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10.6 Programmable Pulse Outputs
In microSync systems the following modes are available for the programmable pulse outputs:
Idle
Selecting "Idle" deactivates the output.
Timer
This mode simulates a programmable day assigned timer. Three turn-off and turn-on times are programmable for
each output. If you want to program a switchtime, change the turn-on time "On" and the corresponding turn-off
time "Off". A turn-on time later than the turn-off time would cause a switch program running over midnight. For
example a program "On"10.45.00, "Off" 9.30.00 would cause an active ouput from 10.45 to 9.30 (the next day!). If
one or more of the three switching times are unused just enter the same time into the values "On" and "Off". In
this case the switch time does not affect the output.
Single Shot
Selecting Singls Shot generates a single pulse of defined length once per day. You can enter the time when the
pulse is generated with the "Time" value. The value "Length" determines the pulse duration. The pulse duration
can vary from 10 msec to 10 sec in steps of 10 msec.
Cyclic Pulse
The value of "Time" determines the time between two consecutive pulses. This cycle time must be entered as
hours, minutes and seconds. The pulse train is synchronized at 0:00 o’clock local time, so the first pulse of a
day always occurs at midnight. A cycle time of 2 seconds for example, would cause pulses at 0:00:00, 0:00:02,
0:00:04 etc. Basically it is possible to enter any cycle time between 0 and 24 hours, however usually a cycle
times that cause a constant distance between all consecutive pulses make sense.
For example: a cycle time of 1 hour 45 minutes would cause a pulse every 6300 seconds (starting from 0
o’clock). The appearing distance between the last pulse of a day and the first pulse of the next day (0:00:00
o’clock) would be only 4500 sec. The value in entry field "Cycle" turns red, when entering a time that causes
this asymmetry.
Pulses Per Second, Per Min, Per Hour
These modes generate pulses of defined length once per second, once per minute or once per hour. "Length"
determines the pulse duration (10 msec...10 sec).
DCF77 Marks
In "DCF77 Marks" mode the selected output simulates the telegram as transmitted by german time code trans-
mitter DCF77. The generated time code is related to the local time zone. If you want DCF simulation to
be disabled when the clock is in free running mode, you can enter the delay (given in minutes) for deactivat-
ing the DCF-Simulation with the "Timeout" value. DCF Simulation is never suspended, if the delay value is zero.
Position OK, Time Sync and All Sync
Three different modes are selectable for output of the clocks synchronization state. The Mode ’Position OK’
activates the output when the receiver has sufficient satellites in view to calculate its position. In "Time Sync"
mode the respective output is activated when the clocks internal timebase is synchronized to the GPS timing.
The "All Sync" Mode performs a logical AND operation of the both states previously mentioned, i.e. the output
is activated if the position can be calculated AND the internal timebase is synchronized to the GPS timing.
DCLS Time Code
DC Level Shift Time Code. The selection of the time code is done by the Meinberg Device Manager menu
"Outputs Settings".
Synth. Frequency
The output of the frequency synthesizer is also done via the "Outputs Settings" menu.
PTTI 1PPS
In this mode, a non-inverted PPS of 20 microseconds pulse length is available at the selected output.
74 Date: 22nd June 2020 microSync