Installation Manual

14
Terminal Block, Output Signals
All status outputs will be provided via relay contact closure. These contact closures will be provided via
terminal block to the user. The name and description of each output is shown below.
Busy Contact
Normally Open contact closure becomes shorted whenever the DFT120 is processing a page. This would
include the record and play processes, repeats and delays, recording playback tones, etc.
Play Contact
Normally Open contact closure becomes shorted whenever the DFT120 is playing audio through the output.
It will be shorted during the pause between the message repeats but not during the delays between differ-
ent messages within the play sequence. The Play output will be shorted when the Override Input is active.
Rec Contact
Normally Open contact closure becomes shorted whenever the DFT120 is actually recording a page into
memory. It will not be activated just because the Record input is active, but only when the DFT120 is
actually storing data.