Program Interface Library AR_SET_TIMERRATE
CEI-100/CEI-200/CEI-x20 User’s Manual 145
When time tagging is enabled, a timer rate of 500 µsec may be used if
only the two receivers are running. Otherwise, a timer rate of 100 µsec
may be used if only one receiver is running and the transmitter is not.
If all channels are running at the slow bit rate, any timer rate may be
used, whether or not time tagging is enabled.
It is possible to increase CEI-200 timer resolution to ¼ of a microsecond
by modifying the firmware to poll the timer counter register on receipt of
an ARINC word. This can be done by purchasing the firmware
development kit or by the customer service department upon request. The
result would be to add slightly to firmware overhead and decrease the
maximum timetag value.
None.
board (input) board for which to set rate.
rate (input) timer rate:
On the CEI-100, the following (hex) values are valid:
0 Off
50 100 us
52 200 us
55 500 us
70 1 ms
72 2 ms
75 5 ms
48 10 ms
4A 20 ms
4D 50 ms
68 100 ms
6A 200 ms
6D 500 ms
58 1000 ms
On the CEI-x20, any 16-bit value over 1440 is valid
(see description).
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