View single post by slychiu
 Posted: Tuesday Oct 7th, 2008 09:42 am
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Joined: Saturday Apr 29th, 2006
Location: Singapore
Posts: 5161

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An external door station eg Fermax, DP03X, DS01 connected to DM02 Door station Interface module has high distortion on the external door station speaker  but is clear on the inside keypad or telephone

This may be caused by the incorrect setting of the J5 shunt on the DM02. J5 should be shunted only if connected to a DP03X (not DP03) in order  to turn on the DP03 red LED when the inttercom is in use. The DP03x will NOT operate well  if J5 is not  shunted. For all other door stations (Fermax or DS01) leave the shunt off.
The DM02 manual already states that J5 should be shunted only for DP03X but the consequences have been spelt out more clearly in the revised manual 1.0.8 at

Last edited on Friday Oct 10th, 2008 08:19 am by slychiu

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