Manual

ANSI C63.17-2006
Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices
8.3.2 Validation of dual access criteria check for EUTs that implement the upper threshold
The test procedure is as follows:
a) Adjust the path loss between the EUT and its companion device such that the received signal to
the EUT from the companion device is at least 40 dB above T
L
+ U
M
.
b) By using either frequency administration commands or out-of-operating-region interference
applied to the EUT, restrict the EUT and its companion device to operation at a single carrier f
1
for TDMA systems and on f
1
and f
2
and corresponding duplex carriers for FDMA systems. If
out-of-operating-region interference is used to confine the EUT to the enabled carrier(s), use the
procedures of 7.2.3 to ensure that the out-of-operating-region interference does not corrupt the
test results. Verify that the EUT and its companion device can establish a connection on a
time/spectrum window on the enabled carrier(s). Terminate the connection.
c) Apply interference to the EUT on the EUT’s transmit time/spectrum windows at T
L
+ U
M
per
carrier on all time/spectrum windows except for one, which has interference at least 10 dB
below T
L
. Adjust the interference to the EUT on its receive time/spectrum windows such that a
single time/spectrum window has interference at least 10 dB below T
L
, and the interference on
the other time/spectrum windows is at T
L
+ U
M
+ 7 dB. The interference to the companion
device should be at least 10 dB below T
L
on all active time/spectrum windows. The
interference-free receive time/spectrum window must not be the duplex mate of the
interference-free transmit time/spectrum window.
30
d) Cause the EUT to attempt to establish a connection. The connection should be made on the
interference-free receive time/spectrum window and its duplex mate. Otherwise, the EUT fails
the test.
e) If a connection exists, terminate it. Reduce the interference on the EUT’s receive time/spectrum
windows to a level of T
L
+ U
M
per carrier on all time/spectrum windows except for one, which
has interference at least 10 dB below T
L
. Raise the interference on the EUT’s transmit
time/spectrum windows to a level of T
L
+ U
M
+ 7 dB, maintaining one time/spectrum window
with interference at least 10 dB below T
L
. The interference to the companion device should be at
least 10 dB below T
L
on all active time/spectrum windows. Again, the interference-free transmit
and receive time/spectrum windows should not constitute a duplex pair if the system designates
a specific duplex pairing for time/spectrum windows.
f) Cause the EUT to attempt to establish a connection. The connection should be made on the
interference-free transmit time/spectrum window and its duplex mate. Otherwise, the system
fails the test.
g) Terminate the connection and raise the interference to the EUT on all of the EUT’s transmit and
receive time/spectrum windows to T
U
+ U
M
per carrier on all time/spectrum windows except for
a single transmit time/spectrum window and a single receive time/spectrum window, which
shall have interference at least 10 dB below T
L
. The low-interference transmit and receive
time/spectrum windows shall not constitute a duplex pair. Adjust the path loss between the EUT
and its companion device such that the received signal to the EUT from the companion device is
at least 30 dB above T
U
. Cause the EUT to attempt to establish a connection. If the EUT
transmits (attempts to establish a connection), or a connection is established, the test fails.
30
This assumes that the system designates a fixed duplex pairing for transmit and receive time/spectrum windows. If this is not the
case, the interference-free time/spectrum windows must be selected by the EUT for both the transmit and receive directions.
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