8 Connectors and LEDs in the frontpanel
128.4 mm [ 5.1 in ]
20 mm [ 0.8 in ]
The frontpanel of the board includes the BNC connec-
tor for the amplitude modulated time codes, four LEDs
and a 9 pin D-Sub-plug.
Pressing the hidden key BSL is required for activat-
ing the Bootstrap-Loader before updating the firmware.
The 9 pin D-Sub-connector is wired to the board’s
serial port. Pin assignment can be seen from the fig-
ure below. This port can not be used as serial port for
the computer. Instead, the clock uses the port to send
out Meinberg’s standard time string in order to control
an external display or some other external device. The
string is sent out once per second, once per minute or
if requested by an incoming ASCII "?".
It is also possible to change the board time by sending
such a string towards the clock. Transmission speed,
framing and mode of operation can be modified using
the monitor software. The string format is described
in the section ‘Technical Specifications’ at the end of
this manual.
LED Indicators
1.
blue:
while the receiver passes the initialization phase
off:
Oscillator not warmed up
green:
the internal timing of TCR180 is synchronized to
the received time code (Lock)
2.
green:
correct time code detected
red:
no correct time code detected
yellow:
TCR180 synchronized by Multi.Ref. source
yellow/green (flashing):
Holdover mode (Multi.Ref.), IRIG Code available
yellow/red (flashing):
Holdover mode (Multi.Ref.), IRIG Code not available
3.
green:
telegramm consistent
red:
telegramm inconsistent
yellow (flashing):
Jitter too large
4.
red:
the internal timing of TCR180 is in holdover mode
off:
the internal timing of TCR180 is synchronized
to the received time code (Lock)
18
Date: 4th June 2021
TCR180
Summary of Contents for TCR180
Page 1: ...MANUAL TCR180 IRIG Code controlled Radio Clock 4th June 2021 Meinberg Funkuhren GmbH Co KG...
Page 2: ......
Page 30: ...12 2 Time code Format 12 2 1 IRIG Standard Format 26 Date 4th June 2021 TCR180...
Page 31: ...12 Technical appendix TCR180 12 2 2 AFNOR Standard Format TCR180 Date 4th June 2021 27...
