Software Crestron SIMPL™ Windows
short circuit between the Z line and either power or ground in the network wiring. To
verify if this problem is due to a faulty network driver, disconnect all network wires
from your control system and repeat the test. If you receive this message again, you
have a problem with your control system. If not, there is a probable short circuit in
your network wiring.
"Y and Z lines are not symmetrical on transmit"
Description
The Y and Z logical levels must not be the same for more than 0.25ms during
transmit.
Possible Cause
This problem can be caused by a faulty network driver in the control system, a short
circuit between the Y line and either power or ground in the network wiring, or by a
short circuit between the Z line and either power or ground in the network wiring. To
verify if this problem is due to a faulty network driver, disconnect all network wires
from your control system and repeat the test. If you receive this message again, you
have a problem with your control system. If not, there is a probable short circuit in
your network wiring.
"Delta Y and Delta Z are not within 25% on
transmit"
Description
The difference between the maximum voltage on the Y line and the minimum
voltage on the Y line (delta y) must be within 25% of the difference between the
maximum voltage on the Z line and the minimum voltage on the Z line (delta z)
during transmit. That is, delta y must not be 25% greater than delta z and delta z
must not be 25% greater than delta y.
Possible Cause
This problem can be caused by a faulty network driver in the control system, or by a
problem in the network wiring. To verify if this problem is due to a faulty network
driver, disconnect all network wires from your control system and repeat the test. If
you receive this message again, you have a problem with your control system. If not,
there is a problem in your network wiring.
"Y voltage is too high on transmit"
Description
The highest voltage on the Y line must not exceed 6.88 volts during transmit.
Possible Cause
This problem can be caused by a faulty network driver in the control system, by a
short circuit between the Y line and power in the network wiring, or by a break in the
ground line. To verify if this problem is due to a faulty network driver, disconnect all
network wires from your control system and repeat the test. If you receive this
message again, you have a problem with your control system. If not, there is a
problem in your network wiring. A break in the ground line would also result in the
analysis: "Z voltage is too high on transmit".
134 • Crestron SIMPL Windows Installation & Operations Guide – DOC. 5728C
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