Related Manuals for American Fibertek MTX-8485
Summary of Contents for American Fibertek MTX-8485
- Page 1 Instruction Manual MTX-8485 MRX-8485 Four Channel Video Multiplexer with Bi-directional Data © Copyright 2003, American Fibertek, Inc. 0530JD...
- Page 2 Table of Contents...
-
Page 3: Table Of Contents
Power Source ..................5 Power Connection ................5 Input / Output Connections..............5 Data Configuration ................6 MTX-8485 Status LED Indicators ............8 MRX-8485 Status LED Indicators............9 Data Termination Requirements............10 Offset Bias - RS485 Data Signals ............ 11 Warranty................... -
Page 4: Functional Description
THE INSTALLATION OF THESE UNITS SHOULD BE MADE BY A QUALIFIED SERVICE PERSON(S) AND MUST CONFORM TO ALL LOCAL CODES. To install the MTX-8485 or MRX-8485 it is first necessary to mount the rack flanges to the unit. For rack mounting the ears are installed on the... -
Page 5: Power Source
For mounting the unit flush to a wall or other rigid surface, the ears may be installed on the sides with the oval holes flush with the bottom of the unit as in Figure 2. Mount the ears with the #10 flathead screws provided. -
Page 6: Data Configuration
The figure below identifies the specific connections for the RS422 / RS232 data connections. DATA CONFIGURATION This link accommodates transmission of: 1) 1 bi-directional RS485 (2 wire or 4 wire) data channel, or 2) 1 bi-directional RS422 data channel, or 3) 1 bi-directional RS232 data channel, or 4) 1 bi-directional RS232 data channel and 1 bi-directional RS422 data channel. - Page 7 Below is an illustration of the data configuration switches that identifies the specific switch function and up/down direction for RS485 transmission. The following is an illustration of the data configuration switches that identifies the specific switch function and up/down direction for RS422/RS232 transmission.
-
Page 8: Mtx-8485 Status Led Indicators
LED indicates data is present at the output terminals of the MTX-8485. When configured for RS-485, an active Hi-Z LED indicates the MTX-8485 has seized the data line to allow data flow. The intensity of the indicators will vary with input data patterns, however, the Hi-Z LED will typically appear dimmer than the data Tx and Rx LEDs. -
Page 9: Mrx-8485 Status Led Indicators
A bi-color LED indicator monitors the optical input signal that is being sent to the MRX- 8485 from the four video channels of the MTX-8485. AC power and optical input status associated with this LED are summarized below. Please note that data is sent as a subcarrier on channel one’s video signal. -
Page 10: Data Termination Requirements
RS422 data inputs or outputs. In long copper runs (over 500 feet) termination resistors may be required to eliminate data reflections. Termination resistors for RS422 data can be selected in the MTX-8485 and MRX-8485 using switch #2 and switch #5. RS485 Data Signals RS485 differs from RS422 in the ability of the transmitter devices to go into a high impedance (Hi-Z) state. -
Page 11: Offset Bias - Rs485 Data Signals
300 mV offset, improving noise immunity. Offset bias for four wire RS485 can be applied on the MTX-8485 and MRX-8485 by setting switch # 1 and switch # 3 down. Please note that these switches work as a set and must be either both down or both up. -
Page 12: Warranty
Jersey shall have exclusive jurisdiction over this contract. EXCEPT FOR THE FOREGOING WARRANTY, THERE IS NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE, EXPRESSED OR IMPLIED, WHICH EXTENDS BEYOND THE WARRANTY SET FORTH IN THIS AGREEMENT. In any event, American Fibertek will not be responsible or liable for contingent, consequential, or incidental damages.