Rane ECS v2 RaneWare (RaneWare 2.1) - Manual (Page 23)

RW Manual-23
TROUBLESHOOTING
POWER LED is Off:
Check POWER connection on rear panel, and that the
remote supply is connected to a live AC source.
No communication between the unit and computer:
Set the DEVICE ADDRESS to a unique small number,
and try polling for units in RaneWare (under Device > Poll).
The unit should be found quickly.
Check that the COM port selected in RaneWare (under
Setup > System Setup) is the one on your computer that is
connected to the unit. Also check that the cable is a standard
RS-232 cable (not a null modem type). If an adaptor is used,
it must not be null modem. The cable must be connected to the
RW 232 INPUT jack on the rear of the unit. See the ECS
Hardware Manual.
Audio hum or noise:
Try Muting the unit. If this helps significantly, the
problem may be with the Input connection, or the equipment
driving the Input. If Muting has little effect, the problem is
likely either the Output connection, or equipment driven by
the Output.
ECS is intended to connect to equipment with balanced
audio I/O and chassis-grounded shield/common. This kind of
audio interconnection should maximize audio quality.
Connecting equipment with signal grounded shields or
unbalanced connections may result in hum or noise due to
induced currents in the signal path. It may be possible to
reduce or eliminate these problems, although some experi-
mentation may be required:
Try disconnecting the audio cable shields at one end,
particularly between chassis grounded and signal grounded
equipment.
Try combinations of lifting grounds on units supplied with
ground lift switches (or links).
Verify that all chassis are tied to a good earth ground.
Some units with outboard power supplies do not ground
the chassis through the line cord. Make sure these units are
grounded by tying the Chassis Ground Point to a known earth
ground. A star washer guarantees proper contact.
For more information on balanced interconnection and
grounding, please refer to RaneNote 110, “Sound System
Interconnection” or Journal of the AES Vol. 43 No. 6 (June
1995).