Meridian FT/FR-2W2D/2D-x Bedienungsanleitung
Page 1
Meridian Technologies, Inc.
700 Elmont Road, Elmont NY 11003
Telephone : 516. 285. 1000 Fax: 516. 285. 6300
E-mail : sales@meridian-tech.com Web: www.meridian-tech.com
Document Version 1
05/29/2013
Fiber Optic Video/Data Transmission System
Installation Instructions
Part Number:
FT/FR-2W2D/2D-x (ST/FC)
FT/FR-4W2D/2D-x (ST/FC)
(1 to 4-Channels of Video Tx/Rx and 2-Channels RS-232 Data Transceiver)
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Table of Contents
1.0 Product Description......................................................................3
2.0 Installation.......................................................................................3
3.0 Product Signal Format & Specifications..................................4
3.1 Optical Specifications ..................................................................4
4.0 Data Connector Pin Assignment................................................5
5.0 Signal Conditioning Switch/Jumper Settings.................8
5.1 Data Selection jumpers................................................................8
5.2 Data Format Selection..............................................................9
6.0 SpectraViewTM Network Monitoring ..................................11
7.0 Product Part Numbers................................................................16
8.0 Troubleshooting..........................................................................16
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FT/FR-4W2D/2D-x
Fiber Optic Video/Data Transmission System
Installation Instructions
1.0 Product Description
Meridian’s FT/FR-4W2D/2D-x products are fiber optic modems that transmit one to four
channels of 10-bit uni-directional digitized video and two bi-directional RS-232 data
signals over one optical fiber using digital transmission technologies. This product series
uses Meridian’s standard 1-slot wide chassis mount card assembly and plugs into the
following Meridian chassis: SR-500/S, SR-1001/S, SR-1002/S, SR-1002/S, SR-1200/S,
SR-1500/S, SR-1600/S and SR-2001 & SR-2000 series equipment chassis.
Both ST and FC optical connectors are supported, depending on the part number. An ST
optical interface is available for both multimode and singlemode fiber applications. The FC
optical interface is available only for singlemode products. Conformal coating provides an
additional level of protection from environments with high humidity.
2.0 Installation
Series FT/FR-4W2D/2D-xproducts are one-slot wide cards and, as such, occupy one slot
in Meridian’s standard chassis. To install in these chassis, orient the card with the Meridian
logo at the top of the module and slide onto the top and bottom card guides in the
chassis. Press securely on the top and bottom of the module to ensure that it is fully seated
in the chassis so that the electrical connector mates with the chassis-mounted
motherboard. Once installed, manually tighten the two thumbscrews located at the top
and bottom of the card. Do not use tools to secure these and do not over tighten.
Note:A fully loaded 19” subrack should have forced-air cooling to avoid excessive
heat generation inside the chassis. A fan assembly tray (P/N FA-2000) with three (3) fans
is available and should be installed under the 19" SR-2000/1 whenever possible.
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3.0 Product Signal Format & Specifications
The FT/FR-4W2D/2D-xseries products transmit and receive the following signals:
Signal Type
Channels
Transmit
Receive
NTSC/PAL/SECAM video 1 to 4 FT-4W2D/2D-xFR-4W2D/2D-x
RS-232 (Tx & Rx data) 2Yes Yes
The tables below identify the specifications for the various signals that these
modems transmit/receive. Video
Format NTSC, PAL, SECAM
Voltage/Impedance 1Vp-p, 75 Ohm, 1.5Vp-p (max)
Bandwidth 5 Hz to 7 MHz @ -3 dB
Differential Gain
<
0.6
%
Differential Phase <0.3o
SNR >67dB (weighted)
Return Loss >30dB
Field Tilt <0.5%
Data
Formats RS-232
Date Rate (RS-232) DC to 125 Kb/s
Bit Error Rate (BER) Better than 10-9
Connectors
Video 75 Ohm BNC w/gold center pin
Data RJ45
Optical Singlemode –ST or FC
Multimode -ST
3.1 Optical Specifications
The table below lists the optical specifications for both singlemode and multimode fiber
applications.
Optical Specifications
Fiber Type/Size
(um) Optical
Output
(dBm)
Rx
Sensitivity
(dBm)
Optical
Budget
(dB) Wavelength
(nm) Optical
connector
Optical
Dynamic
Range (dB)
Multimode (FP Laser)
62.5 / 125 -5-25 20 1300/850 ST 25
Singlemode (FP Laser)
9 / 125 -5-25 20 1310/1550
ST, FC 25
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4.0 Data Connector Pin Assignment and Status indicators
The RS-232 channel is used for transmitting/receiving two channels of 2-wire RS-232 (Tx/Rx)
Data Connector Pinout Assignment
Pin # RS-232
1Ch 1 INPUT (RD)
2Ch 2 INPUT (DTR)
3Ch 1 OUTPUT (TD)
4Ch 2 OUTPUT (DSR)
5GROUND
6NA
7NA
8NA
The figures 4.1 & 4.2 show the connector and LED indicator locations for the various
video & data status indicators on the transmitter and receiver modules. There are a number
of diagnostic indicators on the front panel of each module. In addition, each of the video
input/output channels has indicators associated with them to provide quick visual
indications of the channel activity.
These indicators for each of the video channels are listed below:
Indicators Function
Power Green –ON
Diagnostic Green –OK, Red–alarm
TX Carrier Optical output Green –OK, Red–overload
RX Carrier Optical input Green –OK, Red–error
Sync Sync received Green, Red–Load absent
Video Video signal Green –OK, Red–video overload
These indicators for data channels are listed below:
Data Indicators
Function
TD Data input Ch.1 Green
RD Data output Ch.1 Green
TC Data input Ch.2 Green
RC Data output Ch.2 Green
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Figure 4.2
FR-4W1C1G/1C1G-xFront Panel Layout Diagram
Figure 4.1
FT-4W2D/2D-x Front Panel Layout Diagrams
Page 7
Figure 4.2
FR-4W2D/2D-x Front Panel Layout Diagrams
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5.0 Signal Conditioning Switch/Jumper Settings
The sections below illustrate how to change the various contact mapping conditions.
For jumper and switch locations see Figure 5.2
5.1 Data Selection jumpers
There are four (4) 3-pin jumpers located directly behind the RJ45 front-panel mounted
connector.
The top 3 jumpers are used for 2 & 4-wire RS-485 selection and removing the default
120Ohm load on the RS-422 input channels.
The bottom jumper (Jp.4) used to select the power-on state of the contacts (NO or NC).
The illustration below describes the function of each of these 4 jumpers. The jumpers are
shown in their default condition in Table 1.
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5.2 Data Format Selection
A group of 10 switches is located on the bottom center of the module’s circuit card (see
Figure 5.2). The left two (2) of these switches control the data format that is
transmitted/received. These switches on both the transmitter and receiver must be set
the same in order to have proper data communications format between them. FT and FR
modules can be configuring different for data format conversion (see Figure 5.1)
The figure and table below illustrates these switch locations on the board and how they
are configured for the proper data format options. The factory-supplied default setting
is for RS-232 data (Switch #1-2 OFF (up)).
Data Format Selection
witch Settings
Switch #1 Switch #2
RS-232 OFF (up) OFF (up)
Switches 3 and 4 should set by Meridian technician.
The illustration below describes the function of each of these switches.
Figure 5.1
Page 10
Figure 5.2
1-Slot Module Data Format Selection Switch Location
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