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VISTEK V1679 User Manual

Single-mode fibre data transceiver
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VISTEK V1679 SINGLE-MODE
FIBRE DATA TRANSCEIVER
USER GUIDE
www.pro-bel.com
1

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Summary of Contents for VISTEK V1679

  • Page 1 VISTEK V1679 SINGLE-MODE FIBRE DATA TRANSCEIVER USER GUIDE www.pro-bel.com...

  • Page 2: Table Of Contents

    2.2 Configuration ....................6 2.3 Output Specification..................7 GENERAL PURPOSE INPUTS ................. 8 3.1 Description ....................... 8 3.2 Configuration ....................8 3.3 Examples for Driving V1679 GPI Inputs............10 3.3.1 Push Button or Relay Driven Switch............ 10 3.3.2 N-Channel MOSFET Switch..............11 3.3.3...
  • Page 3 VISTEK V1679 single-mode fibre data transceiver DART INTERFACE ....................28 7.1 General ......................28 7.2 DART Control Registers ................28 7.3 DART Status Registers.................. 29 BLOCK DIAGRAM....................30 CLEANING INSTRUCTIONS ................... 31 HU-V1679...
  • Page 4 LASER SAFETY The V1679 board is a Class 1 Laser Product under the Food and Drug Administration (FDA) / Center for Devices and Radiological Health (CDRH) regulation. It cannot, under normal operating conditions (i.e., intended use), emit a hazardous level of optical radiation. No warning label or control measures are required by the FDA/CDRH.

  • Page 5: General

    The V1679 SINGLE-MODE FIBRE DATA TRANSCEIVERS form part of the Vistek V1600 range of fibre interface products. Based on a 3U high baseboard, which is common to all members of the V1679 family, the board can be fitted into a V1603 or V1606 rack, from which it receives its power and control.

  • Page 6: General Purpose Outputs

    'Normally Open' (short: NO) mode, or in a 'Normally Closed' (short: NC) mode. The Relays can be identified as little black cubes, lined up in either one group (V1679/IO, Group B only) or two groups (V1670/OP, Group A and B) at the rear connector end of the board. The output configuration Jumpers can be found in front of each Relay.

  • Page 7: Output Specification

    VISTEK V1679 single-mode fibre data transceiver Output Specification Number of Outputs: V1679/IO: 8 Earth-free, dry contact Relay switches V1679/OP: 16 Earth-free, dry contact Relay switches Contact configuration: Normally Open (NO) or Normally Closed (NC) Contact material: Ag + Au Clad Contact rating: 0.5A @ 24Vd.c.

  • Page 8: General Purpose Inputs

    Depending on the actual board configuration, the V1679 supports up to 16 General Purpose Inputs. A V1679/IO features 8 General Purpose Inputs in addition to its 8 General Purpose Outputs, whereas a V1679/IP comes with 16 Inputs and no Outputs.
  • Page 9 VISTEK V1679 single-mode fibre data transceiver When driving the Opto-Isolator from an external voltage source, one must check that the forward current through the Light Emitting Diode (LED) inside the Opto-Isolator does not exceed 60mA. Otherwise, the Opto- Isolator can be permanently damaged or even destroyed.

  • Page 10: Examples For Driving V1679 Gpi Inputs

    VISTEK V1679 single-mode fibre data transceiver Examples for Driving V1679 GPI Inputs 3.3.1 Push Button or Relay Driven Switch A Push Button is a simple example of how a GPI Input can be driven. One should be aware that when using any type of mechanically actuated switch, the input signal could bounce for several milliseconds before it reaches a stable state.

  • Page 11: N-Channel Mosfet Switch

    VISTEK V1679 single-mode fibre data transceiver 3.3.2 N-Channel MOSFET Switch The mechanical switch shown in the previous example can easily be replaced by an N-Channel MOSFET Switch, as illustrated in the diagram below. Using a FET not only eliminates possible bouncing problems, which are common to most mechanical switches, it also allows much faster switching cycles.

  • Page 12: Open Collector Output

    3 party equipment without the need of modifications or for additional hardware. As far as the V1679 GPI Inputs are concerned, the following guidelines apply when connecting to an Open Collector Output: • The Open Collector Output must be capable of sinking at least 5mA (normally specified as I CollectorCurrent).

  • Page 13: Cmos Output

    5V CMOS families with sourcing/sinking capabilities of as low as ± 4mA, such as HC or HCT, can be also used to drive a V1679 GPI Input. In order not to violate the CMOS Buffer's output specification, an additional current limiting resistor could be necessary. If the Buffer can source -24mA, (AC, ACT Families), no additional resistor is required since the on-board 100Ohm series resistor provides sufficient current limiting.

  • Page 14: Input Specification

    VISTEK V1679 single-mode fibre data transceiver Input Specification Number of Inputs: V1679/IO: 8 Opto-Isolators V1679/IP: 16 Opto-Isolators Opto-Isolator Rating (T =25°C): Emitter (LED) Continuous Forward Current: 60mA Input Forward Voltage V =10mA: 1.2V (typ), 1.5V (max) =0.3mA: 0.75V (min), 1.0V (typ) Turn-On Threshold Current I 1.6mA (max)

  • Page 15: Serial Communication Ports

    150 ft. The RS-422 receivers used on the V1679 are equipped with a failsafe circuitry that guarantees a logic high receiver output when the receiver inputs are open or shorted.

  • Page 16: Configuration Options

    VISTEK V1679 single-mode fibre data transceiver Configuration Options The following illustration shows the position and meaning of all COM1 and COM2 related configuration Jumpers: 120Ohm Termination Jumper Term RS422 only! Term RS-232/422 RS-232/422 Transceiver Transceiver COM2 example shown: Slew-rate selection...

  • Page 17: Rs-232/422 Mode Selection Jumper

    VISTEK V1679 single-mode fibre data transceiver 4.2.1 RS-232/422 Mode Selection Jumper The Mode Selection Jumper is used to configure a port for RS-232 or RS-422 operation. The following combinations are supported: COM1: RS-232 RxD/TxD, CTS/RTS COM2: RS-232 RxD/TxD, CTS/RTS COM1: RS-422 RxD/TxD only...

  • Page 18: Rs-232/422 Examples

    V1679's serial communication ports without the need for a second PC or other bulky RS-232 peripherals. The best way to wire it up is using Vistek's V1679 Breakout Adapter, which can be pushed onto the 44-pin high density D-type connector at the rear panel and gives instant access to both serial ports and all GPIO lines.
  • Page 19 VISTEK V1679 single-mode fibre data transceiver The example below shows an installation in which a Vistek V1606 rack is being remotely controlled over a long distance. Since the DART dongle (DIN 341) requires all modem control lines, COM1 has to be configured for full modem support.
  • Page 20 Assuming that only one fibre link is available, a CWDM module is used for multiplexing/de- multiplexing different laser wavelengths, in this case not only from the V1679's, but also from a V1673 Dual Fibre Transmitter (/TT) and Dual Fibre Receiver (/RR) pair for the actual video link back to the control room.

  • Page 21: Rear Panel Connections

    VISTEK V1679 single-mode fibre data transceiver REAR PANEL CONNECTIONS The standard 3U rear panel is shown below. Note that all V1679 variants use the same rear panel. V 1 6 7 9 F ib re D a ta T x /R x...

  • Page 22: Electrical Interfaces

    VISTEK V1679 single-mode fibre data transceiver Electrical Interfaces All General Purpose Interface (GPI) signals and the Serial Comms Port signals are available on a 44-pin, high density D-type connector. The following table shows the Connector Pinout: Note that GPIO pin pairs (GPIO_Px, GPIO_Nx, x = 1..16) are either used as inputs or outputs. The naming convention is with reference to the opto-isolated inputs, where the 'P' (positive) pin drives the LED's Anode and the 'N' (negative) pin is either grounded internally or it drives the LED's Cathode.

  • Page 23: V1679 Breakout Adapter

    V1679 Breakout Adapter Vistek offers a special Breakout Adapter for the V1679, which gives instant access to all GPIO signals on so- called spring terminals and to all serial comms lines on two female 9-pin DSUB connectors (COM1 / COM2).

  • Page 24: Gpio Terminals

    (AWG 26-20). The recommended stripping length is 11mm. 5.3.3 Power Supply Output The V1679 Breakout Adapter features a power supply output, which delivers unregulated +15V @ 1A (fused) on a 3-way PHOENIX Header with 3.5mm pitch (MCV1.5/3-G-3.5). Optical Interfaces CAUTION The maximum optical input power must not exceed 5mW (average) or 10mW (peak) at wavelengths 1110nm ≥...

  • Page 25: Optical Output

    The 8b/10b encoding can be found in many of today's high-speed serial transmission standards, like InfiniBand, FibreChannel, Gigabit Ethernet or DVB-ASI, to name only a few of them. The serial data rate is 622.08 Mb/s, which makes the V1679/xx, as far as its physical layer is concerned, compliant with SONET level OC-12.

  • Page 26: Front Panel Led Indicators

    Fail V1679 Fibre Data Tx/Rx Figure 14 : V1679 Front Panel 6.1.1 Remote Control Access and Power Indicators The green +V LED is lit when the unit’s on-board power supply is delivering voltage. The yellow REM LED indicates with short blinks that the unit is accessed by the DART controller. It does not directly indicate that the unit is in remote control mode.

  • Page 27: Carrier / Lock / Laser Fail Indicators

    No Carrier (no or weak optical signal at input) LED Green: Carrier is present Lock: LED Off: Synchronization between two V1679 boards has failed LED Green: Link has been established, Error free data transmission Laser Fail: LED Off: Laser Transmitter is good...

  • Page 28: Dart Interface

    DART INTERFACE General The V1679 board is a Class 4 DART module with a serial EEPROM for reading and writing card details through the DARTbus in the same manner as other V1600 range cards. In addition, the unit has several read-only status ports, over which the board’s operational status can be obtained.

  • Page 29: Dart Status Registers

    DART Status Registers The following table shows all available Status Bits: Description CFG0 – Configuration Bit0 '000': V1679 IO, no PIC '001': V1679 IP, no PIC CFG1 – Configuration Bit1 '010': V1679 OP, no PIC '011': reserved CFG2 – Configuration Bit2...

  • Page 30: Block Diagram

    VISTEK V1679 single-mode fibre data transceiver BLOCK DIAGRAM Figure 15 : Single-Mode Fibre GPI/O and RS-232/422 Transceiver Issue 1...

  • Page 31: Cleaning Instructions

    For cleaning, only lens-grade, lint-free tissue (e.g. Kimwipes), saturated with 99.8+% pure, anhydrous Isopropyl Alcohol, shall be used. Vistek recommends the use of pre-saturated wipes. One sachet, containing a pre-saturated wipe, can be found packed with each board. Cleaning Technique: Note that pre-saturated wipes dry out very quickly and they should be used only once.

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