evertz 7700 MultiFrame Manual
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evertz 7700 MultiFrame Manual

Wideband rf fiber
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1.
OVERVIEW ............................................................................................................................................. 1
2.
INSTALLATION ...................................................................................................................................... 3
2.1. 7708LT CONNECTIONS .............................................................................................................. 4
2.2. CARE AND HANDLING OF OPTICAL FIBER ............................................................................. 4
2.2.1. Safety ................................................................................................................................. 4
2.2.1.1. 7708LT 1310nm FP and CWDM Versions ........................................................ 4
2.2.1.2. 7708LT DWDM Versions .................................................................................... 4
2.2.2. Assembly ........................................................................................................................... 5
2.2.3. Labeling ............................................................................................................................. 5
2.2.4. Handling and Connecting Fibers ...................................................................................... 6
3.
SPECIFICATIONS .................................................................................................................................. 7
3.1. RF INPUT ...................................................................................................................................... 7
3.2. RF MONITOR OUTPUT ................................................................................................................ 7
3.3. OPTICAL OUTPUT ....................................................................................................................... 7
3.4. ELECTRICAL ................................................................................................................................ 7
3.5. PHYSICAL (NUMBER OF SLOTS) .............................................................................................. 7
3.6. COMPLIANCE ............................................................................................................................... 8
3.7. RF SYSTEM PERFORMANCE 7708LT13+7708LRA PAIR ....................................................... 8
4.
STATUS INDICATORS .......................................................................................................................... 9
5.
JUMER POSITIONS ............................................................................................................................ 11
5.1. 7708LT JUMPERS AND LEDS .................................................................................................. 11
BY THE GLOBAL FRAME STATUS .......................................................................................... 11
5.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES .............................................. 11
5.4. FACTORY AND BDM JUMPERS ............................................................................................... 12
6.
DOT-MATRIX DISPLAY ....................................................................................................................... 13
6.1. 7708LT CONTROLLED PARAMETERS ................................................................................... 16

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7700 MultiFrame Manual
7708LT Wideband RF Fiber Transmitter

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  • Page 1: Table Of Contents

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter TABLE OF CONTENTS OVERVIEW ............................. 1 INSTALLATION ............................3 2.1. 7708LT CONNECTIONS ......................4 2.2. CARE AND HANDLING OF OPTICAL FIBER ................4 2.2.1. Safety ..........................4 2.2.1.1. 7708LT 1310nm FP and CWDM Versions ............4 2.2.1.2.
  • Page 2 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1.1. Adjusting the RF Input Power Alarm ................16 6.1.2. Selecting the Input Gain Mode ..................16 6.1.3. Enabling/Disabling Squelch Mode .................. 17 6.1.4. Adjusting the Squelch Mode Threshold ................17 6.1.5. Adjusting the RF Gain ..................... 17 6.1.6.
  • Page 3 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter Figures Figure 1-1: 7708LT Block Diagram ....................... 2 Figure 2-1: 7708LT Module ........................3 Figure 2-2: Reproduction of 7708LT Certification and Identification Label for Models that are Class 1 Laser Products ............... 5 Figure 2-3: Reproduction of 7708LT Certification and Identification Label for Models that are Class 1M Laser Products ..............
  • Page 4 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter This page left intentionally blank Revision 1.1...
  • Page 5 Evertz products are for informational use only and are not warranties of future performance, either expressed or implied. The only warranty offered by Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order confirmation form.
  • Page 6 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter CAUTION If the LNB POWER LED is on, there will be DC voltage for LNB power at the RF INPUT connector. This can damage some test equipment. The user can turn off the LNB power under using the card-edge control system under the LNBV menu item.

  • Page 7: Overview

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter OVERVIEW The 7708LT is a fiber optic transmitter for RF signals in the extended L-Band frequency range and below, for frequencies such as over-the-air DTV. It accepts a single RF input on coaxial cable and provides a single output for optical transmission.

  • Page 8: Figure 1-1: 7708Lt Block Diagram

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter Figure 1-1: 7708LT Block Diagram Page-2 Revision 1.1...

  • Page 9: Installation

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter INSTALLATION The 7708LT comes with a companion rear plate appropriate for a 1RU, 3RU or standalone enclosure as specified at the time of order. SC/UPC, SC/APC, ST/UPC, FC/UPC, FC/APC or ST/UPC optical connectors are available and the type specified at the time of order will be installed.

  • Page 10: 7708Lt Connections

    SC/UPC, SC/APC, FC/UPC, FC/APC or ST/UPC female connector with the optical output from the 7708LT. This connector should be connected to the FIBER IN connector of an appropriate Evertz companion receiver model at the destination end with a suitable fiber optic cable. The 7708LT may transmit 1310nm, CWDM or DWDM wavelengths as indicated by the part number on the card ejector.

  • Page 11: Assembly

    7708LT Wideband RF Fiber Transmitter Symbol: black 2.2.2. Assembly Assembly or repair of the laser sub-module is to be done only at the Evertz facility and performed only by Evertz technical personnel. 2.2.3. Labeling Certification and Identification labels are combined into one label. As there is inadequate space on the product to place the label, it is reproduced here in the manuals.

  • Page 12: Handling And Connecting Fibers

    The transmission characteristics of the fiber are dependent on the shape of the optical core and therefore care must be taken to prevent fiber damage due to heavy objects or abrupt fiber bending. Evertz recommends that the user maintain a minimum bending radius of 5 cm to avoid fiber-bending loss that will decrease the maximum attainable distance of the fiber cable.

  • Page 13: Specifications

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter SPECIFICATIONS 3.1. RF INPUT Number of Inputs: Connector: BNC per IEC 61169-8 Annex A (F-Type Optional) Input Impedance: 75Ω (50Ω Optional) Return Loss: > 15dB Frequency Range: 120MHz-2250MHz Input Power Range: -10dBm to -60dBm AGC Gain Range: 0 to +31.5 dB...

  • Page 14: Compliance

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 7800FR: 3.6. COMPLIANCE Laser Safety: Class 1 laser product for 1310nm FP and CWDM versions Class 1M laser product for DWDM versions Complies with 24 CFR 1040.10 and 1040.11 IEC 60825-1 EMI/RFI: Complies with FCC Part 15, Class A EU EMC directive 3.7.

  • Page 15: Status Indicators

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter STATUS INDICATORS The 7708LT has eight LED status indicators on the front card edge to show operational status of the card at a glance. See Figure 5-1 for LED locations. Two large LEDs on the front of the board indicate the general health of the module:...

  • Page 16: Table 4-1: Led Status Indicators

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter LED # Colour Function LED 1 is red or LED 2 is off or LED 3 is yellow or LED 4 is red or LED 5 is red. LOCAL / LED 1 is off and LED 2 is green and LED 3 is off and LED 4 is green or off...

  • Page 17: Jumer Positions

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter JUMER POSITIONS 5.1. 7708LT JUMPERS AND LEDS Toggle Switch LOCAL FAULT / MODULE OK RF High RF OK RF Low AGC Status LNB Power Status Pushbutton Squelch Status FACTORY FRAME STATUS Serial Upgrade Port Figure 5-1: Location of 7708LT Jumpers and LEDs 5.2.

  • Page 18: Factory And Bdm Jumpers

    ® 5.4. FACTORY AND BDM JUMPERS When shipped from the Evertz facility, the FACTORY and BDM jumpers will not be installed. These jumpers should not be installed for any reason. If jumpers are on these positions they should be removed.

  • Page 19: Dot-Matrix Display

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter DOT-MATRIX DISPLAY Signal and status monitoring and control of the card’s parameters are provided via the four-digit alphanumeric display located on the card edge. The card-edge toggle-switch (see Figure 5-1) is used to navigate through the display menus and the push button is used to select options.
  • Page 20 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter Top Level Level 1 Level 2 Level 3 Level 4 BACK BACK 0 to -60 dBm Default -60 dBm RFTH 0 to -60 dBm UPPR Default 0 dBm MODE MAN (default) OFF (default)

  • Page 21: Figure 6-1: Card Edge Menu Structure

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter Fault status (Default) MODE GAIN DEFD CTRL OUTL (continued) LNBV (-LNB only) 22KT (-LNB only) LNBC (-LNB only) HORZ DISP VERT (default) BACK 0 to -60dBm 0 to -60 dBm RFTH UPPR...

  • Page 22: 7708Lt Controlled Parameters

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1. 7708LT CONTROLLED PARAMETERS To change the 7708LT parameters, select the CTRL menu item in menu level 1. The toggle switch may then be used to select the parameter to change as described below.

  • Page 23: Enabling/Disabling Squelch Mode

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1.3. Enabling/Disabling Squelch Mode Squelch mode will turn off the laser output if the RF input drops below the squelch threshold setting (see section 6.1.4). This feature is useful for triggering downstream automatic main/standby protection switches, and for other such applications.

  • Page 24: Adjusting The Agc Target Level

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1.6. Adjusting the AGC Target Level The target output level to be maintained by the 7708LT when AGC mode is user adjustable. Adjustment of this parameter allows optimal laser depth of modulation and CNR performance to be achieved. A typical value is –20 to –10 dBm, but for optimal performance it is recommended that a spectrum analyzer...

  • Page 25: Configuring The 22Khz Tone

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1.9. Configuring the 22KHz Tone A 22 kHz tone may be combined with the LNB voltage for universal LNB local oscillator control. The 22KHz tone can be enabled or disabled via the 22KT selection menu. To select the 22KHz tone, select the CTRL menu item in the first menu level, then use the toggle switch to display the 22KT option and press the pushbutton to select it.

  • Page 26: Displaying The Rf Threshold

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter CTRL Horizontal display used when the module is housed in the HORZ DISP one-rack unit 7701FR frame or the stand-alone enclosure. HORZ Vertical display used when the module is housed in the...

  • Page 27: Displaying The Lnb Voltage Level

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter STAT Laser is operating normally. LASR Laser is disabled. Fault in laser operation. FALT FALT 6.1.18. Displaying the LNB Voltage Level To display the LNB Voltage, select the STAT menu item in the first menu level, then use the toggle switch to display the LNBV option and press the pushbutton to select it.

  • Page 28: Displaying The Firmware Version

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 6.1.22. Displaying the Firmware Version To display the firmware version, select the STAT menu item in the first menu level, then use the toggle switch to display the VER option and press the pushbutton to select it. The firmware version will scroll across the display.

  • Page 29: Vistalink ® Remote Monitoring/Control

    ISTA ® VistaLINK is Evertz’ remote monitoring and configuration platform which operates over an Ethernet ® network using Simple Network Management Protocol (SNMP). SNMP is a standard computer network protocol that enables different devices sharing the same network to communicate with each other.

  • Page 30: Vista Link ® Monitored Parameters

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 7.2. LINK MONITORED PARAMETERS ISTA ® The following parameters can be remotely monitored through the VistaLINK interface. ® Parameter Description RF Input Power Threshold A range of values indicating the lower/upper RF threshold levels.

  • Page 31: Vista Link ® Traps

    7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter 7.4. LINK TRAPS ISTA ® The following traps can be controlled through the VistaLINK interface. Each trap will indicate a fault ® condition when its value is True. Trap Description RF Input Power High Input power is above the threshold.
  • Page 32 7700 MultiFrame Manual 7708LT Wideband RF Fiber Transmitter This page left intentionally blank Page-26 Revision 1.1...

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