Unmodulated outputs, Pulse outputs – Meinberg TCR170PEX User Manual
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Unmodulated outputs
The pulse width modulated DC-signals are coexistent to the modulated output and
are available with TTL level into 50
Ω and as RS-422 signal. After bringing DIP-
switches into the ‘ON’ position, these outputs are available at the D-Sub connector.
The active state of the unmodulated outputs can be set up by a jumper on the board
TCR170PEX.
Pulse outputs
The pulse generator of TCR170PEX contains three independent channels (PPO0,
PPO1, PPO2). Two of these TTL outputs can be mapped to pins at the 9-pin connector
at the rear slot cover by using a DIL switch, the third channel is available at a contact
strip. The pulse generator is able to provide a multitude of different pulses, which are
configured with the monitor program. The active state of each channel is invertible,
the pulse duration settable between 10 msec and 10 sec in steps of 10 msec. In the
default mode of operation the pulse 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.
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