Cobalt Digital Inc 3G Fusion 9931-EMDE Product Manual page 120

3
Table 3-4 Troubleshooting Processing Errors by Symptom — continued
Symptom
Analog audio not processed or
passed through card.
(+ENCD, +ENCE options only)
Encoder will not accept external
RS-485 metadata.
Card will not retain user settings,
or setting changes or presets
spontaneously invoke.
Card spontaneously disconnects
from remote control; card
displays red error card-edge LED
3-68
Error/Condition
Analog input/output DIP
switches not set to match
intended use for analog rear
module port.
RS-485 A and B signals
reversed ("flipped").
• GPI Controls tab GPI
Coding set to Binary with no
controlled GPI source
connected to GPI inputs
• Event Based Loading
sub-tab inadvertently set to
trigger on event
• Card software error
9931-EMDE PRODUCT MANUAL
Corrective Action
Each analog channel corresponding to rear
module analog audio ports has input/output port
direction selectors that set the AES as input or
output.
Make certain port is set as input or output, as
intended, in accordance with Setting I/O
Switches for Analog Audio (1-8) Ports (p. 2-1).
Conventions using RS-485 are not always
consistent across devices. If the A and B
differential feeds are reversed, the encoder will
not recognize the signal.
This card uses the following convention per
EIA-485:
A is inverting (–) pin
B is non-inverting (+) pin
G is ground/common
Reversing the A and B connections in this error
case typically solves this problem.
• If GPI is not to be used, make certain GPI
Coding control on GPI Controls tab is set to
Disabled. (If control is left on Binary with no
inputs, the pull-up HI logic state on the open
inputs will be interpreted as two "HI's" on the
inputs, resulting in an invoked preset).
• If event based loading is not to be used,
make certain Event Based Presets is
disabled (either using master Enable/
Disable control or through events settings.
See Event Based Preset Loading (p. 3-54)
for more information.
• In the extremely unlikely case this error
occurs, the card will display
1. Go to the Log tab and follow the on-screen
instructions to download the generated log
file to connected computer. After the file
downloads, the card reboots and the error
indication will be cleared.
2. Send the log file to Cobalt product support.
Cobalt Engineering will analyze the log and
typically respond with corrective action.
Troubleshooting
9931-EMDE-OM (V1.17)