Sc 4812T-Mc Bts Read-Me-First (Optimization/Atp); Specific Test Procedural Changes; Customer Atp - Motorola SC 4812T-MC Technical Information

SC 4812T-MC BTS READ-ME-FIRST (Optimization/ATP)

SC 4812T-MC BTS READ-ME-FIRST (Optimization/ATP)
General Test Procedural Changes in SC 4812T-MC

Specific Test Procedural Changes

Customer ATP

RMF-4
NOTE The GENERAL information herein summarizes procedural
changes introduced with the SC 4812T–MC BTS. Detailed
procedures are provided in the Optimization and ATP sections.
Before executing any test or calibration procedures, ALL PAs must be
in–service (INS).
For all TX ATP tests, carriers-not-under-test must also be keyed.
For TX Bay Level Offset, carriers-not-under-test need to be keyed at
VERY LOW power level. Also:
The TX BLO is approximately 40dB +5 dB for 3-sector BTS and
S
43dB +5 dB for 6-sector BTS.
Single-sided BLO spec is >35dB. Double-sided BLO spec is 40dB +5
S
dB.
For Rho and Code Domain Power tests, carriers-not-under-test need to
be keyed to a LOW level to avoid overloading the test equipment.
Spectral Mask Testing:
Channels of carriers not under test must be offset (as outlined in the
following example) to eliminate interference from adjacent channels (or
inaccurate 'fail' result) while spectral mask is executed on carrier under
test. For carriers not under test, recommended channel offsets are 200
AMP Channels from the channel of the carrier under test (if equipped),
42 AMP channels for next carrier (if equipped) and 42 AMP channels for
next carrier (if equipped).
Example: Customer has 4 carrier/3 sector configuration and channel for
first carrier is 283
F= Channel of carrier under test=283
F1=Channel of nearest carrier = F+200 AMP Channels
F2=Channel of next carrier = F1+42 AMP Channels
F3=Channel of next carrier = F2+42 AMP Channels
After new channels are determined, implement these new channels when
BBXs of carriers not under test are keyed. Perform Spectral Mask
testing and dekey when carrier under test has been tested. Repeat offset
exercise and test remaining carriers.
Pilot Power Setting Accuracy Verification With a Wide
Band RF Power Meter
The SC4812T–MC requires all equipped PAs be enabled during TX test.
If the "tuned" RF power meter, such as Agilent VSA E4406A, is
available then one can enable all sectors carriers simultaneously and
measure each sector–carrier power level setting. The following
work–around procedure is suggested when used with a wide band RF
power meter and the BTS is under control of CBSC/OMC–R.
1X SC 4812T-MC Multicarrier BTS Optimization/ATP
68P64115A21–B
Sept 2003