GPS Clock System 6844(RC)

Short Description

System 6844(RC) is a semi-modular system with integrated GPS receiver.

Basically it consists of the following components:

• GPS radio controlled clock system 6844 consisting of
  • Housings available (optionally)
    • 1/2 19" rack (3U/42HP) for mounting into cabinets
    • 1/2 19" table-top housing
    • 1/2 19" wall housing
    • 1/1 19" rack (3U/84HP) for mounting into cabinets
    • 1 U Slim Line rack (1U/84HP) for mounting into cabinets
  • Clock board 6844 with GPS receiver
  • Display and keypad
  • 2 independent serial interfaces COM0/COM1 in RS232/RS422 for output of serial data strings, digital IRIG-B signal (B00x / IEEE C37.118-2005 (formerly IEEE 1344-1995) / AFNOR NF S87-500) or DCF77 pulse
  • Power supply
  • 2 slots for implementation of function boards or rather 2 extension slots (with bus bridge boards) for subsequent extension with function boards.
    In wall housing: 1 slot for implementation of function boards or rather 1 extension slot

For output of signal outputs required in addition to those available as standard, system 6844 can be equipped with function boards. In system 6844 a maximum of two (2) function boards for system bus can be operated. When supplying system 6844 without additional function boards two extension slots (with bus bridge boards) for subsequent system extension are implemented.

Exclusion: System 6844 in wall housing. This rack version offers just one slot for function boards / bus bridge boards in connection with COM0/COM1. At customer's request system 6844 can be supplied with two slots but waiving COM0/COM1.

Applicable for rack versions 1/2 19" rack (3U/42HP) and 1/1 19" rack (3U/84HP): At time of ordering System 6844 in such rack versions additional function boards (without system bus) or prepared extension slots for such boards can be implemented.

System 6844RC / RC Functionality

By activating the Remote Function of board 6844, system 6844 turns into a system 6844RC. As a result board 6844RC can be parameterized/monitored via the hmc to be connected via a serial RS232 interface and additional internal signal outputs are available. In connection with the LAN Management Board 6844MNG the hmc connection to board 6844RC can be processed via LAN. The Remote Function performed is limited to board 6844RC only.

NTP Stratum 1 Time Server

By implementation of up to two (2) NTP LAN Board(s) 7273(RC) or NTP LAN Board(s) 7274(RC) System 6844(RC) becomes a highly accurate NTP Stratum 1 Time Server for synchronization of computers and industrial networks.

Features

Features of Base System 6844

• GPS System to be semi-modular equipped with max. 2 function boards for system bus
• Channels for parameterization/monitoring:
  • Keypad and operating menu via display
  • WEB-GUI and SNMP for function boards with LAN interface
• Subsequent extension by additional function boards (depending on configuration of system 6844 at time of delivery)
• Potential isolation of the GPS antenna circuit
• Synchronisation with just one satellite possible
• SyncOFF Timer (bridging of reception failure) providing an error-free operation even under difficult reception conditions
• Redundant multiple test mechanism of the synchronisation signal providing a correct and leap-free signal evaluation
• High free running accuracy
• Maintenance-free back-up clock for three days
• System completely maintenance-free
• Options:
  • Activation of Remote Function of board 6844
  • Power supplies for various operating voltages
  • Redundant power supplies
  • Specific hardware and software customizations

Additional Features for System 6844RC (System 6844 with activated Remote Function of Board 6844)

• Channels for parameterization/monitoring:
  • Keypad and operating menu via display
  • WEB-GUI and SNMP for function boards with LAN interface
  • Serial connection via the hmc (hopf Management Console)
  • Optionally: LAN connection via the hmc including monitoring via SNMP
• Additional internal signal outputs (RC pulses, additional IRIG-B signal)
• Options for System 6844RC:
  • Prepared extension slot for upgrade of LAN Management Board 6844MNG (not applicable on 1U Slim Line version)
  • LAN Management Board 6844MNG for LAN connection via the hmc including monitoring via SNMP

Pictures

1U-Version

3U-Version

Downloads

PDF documents

• Technical Manual System 6844/6844RC
• Technical Manual LAN Management Board (only for System 6844RC)
• Technical Manual GPS Antenna Equipment

Software and Driver

• HMC - hopf Management Console (incl. Driver Updates)
• NTP Software