• Microprocessor master clock, fitted with external radio transmitter for wireless communication with unlimited analogue and digital radio slave clocks of series BTWL
• Wiring with control cables not necessary!
• Automatic adjustment of master clock time at installation
• Automatic adjustment of the wireless clock system after mains failure
• Automatic summer/winter time changes
• Radio transmitter for unlimited quantity of radio slave clocks inside reception area
• Power supply of radio transmitter via master clock
• Safety in operation through coded time telegram; thus no interferences with other systems
• 4 different, coded channels for avoiding interferences of several wireless clock systems
• In case of no radio signal the slave clocks are running with their quartz time base without interruption (max. 24 hours)
• Code-protected keypad
• 2-lined LCD display for indication of hours, minutes, seconds and date respectively menu guide in program mode (2x 24 characters)
• Checking-LED’s for power supply (green) and alarm (red)
• Traditional impulse output 0.5 A for control of hard-wired slave clocks via 24 V DC minutes-, ½minutes- or seconds impulses (connection of up to 50 impulse slave clocks)
• Slave clock output short-circuit-proof and overload protected
• Alarm relay
• Easy, user-friendly menu:
• Programming, automatic or manual relay activation
• Programming of holidays (vacation program), special days (e.g. school autonomic days, factory free days, or similar), parameterisation of switching outputs and time changes
• View of programs, adjustments and signal times
• 3 free programmable potential free switching outputs 1 A / 240 V (to be hard-wired) for control of breaks signalling devices, heating, air conditioning, building illumination, and so on
• Programming of relays in different modes possible: weekly, holidays, vacation period, other special days, astronomic or periodic
• Relay control hard-wired or wireless
• Including easy and user-friendly PC software:
• Compatible to Windows XP and Windows Vista
• All functions and programming are available through download, also continuative functions, which cannot opened from master clock menu directly
• Software allows hard copy of programming adjustments and alarm messages
• Help menu
• NTP Time Server Function in TCP/IP network (RJ45 connection)
• NTP (Network Time Protocol) protocol for synchronisation of computers in a computer network = international standard for PC time transmission in Internet.
• NTP is also used for synchronisation of PC servers and PC workstations in smaller networks (LAN).
• As enlargement, analogue and digital NTP slave clocks can be synchronised via PC network (i.e. the DCF/GPS synchronised BT-M103-WL-NTP master clock acts as NTP server in TCP/IP network and synchronises all other network clients)
• Alarm messages in case of NTP faults via relay or e-mail possible
• Input (RJ45) for use of master clock as net client to be synchronised via TCP/IP network time source

Technical specifications:

• Master Clock:
• Case: 19“, aluminium, 1 HE
• Accuracy quartz: TCXO, ±0.1 s/ 24 h at 20…25 °C (without DCF/GPS)
• Power supply: 240 V AC ±10%, 50/60 Hz, 35 W
• Ambient temperature: 0…50 °C
• Dimensions (WxHxD): 483 x 44 x 200 mm
• Weight: 2.8 kg
• Radio transmitter:
• Case: ABS plastic for wall mounting with 2 screws
• Transmitter frequency: 869.525 MHz
• Transmitter power: 25, 125 and 500 mW adjustable (via master clock)
• Transmission range: Indoors 100…200 m depending on ambient conditions (for major ranges up to 3 signal amplifiers BTWL-HUV per direction can be used)
• Power supply: 12…24 V AC/DC via master clock
• Power consumption: 5 W
• Protection class: IP 54
• Dimensions (WxHxD): approx. 80 x 80 x 45 mm
• Weight: approx. 150 g

Options:

• BT-DCF-ANT: DCF-77 radio synchronisation antenna
• GPS-ANT-BT: GPS synchronisation antenna
• BTWL-HUV: External signal amplifier
• Different extension cards (max. 4 plug-in cards at style with rack mounting case):
• Connection via internal data bus
• Plug-in card with 2x RS232/422/485 outputs
• Plug-in card with 1x 24 V DC / 0.5 A minute-, ½minute- or seconds impulse output (Connection of max. 50 other slave clocks)
• Plug-in card with 3 relays