10
The board TCR167PCI provides a configurable serial interface (RS-232), a pulse
per second (PPS) with TTL and RS-232 level and a pulse per minute (PPM) with TTL
level. Like the photocoupler, these signals are only connected to the D-Sub-plug after
setting DIP-switches into the ‘ON’ position.
A contact strip on the board provides four TTL inputs. Two of those (CAP0 and
CAP1) can be used to capture asynchronous time events. These time stamps are
readable via the PCI-bus or the serial interface and can be evaluated by user software.
The state of the other two inputs can be read via PCI-bus also. They can be driven by
external status outputs for example.
As an option TCR167PCI provides a synthesizer which can generate output fre-
quencies from 1/8 Hz up to 10 MHz with TTL level into 50
Ω
and as a sine signal.
Software running on the computer can read out information regarding date, time
and status of the IRIG receiver. Access to the board is made via writing to/reading
from I/O ports. It is possible but not necessary to let the board generate periodic
hardware interrupts on the computer bus. Driver software supplied with the board is
keeping the computer’s system time synchronous to the board time.
The microprocessor system of TCR167PCI is equiped with a Bootstrap-Loader and
a Flash-EPROM. These features enable updating of the onboard software via the
serial RS-232 interface COM0 by using the Meinberg program ‘MBG Flash’.
Summary of Contents for TCR167PCI
Page 1: ...TCR167PCI Technical Information Operating Instructions ...
Page 7: ...7 IRIG Standard format ...
Page 8: ...8 AFNOR Standard format ...
Page 11: ...11 Block diagram TCR167PCI ...
Page 34: ......