UA509: DCF77 Radio Clock
Key Features
- Direct conversion Quadrature Receiver
- Pulses per second and per minute
- 20mA input/output circuits
- 2,5mm LED-display
- 2 RS-232 interfaces
- Reception status indicated by LED
- Buffered hardware clock
- Flash-EPROM with bootstrap loader
Product Description
The hardware of UA509 is a 100mm x 160mm microprocessor board. The 20mm wide front panel contains an 8-digit LED display (2.5mm), three LED indicators and a time/date switch. The receiver is connected to the external ferrite antenna AI01 that is included in the sope of supply by the 5 meter 50 ohm coaxial cable (other lengths available). The radio controlled clock UA509 has been designed for applications where two independent serial interfaces are needed. The UA509 contains a flash EPROM with bootstrap loader that allows to upload a new firmware via the serial interface without removal of the clock.Characteristics
Receiver Type | Narrowband DCF77 quadrature receiver with automatic gain control, bandwidth: approx. 20Hz |
Status Indicators | Modulation and field strength visualized by LEDs Free running state visualized by LED after switching to free running quartz clock mode |
Display | 8 digit 7-segment LED display (2.5mm) for time or date (switch-selectable) optional: 20HP (100mm) wide front panel with 10mm height 7-segment LED display |
Synchronization Time | 2–3 minutes, given good DCF77 reception |
Accuracy free run | Accuracy of the quartz base after min. 24hrs of synchronized operation: ±1·10-6 |
Reception Monitoring | Incoming time string undergoes multiple checks
Plausibility test using two full consecutive time strings |
Pulse Outputs | Pulse per second (PPS) and pulse per minute (PPM). TTL level, pulse width: 200 msec |
Interface | Two independent serial RS232/current loop interfaces, configurable |
Serial Time String Output | COM0: Baudrate: 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 baud Framing: 7E2 or 8N1 (others on request) 2 active and 2 passive 20mA current loop outputs 1 active/passive 20mA current loop input COM1: Baudrate: 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 baud Framing: 7E2 or 8N1 (others on request) 1 active and 1 passive 20mA current loop output 1 active/passive 20mA current loop input Output string: 32 ASCII characters with date, time and status information |
Dimensions of the front panel | 4HP/3U (20mm x 128mm) |
Electrical Connectors | 64-pin rear VG edge connector DIN 41612 SMB male connector |
Backup Battery Type | In case of supply voltage failure the on-board RTC keeps the time based on XTAL for more than 150 hours (buffer capacitor) Optional: lithium backup battery (life time: 10 years) |
Operating Voltage | +5V DC |
Current Draw | approx. 250mA |
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 |
RoHS Status of Product | This product is fully RoHS-compliant. |
WEEE Status of Product | This product is handled as a B2B (Business to Business) category product. To ensure that the product is disposed of in a WEEE-compliant fashion, it can be returned to the manufacturer. Any transportation expenses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself. |
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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