8
The following modes can be configured for each channel independently:
Timer mode:
Three on- and off-times per day per channel programmable
Cyclic mode:
Generation of periodically repeated pulses.
A cycle time of two seconds would generate a pulse at
0:00:00, 0:00:02, 0:00:04 etc.
DCF77-Simulation
mode:
The corresponding output simulates the DCF77 time telegram.
The time marks are representing the local time as configured by the user.
Single Shot Mode: A single pulse of programmable length is generated once a day at a
programmable point of time
Per Sec.
Per Min.
Per Hr. modes:
Pulses each second, minute or hour
Status:
One of three status messages can be emitted:
‘position OK’: The output is switched on if the receiver was able to
compute its position
‘time sync’:
The output is switched on if the internal timing is
synchronous to the GPS-system
‘all sync’:
Logical AND of the above status messages.
The output is active if position is calculated AND the
timing is synchronized
Idle-mode:
The output is inactive
Asynchronous serial ports
Two asynchronous serial interfaces (RS-232) called COM0 and COM1 are available
to the user. In the default mode of operation, the serial outputs are disabled until the
receiver has synchronized after power-up. However, the system can be configured to
enable those outputs immediately after power-up. Transmission speeds, framings
and the kind of the time string can be configured separately. The serial ports are
sending a time string either once per second, once per minute or on request with
ASCII ´?´ only. The format of the output strings is ASCII, see the technical specifica-
tions for details. The corresponding parameters can be set up by GPSMON32 (inclu-
ded Windows software) using serial port COM0.
Optionally serial port COM1 can be delivered as an RS-485 interface.
