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Masterclock TCDS-A User Manual – Original – 2013-04-19

Troubleshooting Masterclock Digital Timecode Displays

The easiest way to verify that your display is decoding Time

Code is to observe the LED colons between the display

digits. 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. The colons will be on

continuously when synchronized to a time source.

A secondary method is to monitor the Time Code status

while using the WinDiscovery app.

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 that your display does not support

PROBLEM:

Display shows dashes (- - - -) or flashing colons

 Display is not currently connected to a Time Code

source.

 Display has reached destination from countdown

using Masterclock RC500.

 There is a problem with the cabling between

display and source.

 There is a ground loop or other interference

between the display and the Time Code source.

Verify that a common ground exists between the

display and the Time Code source. If the cabling

distance between the Time Code source and

display is too large you may want to consider

inserting a Masterclock DA12 between the devices.

 The signal level of the incoming Time Code is out of

the range of the Time Code circuitry.

 The signal level of the incoming Time Code is

fluctuating or has changed. Remove and replace

the power cord of the display to reset the auto-

detection of Time Code.

 The Time Code being fed to the Display is not a

recognized format.

There are no user serviceable parts

inside the Masterclock Display. Please

contact Masterclock.com if you require

servicing or repair.