Nokia Solutions and Networks T5DJ1 Benutzerhandbuch
RX FER Acceptance Test
68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
4-27
RX FER Acceptance Test
Background
Overview – This test verifies the BTS Frame Erasure Rate (FER) on all
TCHs currently configured on operator–selected MCCs (full rate at 1%
FER) at –119 dBm. All tests are performed using the external, calibrated
test equipment as the signal source controlled by the same command.
Measurements are made at the specified BTS RX antenna connection.
TCHs currently configured on operator–selected MCCs (full rate at 1%
FER) at –119 dBm. All tests are performed using the external, calibrated
test equipment as the signal source controlled by the same command.
Measurements are made at the specified BTS RX antenna connection.
Equipment Operation During Testing – The pilot gain on each MCC
will be set to 262 for each TX antenna, and the forward link for all TCH
elements from the MCCs will be enabled. Appropriate BBX(s) must be
keyed in order to enable the RX receive circuitry. Operator–selected
BBXs will be keyed using only
will be set to 262 for each TX antenna, and the forward link for all TCH
elements from the MCCs will be enabled. Appropriate BBX(s) must be
keyed in order to enable the RX receive circuitry. Operator–selected
BBXs will be keyed using only
bbxlvl
, to generate a CDMA carrier
with pilot channel element only. Transmit power output is set at –40
dBm. Test equipment output power is set so that the received power at
the BBX is –119 dBm. The final output power setting of the test
equipment takes into account the MPC type, BTS RF path losses, and
test cable losses. If selected, the redundant BBX will be assigned to the
current RX antenna paths under test.
dBm. Test equipment output power is set so that the received power at
the BBX is –119 dBm. The final output power setting of the test
equipment takes into account the MPC type, BTS RF path losses, and
test cable losses. If selected, the redundant BBX will be assigned to the
current RX antenna paths under test.
Test Measurements – The LMF will prompt the MCC channel element
under test to measure all–zero longcode and provide the FER report on
the selected active MCC on the reverse link for the main and, if selected,
diversity RX antenna paths. Results are evaluated to ensure they meet
the following specification:
under test to measure all–zero longcode and provide the FER report on
the selected active MCC on the reverse link for the main and, if selected,
diversity RX antenna paths. Results are evaluated to ensure they meet
the following specification:
FER returned less than 1% and Total Frames measured is 1500
Redundant BBX Testing – After the test, the BBX and the test
equipment will be de–keyed to shut down the pilot signal and the active
channel element, respectively. If the redundant BBX was tested, BBXR
assignment to an active sector will also be reset.
equipment will be de–keyed to shut down the pilot signal and the active
channel element, respectively. If the redundant BBX was tested, BBXR
assignment to an active sector will also be reset.
Antenna Connections for Companion Frame RX Diversity Tests – At
a site equipped with companion frames, RX diversity for each
SC4812ET Lite frame is provided by the receive antennas for the
collocated companion frame. Because of this, performing FER on
companion frame diversity RX requires different RX test cable
connections than on a starter frame. When performing companion frame
diversity RX FER, use Figure 4-1 and Table 4-1 or Table 4-2 to
determine the correct location for the RX test cable connections.
a site equipped with companion frames, RX diversity for each
SC4812ET Lite frame is provided by the receive antennas for the
collocated companion frame. Because of this, performing FER on
companion frame diversity RX requires different RX test cable
connections than on a starter frame. When performing companion frame
diversity RX FER, use Figure 4-1 and Table 4-1 or Table 4-2 to
determine the correct location for the RX test cable connections.
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