Power Supply Considerations For Receivers And Transceivers; Receivers; Transceivers; Power Indicator - Wireless Solution W-DMX TRX Implementation Manual

4 Power Supply Considerations for Receivers and

Transceivers

Transceivers and receivers have very different power requirements. Please read the following
information carefully together with the electrical specifications at the end of this document.

4.1 Receivers

For a receiver only implementation a simple linear voltage regulator such as the common
7805 series is sufficient. Be sure to choose a package with sufficient cooling capabilities. A
TO-220 or D-Pak is usually a good choice.
4.2 Transceivers
As transceivers can draw high currents when transmitting, a more sophisticated solution is
generally required. It is especially important to make sure the supply can handle the brief
peaks.
The W-DMX cards have built in under voltage detection which protects the system from
permanent electrical damage, but data loss might still occur.
If the transceiver card is used as an RDM receiver, then you also need to take into
consideration the current used during transmission.

4.3 Power Indicator

The W-DMX card is equipped with an on-board green Power Indicator LED, which is lit
when the card is powered properly.

5 Interface Connectors, J1 and J3

The connectors J1 and J3 provide pins for power, DMX data, control signals and user
interface.
Pin 1, 2, and 3 of J1 will function as a DMX/RDM input on a Transmitter card and as a
DMX/RDM output on a Receiver card.
No provisions are made on the W-DMX TRX card for the secondary DMX data connections,
or any other form of data, that is sometimes carried by Pin 4 & 5 on 5 pin DMX XLR
connectors, and as such these two extra pins should never be connected to any pin on the
radio card.

5.1 Connector Types

J1 and J3 are both commonly available standard dual row 2.54mm (0.1") pitch pin headers
J1 and J3 are located in such way so that they together fit in a 24 pin header.
Revision 4 Wireless Solution Sweden Sales AB
Stureparksvägen 7 – 451 55 Uddevalla – Sweden
Author: Anders Zellén
+46 522 511 511 Tel. +46 522 440 885 Fax.
Wirelessdmx.com sales@wirelessdmx.com
9(23) 14/11/2014