Sphynx User Manual
© 2000 Merging Technologies
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Appendix 4 – Troubleshooting / FAQ
All Monitor OUT LEDs are constantly blinking:
This problem may happen when the signal present at the
ODI
-
A
input is not synchronous with the Sphynx clock, or
has too much jitter. The most common occurrence for this situation to happen is whenever the Sphynx and the
equipment to which it is connected are both set to slave to each other. This is a pretty common user setup problem.
Care should be taken in any digital audio studio to always set one (and only one) unit as the master while
programming all other units to slave to this “master” clock.
Monitor OUT5/6 and OUT7/8 LEDs only are constantly blinking in ‘x2’ SR Mode:
In ‘x2’ SR mode, this problem may happen when the two signals present at both
ODI
inputs are not coming from the
same device, or the two optical fibers connected to
ODI
-
A
and
ODI
-
B
have a length different by more than ~1 meter.
When using the Sphynx as a stand-alone unit, how do you route audio through the unit?
Can you do it without patching the ADAT INs and OUTs together?
When using the Sphynx as a stand-alone unit, the parameter 6 in the ‘Settings Menu’ should be set to enable the
STAND ALONE mode.
This way all input modules signals are routed internally one-to-one to the output modules. There is no need for an
ADAT external loop.
Three examples will best describe some of the various possible setups:
1) Sphynx is used as a stand alone 8 channels A/D converter.
In that mode, Sphynx would be fitted with 4 stereo analog line input modules and 4 stereo AES-EBU output
modules.
- Analog line signals on inputs 1 and 2 are converted to a digital AES-EBU signal on output 1/2,
- Analog line signals on inputs 3 and 4 are converted to a digital AES-EBU signal on output 3/4,
- and so on…
2) Sphynx is used as a stand alone 8 channels D/A converter.
In that mode, Sphynx would be fitted with 4 stereo AES-EBU input modules and 4 stereo analog line output
modules.
- Digital AES-EBU signal on input 1/2 is converted to two analog line signals on outputs 1 and 2,
- Digital AES-EBU signal on input 3/4 is converted to two analog line signals on outputs 3 and 4,
- and so on...
3) Sphynx is used as a stand-alone mixed setup featuring 4 channels A/D converter and 4 channels D/A converter.
In that mode, Sphynx would be fitted with 2 stereo analog line input modules (say in input slots IN1/2 and IN3/4)
and 2 stereo AES-EBU output modules (in that case in output slots OUT1/2 and OUT3/4).
Further to this A/D section, the Sphynx would further be fitted with 2 stereo AES-EBU input modules (then in
input slots IN5/6 and IN7/8) and 2 stereo analog line output modules (in output slots OUT5/6 and OUT7/8).
In this example, audio signals would be routed in the following way:
- Analog line signals on inputs 1 and 2 are converted to a digital AES-EBU signal on output 1/2,
- Analog line signals on inputs 3 and 4 are converted to a digital AES-EBU signal on output 3/4,
- Digital AES-EBU signal on input 5/6 is converted to two analog line signals on outputs 5 and 6,
- Digital AES-EBU signal on input 7/8 is converted to two analog line signals on outputs 7 and 8,
Due to the highly modular nature of the Sphynx unit, any other combination of input and output modules can be
selected, based on specific user's needs.
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