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ERE DC485USB Manual Download Page 6

ERE S n.c.                                                                  DC485USB: Instruction Manual                                                         Revision: 1.0

Page 6 of 7

If the 

PWR signal

 is not used, the connecting cable may contains only 3 wires plus the shielding braid. 

5.0

 

Mechanical characteristcs

.

The following Figure 4 shows the mechanical outline of the DC485USB Converter. All dimensions are in millimeters
(inches). 

Summary of Contents for DC485USB

Page 1: ...ser must therefore take the above equipment to the appropriate differentiated collection centres for electronic and electro technical waste or return it to the dealer when purchasing a new appliance of equivalent type in a ratio of one to one Appropriate differentiated waste collection for subsequent recycling treatment and environment friendly disposal of the discarded equipment helps to prevent ...

Page 2: ...e an active High TTL output referred to GND derived from the DTR signal of a RS 232 serial port that may be used as a remote ON OFF switch All these lines are protected against overvoltage with transient voltage suppressors The converter is fed through the USB line and its current consumption is less of 100 mAdc therefore is compatible with all types of USB port On each side of the screw terminal ...

Page 3: ... OFF switch for the external device As the serial port lines also this signal is protected against overvoltages A Supply supervisor circuit controls the reset line of the converter chip to avoid any malfunction due to supply problems The whole device show a current consumption lower than 100 mA therefore it can be connected to any type of USB port and it is completely disabled when the USB port en...

Page 4: ...tatic discharge In these cases is recommended the use of a shielded cable with the precaution to connect its shield only on one side to obtain an equipotential shield Both the A and B lines are protected against overvoltages by the use o transient voltage suppressors 4 0 2 Power PWR line The DC485USB converter is equipped with an auxiliary output signal called Power PWR that may be used as a remot...

Page 5: ...ant if the distance between the converter and the device is considerable and if the negative pole of the remote device feeder is not connected to earth This line may be used to connect also the shield of the cable connecting it only on a side to obtain the maximum screening efficiency 4 0 4 Connections to a remote device using the RS 485 serial port The following Figure 3 shows the connection betw...

Page 6: ...6 of 7 If the PWR signal is not used the connecting cable may contains only 3 wires plus the shielding braid 5 0 Mechanical characteristcs The following Figure 4 shows the mechanical outline of the DC485USB Converter All dimensions are in millimeters inches ...

Page 7: ...ERE S n c DC485USB Instruction Manual Revision 1 0 Page 7 of 7 ...

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