• Two independent slave clock lines
• Connection of up to 2x 50 impulse controlled or up to 2x 50 self-correcting Time Code slave clocks (max. output current 0.5 A each line)
• Polarised 24 V DC outputs for minutes-, ½ minutes - or seconds impulses respectively time code for operation of self-correcting and self-setting slave clocks
• Mixed operation of slave clocks and self-correcting clocks possible
• Impulse length adjustable
• Impulse to break rate programmable
• Automatic adjustment of slave clocks after mains failure
• Electronic impulse memory for min. 5 years
• Automatic summer-/winter daylight-saving time programmable
• Everlasting calendar
• Automatic free programmable holiday calendar with or without holidays depending on Easter
• Electronic short-circuit protection
• Electronic low voltage cut-off (18 V)
• Multi-functional display (LCD) with two lines (20 characters per line, digit height 6 mm)
• Indication of weekday, hours, minutes, seconds, date, summer-/winter time and DCF reception

Synchronisation through:

• DCF-77 (for time and summer-/winter time changes)
• GPS system (for time and summer-/winter time changes)
• 24 V DC polarised minute impulses (master/slave operation)
• Text message on display in case of missing DCF/GPS synchronisation after adjustable time
• Error text message in case of short-circuit on a slave line
• Accuracy ±0.1 s/day at 25 °C (without DCF synchro nisation)

Signalling device

• Four potential free switchover contacts
• 99 day programs with max. 99 program steps each
• Period table with 99 program lines
• Copy function for day programs
• Switching times per second
• On/Off- and timer-functions with 1 s … 59 min. run time
• 32 different timer lengths programmable
• Checking of programming via display
• Single-, partial- and complete deletion of programs
• Program memory for 99 day programs with totally 9801 (=99x99) program steps
• Alarm relay function: The relay switches off in case of an alarm condition (short-circuit on slave line or missing DCF/GPS synchronisation).
• Relay function depending on summer-/winter time status: The relay is only active either at current summer time or winter time.
• Contact rating 250 V / 4 A (ohmic load)

NTP-Interface

• The master clock is fitted with a 10/100 Base-T Ethernet Interface, which enables to act as NTP time server in a TCP/IP v4 network (RJ45 connection)
• NTP (Network Time Protocol) protocol for synchronisation of computers in a PC network = international standard for PC time transmission in internet
• NTP is also used in smaller networks (LAN) for synchronisation of PC server and PC work stations
• Alarm messages per e-mail at NTP errors possible
• Input (RJ45) for use of master clock as net client in a TCP/IP network
• This interface supports following protocols:
• NTP and SNTP:
• Network Time Protocol (NTP) v2, v3 and v4 in Unicast, Broadcast and Multicast
• Simple Network Time Protocol (SNTP) v3 and v4 in Unicast, Broadcast and Multicast
• Network accuracy:
• Synchronisation typically within 10ms…100ms of MPU-TC-NET time base, depending on network delay and jitter (NTP)
• Comfortable remote control of complete master clock via web interface:
• no additional software necessary, handling via standard web browser possible
• Export of master clock configuration as file
• Re-establishment at any time
• Selection of data options which shall be imported
• Alarm message by e-mail:
• at synchronisation failure
• at short-circuit of slave lines
• Supervision of a 24VDC alarm input
• Software-Update if necessary
• Remote maintenance and -programming

Technical specifications:

• Power supply: 110…240 V AC, 50/60 Hz
• Current consumption: < 0.4 A @ 230 V AC
• Data storage: > 1 year (the battery stores data during mains failure)
• Case: 19” rack, 1 HE
• Width 483 mm x Depth 245 mm x Height 44 mm
• Weight: approx. 2 kg
• Operating temperature: 0 … 50 ºC
• Rel. humidity: 0 % to 90 % (non-condensing)

Options:

• DCF-ANT02: DCF-77 radio synchronisation antenna
• GPS-ANT8: GPS reception antenna with DCF output
• RS232/RS485: Serial output