Masterclock
www.masterclock
.com
26
Troubleshooting
The easiest way to verify that CLDTCD12 is decoding time code is to observe the LED colons on the
front of the clock. The colons will be on continuously when the CLDTCD12 synchronized to a time
source (i.e. decoding time code). If the colons are flashing at a rate of 1 pulse per second or
dashes are displayed, then there is an issue with the input time code signal.
A secondary method is to monitor the time code status while using the WinDiscovery application.
Time code decoding problems can include any of the following:
No time code present
Ground loops or other interference such as coupling from nearby AC power lines,
bad/intermittent cables, wiring or connectors incorrect wiring connection for unbalanced
or balanced input signals
Out of range signal level that is too high or too low
Fluctuating signal level
A signal that is distorted
Excessive loading on the time code line
A time code type or encoding that the CLDTCD12 option does not support
There are no user serviceable parts inside the
CLDTCD12
digital clock/display.
Please contact MASTERCLOCK if you require servicing or repair.
Clock is displaying dashes (- - - - ) and/or colon’s are flashing
(i.e. unable to “lock” to time code)
Possible reasons/solutions:
1.
Clock is not currently connected to a time code source.
2.
There is a problem with the cabling between the clock and the time code source.
3.
There is a ground loop or other interference between the clock and the time code source.
Verify that a common ground exists between the clock and the time code source. If the
cabling distance between the time code source and clock is large you may want to
consider inserting an audio distribution amplifier between the devices.
4.
The signal level of the incoming time code is out of the range of the time code circuitry.
5.
The signal level of the incoming time code is fluctuating or has changed. The signal level
must be stable for the CLDTCD12 to detect and decode the time code. Cycle power of the
CLDTCD12 device to re-initiate the auto-detection of time code.
6.
The time code being fed to the CLDTCD12 is not a recognized format. Verify that your time
code source is providing one of the time code formats that the CLDTCD12 can decode.
