9
Time Capture Inputs
Two time capture inputs called User Capture 0 and 1 are provided at the rear connector
(CAP0 and CAP1) to measure asynchronous time events. A falling TTL slope at one of
these inputs lets the microprocessor save the current real time in its capture buffer.
Capture events are then printed out via COM0 or COM1. The capture buffer has a
capacity of more than 500 events, so either a burst of events with intervals down to less
than 1.5 msec or a continuous stream of events at a lower rate depending on the
transmission speed of COM0 or COM1 can be recorded. The format of the output string
is ASCII, see the technical specifications at the end of this document for details. If the
capture buffer is full a message "** capture buffer full" is transmitted, if the interval
between two capture events is too short the warning "** capture overrun" is being sent.
Asynchronous Serial Ports
(optional 4x COM)
Up to four asynchronous serial RS232 interfaces (COM0 ... COM3) 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 mode of opera-
tion can be configured separately using GPSMON32. COM0 is compatible with other
radio remote clocks made by Meinberg. It sends the time string either once per second,
once per minute or on request (after receiving a ´?´ character). Additionally the interfaces
can be configured to transmit capture data either automatically when available or on
request. The format of the output strings is ASCII, see the technical specifications at the
end of this document for details. The corresponding parameters can be set up by
GPSMON32 via the serial port COM0.
Summary of Contents for GPS167SV
Page 1: ...Incl Windows Software GPSMON32 GPS167SV Technical Information Operating Instructions ...
Page 30: ...30 ...
Page 33: ...33 AFNOR Standard Format ...
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Page 43: ...43 Diskette with Windows Software GPSMON32 ...
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