Meinberg VME31 User manual

Meinberg Radio Clocks
Lange Wand 9
31812 Bad Pyrmont, Germany
Phone: [phone]
Fax: [phone]
http://www.meinberg.de
[email protected]
VME31: DCF77 Radio Clock (VME bus)
DCF77 Radio Clock VME31 with VME bus interface
DCF77 Radio Clock VME31 with VME bus interface
Important note
This product is not available anymore and may have been substituted by another product. Of course
we continue to support existing units still in use. Please contact our [1]support department for further
details.
Key Features
- Periodic interrupts
- 2,5mm LED-display
- VME Bus interface
- Receiver status LEDs
- Buffered hardware clock
- Settable Base Address
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Characteristics
Type of receiver Narrowband straight receiver with automatic gain control, Bandwidth: approx. 40Hz
Type of antenna DCF77 indoor antenna AI01
Display 8 digits 7-segments-LED-display (2,5mm)
Cable type coaxial cable RG174 for indoor use (SMB-, BNC-connector)
Status info Modulation and field strength visualized by LEDs
Free running state visualized by LED after switching to free running quartz clock mode
Synchronization time 2-3 minutes after correct DCF77 signal reception
Accuracy free run Accuracy of the quartz base operation: ±1·10-5
Reception Control Multiple check of received time telegram
Plausibility control by using two complete time telegrams
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
Data format of interfaces 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 VG-rail DIN 41612
Antenna connector SMB-Subminiature-coaxial-connector
Power supply +5V DC
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
Current consumption ca. 320 mA
Board type Eurocard
Board dimensions 160mm x 100mm , 1,5mm Epoxy
Ambient temperature 0 ... 50°C / 32 ... 122°F
Humidity Max. 85%
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Scope of supply Scope of supply includes an active ferrite antenna [2]AI01 and 5m of RG174 coaxial
cable with BNC connectors.
Optional: [3]AW02 with RG58 and patch cord, other length of cable
Manual
The english manual is available as a PDF file: [4]Download (PDF)
Links:
[1] http://www.meinberg.demailto:[email protected]
[2] http://www.meinberg.de/english/products/dcf77-indoor-antenna.htm
[3] http://www.meinberg.de/english/products/dcf77-outdoor-antenna.htm
[4] http://www.meinberg.de/download/docs/manuals/english/vme31.pdf
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