bc620AT - Datum bc620AT Time and Frequency Processor Simple Type: Synchro/Resolver Board
- Part Number:
- bc620AT
- Model Number:
- bc620AT
- Make:
- DATUM
- Lead Time:
- Available
- Qty In Stock:
- Available
Datum bc620AT Time and Frequency Processor Simple Type: Synchro/Resolver Board
Time is acquired from either the GPS satellites using a supplied antenna/receiver (bc627AT only) or from time code signals, typically IRIG B. Central to the operation of the module is a disciplined 10 MHz oscillator and 100 nanosecond clock. Current time (days to 100 nanoseconds) can be accessed across the bus with zero latency, which allows for very high speed time requests. The oscillator is rate-matched (disciplined) to the input time source and drives the precision 10 MHz frequency output and time code generator circuitry. If the time source is lost, the module will continue to maintain time (flywheel). If power is lost, a 10 PPM battery backed clock is available to maintain time.
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Features
- External Event Capture/Interrupt
- GPS or Time Code Inputs
- PC, XT or AT Bus Operation (ISA/EISA Compatible)
- Programmable Periodic Output/Interrupt
- Programmable Time Strobe Output/Interrupt
Specifications
- 1 PPS Output (TTL, 50W) 200 mS pulse width
- 10 MHz Sine Wave: 0.5 to 4.0 V P-P
- Carrier Frequency: ±50 PPM (max)
- Data Transfer: 8-bit
- DC Level Shift: TTL/CMOS
- Event Capture Input :100 nS resolution, zero latency (20 nS min pulse width; 250 nS
- Input Amplitude: 500 mV to 5 V P-P
- Input Impedance: >10KW (AC coupled)
- Interrupt Levels: IRQ 3-7, 9-12, 14-15 (jumper selected)
- Latency: Zero
- Major Time Format: Binary or BCD
- Map Range: 100H - 3FFH
- Minor Time Format: Binary
- Modulation Ratio: 3:1
- Modulation Ratio: 3:1 to 6:1
- Output Amplitude: 1 V to 10 V P-P (adjustable)
- Outputs :1, 5, or 10 MHz (selectable)
- Power: +5 VDC @ 450 mA, +12 VDC @ 55 mA (bc620AT)
- Rate Accuracy: Standard VCXO 5X10-8 short term (tracking), 5X10-7 long term (flywheeling)
- Sync Sources GPS, Time Code, 1 PPS
- Time Strobe (TTL, 50W): Programmable, 1 mS through hours (1 mS pulse width)
- Worst case: 5 to 15 min
- AT Bus: Address Space: 1 Block of 16 Bytes in the PC I/O
- Disciplined Oscillator: Frequency: 10 MHz
- Maximum Velocity: 300 meters/sec (1,080 KPH)
- Number of Channels: 6
- Position Accuracy: 100 meters SEP (SA on)
- Real Time Clock: Bus Request Resolution: 100 nanoseconds
- Receiver Frequency: 1.575 GHz (L1, C/A code)
- Solution Modes: 1,3, and 4 satellites
- Time Accuracy: <±2 microseconds
- Time Code Generator: Time Code Format: IRIG B
- Time Code Translator: Time Code Formats: IRIG B, NASA 36, XR3, 2137 (modulated or DCLS)
- Time to First Fix: Brief power off: 1.5 min (1-4 SV)
- Timing Functions: Heartbeat (TTL, 50W): Programmable periodic 2.3 mHz to 2.5 MHz
Applications
- None Available
Aliases
- None Available
Related Items
BC620AT-OVEN
Time Code Generator