Introduction
About the MTP 15HD Decora® Receiver
The Extron MTP R 15HD RSA D is a mini twisted pair (MTP) receiver, in a Decora form factor, that auto-detects between audio or RS-232 serial data on the audio/RS-232 wire pair. The receiver is compatible with the entire line of Extron MTP 15HD transmitters and associated MTP products.
The Extron MTP transmitters and receivers comprise a system for long-distance distribution of VGA or other high resolution video and either audio or RS-232 communications.
The MTPs transmit and receive over Extron’s Enhanced Skew-Free A/V UTP cable or over CAT 5, 5e, or 6 shielded twisted pair (STP), unshielded twisted pair (UTP), or foil shielded twisted pair (FTP) cable.
A compatible MTP transmitter inputs high or low resolution video signals (RGB, tri-level and bi-level component video, S-video, or composite video) and a wire pair that is either RS-232 serial signals or stereo audio. If the audio/RS-232 input is audio, the transmitter sums the left and right audio channels to convert the audio to mono (L+R) format. The transmitter converts the inputs to a proprietary signal and outputs that signal on an RJ-45 connector.
The MTP receiver inputs the transmitted proprietary signal on an RJ-45 connector, converts the video portion of the signal back into its original resolution, and outputs it locally on a 15-pin HD connector. Level and peaking controls allow you to enhance the video output for optimum display.
The receiver also detects whether the input on the audio/ RS-232 wire pair is audio or serial data, converts it back to the appropriate format, and outputs the signal on a 5-pin captive screw connector.
The receiver is shipped with an external 12 V power supply that accepts 100 to 240 VAC, 50 Hz or 60 Hz input and provides worldwide power compatibility.
RS-232 function
When the audio/RS-232 portion of the TP link is RS-232, it is either unidirectional or bidirectional, selectable by a DIP switch.
NBy default, the RS-232 portion of the TP link is unidirectional only from the transmitter to the receiver. If there is only one receiver in the system, you can set it to be bidirectional. When bidirectional is selected, the receiver can receive commands from the transmitter and pass RS-232 responses back to the transmitter. See the BI-RS232 DIP switch description in "Rear panel features", on page 2-7, to allow bidirectional RS-232 communications.
The RS-232 link:
•Supports software flow control (XON, XOFF).
NHardware flow control is not supported.
•Supports full duplex and half duplex operation.
•Supports any baud rate (up to 38,400), data bits, parity, stop bits, and data format without configuration.
NHigher rates are possible, but performance varies as a function of baud rate and TP cable length.
Twisted Pair (TP) Cable Advantages
Twisted pair cable is much smaller, lighter, more flexible, and less expensive than coaxial cable. These TP products make cable runs simpler and less cumbersome. Termination of the cable with RJ-45 connectors is simple, quick, and economical.
Transmission distance
NVGA video transmitters provide pre-peaking, which boosts the signal before it is transmitted.
The maximum distance is determined by the frequency and resolution of the signal that is input to the transmitter. The table on the next page specifies the recommended maximum transmission distances and transmitter Pre-Peak switch positions (refer to the applicable transmitter manual) using Extron Enhanced Skew-Free A/V UTP cable or UTP CAT 5, 5e, or 6 cable, terminated with RJ-45 connectors.
NIt is possible to exceed the recommended distance; however, image quality may be reduced.
NResolutions marked with an asterisk (*) in the table on the next page have the same range specifications at 75 Hz.
