Videotec DTRX3 User Manual download pdf (Page 47)

Page 17 MNVCDTRX301_0850

9 Use of the alarm contacts

The 4 alarm contacts of DTRX3 receiver are associated with the first four preset positions; as soon as the

alarm is activated, the positioning device and the lens adopt the corresponding preset position; the last alarm

activated takes always priority. The DTRX3 can also receive an alarm command even through the DCS2 and

DCS3 control keyboards (which in turn receives it from the SM84B/SM164B or SM328B matrix); in such case

the positioning device and the lens move themselves into the preset position N

o 1.

In order to use the alarm contacts it is necessary to set the SW4 according to the following instructions:

• dip 3 of SW4 set to the ON position: the alarm contacts are activated

• dip 3 of SW4 set to the OFF position: the alarm contacts are deactivated

• dip 4 of SW4 set to the ON position: the alarm contacts are normally open

• dip 3 of SW4 set to the OFF position: the alarm contacts are normally closed

9.1 Operation mode of AUX4

Switches: dip 5 of SW4

Settings:

• dip 5 of SW4 on OFF position: normal operation

• dip 5 of SW4 on ON position: AUX4 is activated on alarm and deactivated when the alarm signal stops.

10 Local keys for P&T motor movement

The DTRX3 receiver has 4 local arrow-keys (on board) for the P&T motor movement in the 4 directions (Up,

Down, Left, Right, see figure at page 7). These keys are very useful during P&T motor installation in order to

control the position of limit switches and/or the right setting of the P&T motor. The arrow-keys have total priority

and, when pressed, they deactivate at the moment the receiver remote use (by keyboards). When the arrow-

keys are released the receiver functions are fully restored.

The combination of Up key and reset key is used to carry out the auto-test (see chap. relevant to Test of DTRX3 receiver).

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Videotec DTRX3 User Manual Page 47