Transcript
LL-8250
Airborne Timecode Generator
Datasheet V 3.0
Key Features: • Series for airborne, shipboard and other harsh environment applications • Conforms to military standard MS91403 (ATR type) requirements • Hitherto existing units tested according to MIL-standards suitable to the respective application • Basic unit comes in a 1/2 ATR chassis • Family of versatile and economic timing units • Synchronized to 12 channel C/A Code L1 GPS Receiver (L2 optional) • Optional Video Time and Data Inserter • Optional HaveQuick Synchronization • Optional time code and frequency outputs LL-8250 Airborne Timecode Generator
Description: The LL-8250 Series Airborne Time Code Generator are a family of versatile and economic timing units designed to adress the needs in airborne, shipboard and other harsh environment applications. The standard equipment conforms to military standard MS91403 (ATR type) requirements. The basic units comes in a 1/2 ATR chassis, generates IRIG B and is synchronized to a 12 channel L1 GPS Receiver.
Options: Oscillator:
from the standard TCXO (1x10E-6 aging) to Rubidium Oscillator most wanted: OCXO, +-1 x 10E-9
Frequency outputs:
10 MHz, 5 MHz and 1 MHz, sinewave or TTL
GPS:
Optional L2 Receiver available
Time Codes:
Besides IRIG A and IRIG B the system LL-8250 can be equipped with boards that generate and read digital time codes like HaveQuick (STANAG 4246, ICD-GPS-060, STANAG 4430, STANAG 4372 and others)
Video Time Insertion:
The LL-8250 can be equipped with Video Time and Data Insertions.
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LL-8250 Series Airborne Time Code Generator Specifications: Internal Time Base Oszillator:
TCXO (1x10E-6 aging) Optional OCXO, +-1 x 10E-9 or Rubidium Oscillator available
Output Timecode Generator Output
1 (one) IRIG B output is part of the basic unit. Optional Time Code Generator Modules and Time Code Distribution Boards are available.
1PPS Output
1 (one) 1PPS Output is part of the basic system. 1PPS Distribution Boards are available optionally. Computer Interface 1 (one) Computer Interface is part of the basic system
Input GPS Antenna Frequency 1575,42 MHz (L1) Bandwidth ± 1.023 MHz Polarization Right hand circular Impedance 50Ω Output power 5 VDC Connector TNC
GPS Receiver Receiver Architecture 12 parallel channels U 1575,42 MHz C/A code (1.023 MHz Chip rate) Code plus carrier tracking (carrier aided tracking) Tracking Capability 12 satellites simultaneous
RF Characteristics of Receiver Dynamic Range 27dB Saturation -110dBm Performance of the Receiver Accuracy Position: Altitude: Velocity: Time Pulse:
10 m 2-sigma without SA 100 m 2DRMS (95%) with SA 1 to 5 m typical in differential mode 156mRMS(95%) 0.02 m/s without SA UTC ± 500ns with SA on
Dynamic Limits Velocity: 515 m/s maximum at altitudes < 18000 m Altitude: -1000 m minimum 18000 m maximum Acceleration: 4 G maximum Jerk: 5 m/s3 maximum Startup Time (TTFF) Hot (date. time, position, almanac, ephemeris) 15 s Warm (date, time, position, almanac) 45 s Cold (no stored information) max. 15min Reacquisition Time After 60 s obstruction 3,5 s Internal <1,0 s
Electrical Main power Voltage 28 V nominal +24,…,+32 VDC Power nominal consumption 50W depending on installed options (During start-up 60 to 70 Watts within 10 minutes)
Connectors to be defined available: military types coaxial connectors like BNC, SMA or TNC digital connectors (Sub-D)
Environmental Temperature Operating -15°C to +55°C, normal Operation Humidity: up to 95% relative (non condensing) Shock 6g / 11ms Vibration MIL-STD-810E / Method 514.4
Chassis 1/2 ATR Dimension 120,5 x 319,1 x 193,7 (w/o plugs and coolers) Mounting 1/2 ATR mount Weight about 3,5 kg according to the installed options
LL-8250 Front Panel LED
Rudolf-Diesel-Str. 29a 82216 Gernlinden G E R M A N Y Tel. +49-8142-284582-0
Fax +49-8142-284582-2
[email protected]
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