Adjusting The Voltage Of The Optics Controls; Connecting The Pan&Tilt And Optics Cables; Setting The Receiver For Preset Functions - Videotec DTRX3 Manuel D'instructions

Adjusting the voltage of the optics controls

• connect the power supply cable and power the DTRX3 unit (LD1 lit up)
• insert a load between terminals FOCUS NEAR and FOCUS FAR to absorb at least 10 mA (use a resistor from 100
to 1000 ohm).
• position the tester prods on terminals FOCUS NEAR and FOCUS FAR
• keep one of the two FOCUS keys on the control unit pressed down
• adjust the control voltage of the optics by adjusting trimmer TR1 (default 12V
NB: don't make unloaded voltage regulation (without inserting the load) otherwise the adjustment will be incorrect.
Connecting the pan&tilt and optics cables
WARNING!: Before carrying out the following operations make sure that the pan&tilt control voltage and the
setting for optics type are correct.
• disconnect the power supply to the unit
• make the connections with the optics and pan&tilt
• reconnect the power supply to the unit
For optics and pan&tilt with PRESET functions (PAN,TILT, ZOOM, FOCUS and IRIS, VCC and GND), the
maximum length of the preset cables should not exceed 5 metres, otherwise positioning on the stored positions will be
incorrect.

Setting the receiver for PRESET functions

The DTRX3 receiver has integrated preset functions (for pan&tilt and the optics). It is possible to store up to a
maximum of 14 positions using the standard Videotec protocol or up to a maximum of 40 positions using the MACRO
and Pelco D protocols. All positions can be recalled using the keyboard with the Scan and Patrol functions. The
receiver is able to make a test to automatically detect which preset functions are present and configuring the device is
therefore a simple operation. However, it is necessary to take certain precautions:
• Before making the receiver test (to determine which preset functions are active), make sure the cables for pan&tilt
and the optics have been connected correctly
• For the preset cables (PAN, TILT, ZOOM, FOCUS, IRIS, VCC and GND) use cables with a maximum length of 5
metres
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MNVCDTRX301_1623_EN