Videotec DTMRX2 - Manual (Page 32)

Page 6 MNVCDTMRX2_0351
4.4 Cables
In the diagrams given as examples different types of lines have been used to show cables with different
functions:
video cable:
coaxial RG 59 or equivalent cable.
multipolar cable:
each pan & tilt control function is activated /deactivated by a relay inside the receiver.
Determine the final number of cables by following the instructions given below:
• 7 wires for pan & tilt movements: right, left, up, down, autopan, common, earth
• 6 wires for lens control with reverse polarity (zoom, focus, iris)
• 4 wires for lens control with common wire (zoom, focus, iris)
• 2 wires for the auxiliary
• 3 wires for the power supply cable
Note: we advise the use of different multipolar cables for low voltage and high voltage functions.
Minimum recommended cross section:
• 0.56 mm² (AWG 20) for high voltage pan & tilt wires (DTMRX2 receiver)
• 0.75 mm² (AWG 18) for low voltage pan & tilt wires (DTMRX224 receiver)
• 0.34 mm² (AWG 22) for low voltage wires (lens, auxiliary)
• 0.75 mm² (AWG 18) for power supply wires DTMRX2 (LINE, NEUTRAL and Earth)
• 1.00 mm² (AWG 16) for power supply wires DTMRX224 (LINE, NEUTRAL and Earth)
cable for digital reception/transmission of controls:
2 wires for reception from the control unit (twisted pair telephone cable, section 0.22 mm² AWG 24)
2 wires for transmission, if any, to the next receiver in cascade configuration (twisted pair telephone cable,
section 0.22 mm² AWG 24)
Note: the maximum length of the connection is approx. 15 m in RS232 and 1200 m in RS485.
When more than one receiver is connected in cascade, it is necessary to use two separate cables for reception
and digital transmission of the controls between receivers (do not use multiple twin cables)