8–4 • Troubleshooting
TES9 Software User Manual (Iss. 04)
STATUS 1-3 LEDs
On power up, the STATUS 1-3 LEDs are red. They remain red while the system is booting up and
performing self diagnostic tests. The booting and tests take about 35 seconds to complete. When
the encoder has finished booting, and if the encoder passed all the tests, the STATUS 1 LED turns
green and STATUS 2 and STATUS 3 LEDs turn off. If not, contact Ross Video Technical Support
for assistance.
If you press the TES9's LOAD switch while the power is off, and turn on power while holding the
LOAD switch in, the TES9 enters a mode which allows its software to be updated. In this state,
the STATUS 1 LED is alternately yellow and off. In this state, the TES9 cannot be used for any of
its normal operations, including setup. If this state has been reached inadvertently, turn the TES9
power off for a couple of seconds, then turn it back on with the LOAD switch released.
If, at any time after the power-up sequence, the STATUS 3 LED shows any yellow or red, the
TES9's software has detected a major error condition. Please note the color and flashing pattern if
any, and contact Ross Video Technical Support for assistance.
If the encoder passes its self diagnostic tests, and it was powered on for normal operation (i.e.
without the LOAD switch pressed in), but there are problems with its settings or inputs, the
STATUS 2 LED may not be solid green. In this case, please run TES9Set and verify that all the
settings are appropriate for the desired operation.
One such error condition is caused by data being sent to the encoder faster than it can be
processed. If data is sent via a serial port, the encoder will assert flow control to the transmit
computer when needed, to avoid losing data. If the program sending the data does not respect
flow control, for example because it is incorrectly configured with flow control OFF, the TES9
will receive more data than it can process and data will be lost. An example will illustrate this.
The maximum data rate in bits/second of a serial port feeding data to a transparent module is:
DR = FV x 10 x DC
Where:
•
FV
is the field rate for interlaced formats, or the frame rate for progressive formats.
•
DC
is the Data Count set for the Transparent module in TES9Set. The factor 10 in the
equation reflects the fact that each 8-bit value is carried on the serial link with one start
and one stop bit.
For example, if FV = 59.94 and DC = 100, DR = 59,940 bits/second.
If the serial port speed is set to 57,600 bits/sec, the transmit computer cannot fully use the
capacity that has been reserved for it, but the TES9 should operate correctly. On the other hand, if
the port speed is 115,200 bits/sec, the transmit computer has the ability to transmit more data to
the TES9 than it can insert into VANC packets. The TES9 will use flow control to maintain an
average rate of 59,940 bits/sec. However, if the transmit computer does not respect low control,
data will be lost.
A similar error condition can occur when decoding a transparent stream, if the port rate is set too
low for the throughput of the stream. In the above example with DC=100, the serial port for the
decode stream needs to be set to 115,200 bits/sec, since 57,600 bits/sec is insufficient to sustain
the throughput of 59,940 bits/sec.
