VME31: DCF77 Radio Clock (VME bus)
Key Features
- Periodic interrupts
- 2,5mm LED-display
- VME Bus interface
- Reception status indicated by LED
- Buffered hardware clock
- Settable Base Address
Product Description
Characteristics
Receiver Type | Narrowband tuned radio frequency receiver with automatic gain control, reception frequency: 77.5 kHz, bandwidth approx. 40 Hz |
Status Indicators | Modulation and field strength visualized by LEDs Free running state visualized by LED after switching to free running quartz clock mode |
Type of Antenna | DCF77 indoor antenna AI01 |
Display | 8-digit, 7-segment LED display (2.5 mm) |
Synchronization Time | 2–3 minutes, given good DCF77 reception |
Accuracy free run | Accuracy of the quartz base operation: ±1·10-5 |
Reception Monitoring | Incoming time string undergoes multiple checks
Plausibility test using two full consecutive time strings |
Interface | VME Bus; A16; D8; Slave Access: Short Supervisor I/O (2Dh), Short Non-Privileged I/O (29h) Interrupt Levels: IRQ1...IRQ7, programmable Periodic Interrupts: None, 10msec, 100msec, 1sec, 10sec, 1min, 10min, 1hour, programmable |
Serial Time String Output | 16 bytes in 1k-block, BCD coded Byte |
Interrupts | None, 10msec, 100msec, 1sec, 10sec, 1min, 10min, 1hour, programmable |
Dimensions of the front panel | standard: 4HP/20mm, 6U/261,8mm, alternative: 4HP/20mm, 3U/128.4mm |
Electrical Connectors | 96-pin DIN 41612 connector |
Antenna Connector | SMB subminiature coaxial connector |
Power Consumption | 1,6 W |
Backup Battery Type | In case of supply voltage failure the on-board RTC keeps the time based on XTAL for approx. 4 weeks |
Cable Type | coaxial cable RG174 for indoor use (SMB-, BNC-connector) |
Operating Voltage | +5 V DC |
Current Draw | ca. 320 mA |
Board type | Eurocard |
Board Dimensions | 160 mm x 100 mm, 1,5 mm Epoxy |
Supported Temperature | Operational: 0 - 50 °C (32 - 122 °F)
Storage: -20 - 70 °C (-4 - 158 °F) |
Supported Humidity | Max. 85 % (non-condensing) at 40 °C |
Contents of Shipment | Scope of supply includes an active ferrite antenna AI01 and 5m of RG174 coaxial cable with BNC connectors. Optional: AW02 with RG58 and patch cord, other length of cable |
Downloads
Short Info Sheet
Manuals
Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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