Delta Y On Receive Is Too Small; Delta Z On Receive Is Too Small; Y And Z Lines Are Not Symmetrical On Receive; Delta Y And Delta Z Are Not Within 25% On Receive - Crestron SW-SIMPL Installation & Operating Manual

Software
136 • Crestron SIMPL Windows

"Delta Y on receive is too small"

Description
The difference between the maximum voltage on the Y line and the minimum
voltage on the Y line must be > 0.94 volts during receive.
Possible Cause
This problem can be caused by a faulty network driver in the selected network
device, by the physical length of the Y line being too long, by the gauge of the
network wire being too high, by a break in the power line, by a break in the Y line,
or by the Y and Z lines being swapped. To verify if this problem is due to a faulty
network driver, disconnect all network wires from the control system and attach the
selected device directly to the control system using a short length of network wire
and repeat the test. If you receive this message again, you have a problem with your
network device. If not, you have a wiring problem. A break in the power line or the
Y and Z lines being swapped would also result in the analysis: "Delta Z on receive is
too small".

"Delta Z on receive is too small"

Description
The difference between the maximum voltage on the Z line and the minimum
voltage on the Z line must be > 0.94 volts during receive.
Possible Cause
This problem can be caused by a faulty network driver in the selected network
device, by the physical length of the Z line being too long, by the gauge of the
network wire being too high, by a break in the power line, by a break in your Z line,
or by the Y and Z lines being swapped. To verify if this problem is due to a faulty
network driver, disconnect all network wires from the control system and attach the
selected device directly to the control system using a short length of network wire
and repeat the test. If you receive this message again, you have a problem with your
network device. If not, you have a wiring problem. A break in the power line or the
Y and Z lines being swapped would also result in the analysis: "Delta Y on receive is
too small".

"Y and Z lines are not symmetrical on receive"

Description
The Y and Z logical levels must not be the same for more than 0.25ms during
receive. (Symmetry)
Possible Cause
This problem can be caused by a faulty network driver in the selected network
device, 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 attach the selected device
directly to the control system using a short length of network wire and repeat the test.
If you receive this message again, you have a problem with your network device. If
not, there is a probable short circuit in your network wiring.

"Delta Y and Delta Z are not within 25% on receive"

Description
The difference between the maximum voltage on the Y line and the minimum
Crestron SIMPL™ Windows
Installation & Operations Guide – DOC. 5728C