens during a remote recording, if the desired sequence for the message mistakenly
has been recorded by the installer, without programming access for users with a lower priority.
Solution: b) User 3 has to delete this message.
Question: How can I test a sequence (only user 3), without audio transmission?
Explanation: The “System setup” > “Bypass” menu provides the possibility to switch the audio bypass relay to
direct connection (input > output) for the duration of the test. This procedure interrupts the audio
connection DMM signals > output; except when the test sequence itself switches off the relay again.
Question: What happens when the operation voltage of 24 volts drops for several seconds during the
transmission of an alarm sequence?
Solution: In case one of the factory preset alarm signals (trigger A3, A4, B1, or B2) was used re-starts the
sequence as long as the alarm button is still pressed.
Question: What do I have to do when the green POWER LED on the front panel blinks?
Solution: The flashing LED is caused by the DMM 4650’s self-test routine. The LED blinks whenever an
error is being detected. Detailed information on the cause of the error are only available to the
service provider (user 3) (see also on page 29). Enter the user 3’s password in the “self-test”
menu, write down the displayed error messages, and using the soft key “quit” you have to delete
all errors one by one.
If the LED starts blinking again, this shows that the error is still present. Look for the cause that
generates the problem and try to solve it - otherwise send the appliance to the manufacturer for
servicing.
48