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System 6844(RC) - V03.00
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
9.2.6 No DCF77 Antenna Simulation (77.5kHz) / DCF77 Pulse (1Hz)
Description
A System that is connected to the DCF77 Antenna Simulation or DCF77 pulse does
not synchronize.
Cause / Problem Solution
The System is not synchronous and the timer for the DCF77 Antenna Simulation has
lapsed.
9.2.7 No or Incorrect Serial Output
Description
The connected Systems do not receive a serial string
The connected Systems receive serial strings with a time that differs from the Sys-
tem
Cause / Problem Solution
The serial interfaces are not configured correctly (e.g. only transmit on enquiry, UTC
output, etc.).
The connection to the serial interfaces is not correct (e.g. TxD and RxD cables
transposed).
9.2.8 Incorrect Time Output
A wrong configuration can cause errors on the output of the local time as well as of the UTC
time.
Only the local time can be entered by means of the keypad.
Local Time Description
Transmitted
local time
is different from the actual local time
Cause / Problem Solution
UTC/local time offset set incorrectly or not set
DST changeover points of time set incorrectly or not set
Time was set manually, System running in quartz mode
Time has drifted because the System has been running in quartz mode for a long period
Local time to UTC time offset differs from the time offset configured in the System
6844(RC)
Fault on Control Board 6844(RC)
UTC Time Description
UTC time
transmitted differs from the actual UTC time
Cause / Problem Solution
Time has drifted because the System has been running in quartz mode for a long
period
Time was set manually, System running in quartz mode
Cause of incorrect UTC time on manual setting: incorrect local time entered (the lo-
cal time must always be entered when setting)
or System incorrectly configured (time offset, DST changeover)