User's Manual

Optimization (Pre–ATP) Data Sheets – continued
SC 4812T CDMA BTS Optimization/ATP
May 2000
A-12
3–Carrier Adjacent Channels
4–Carrier Adjacent Channels
Table A-12: TX Bay Level Offset Calibration (3–Sector: 3 or 4–Carrier Adjacent Channels)
OK Parameter Specification Comments

BBX2–1, ANT–1 = dB
BBX2–r, ANT–1 = dB

Calibrate
carrier 1
TX Bay Level Offset = 42 dB (+4 dB)
prior to calibration
BBX2–2, ANT–2 = dB
BBX2–r, ANT–2 = dB

BBX2–3, ANT–3 = dB
BBX2–r, ANT–3 = dB

BBX2–7, ANT–1 = dB
BBX2–r, ANT–1 = dB

Calibrate
carrier 2
TX Bay Level Offset = 42 dB (+4 dB)
prior to calibration
BBX2–8, ANT–2 = dB
BBX2–r, ANT–2 = dB

BBX2–9, ANT–3 = dB
BBX2–r, ANT–3 = dB

BBX2–4, ANT–4 = dB
BBX2–r, ANT–4 = dB

Calibrate
carrier 3
TX Bay Level Offset = 42 dB (+4 dB)
prior to calibration
BBX2–5, ANT–5 = dB
BBX2–r, ANT–5 = dB

BBX2–6, ANT–6 = dB
BBX2–r, ANT–6 = dB

BBX2–10, ANT–4 = dB
BBX2–3, ANT–4 = dB

Calibrate
carrier 4
TX Bay Level Offset = 42 dB (+4 dB)
prior to calibration
BBX2–11, ANT–5 = dB
BBX2–r, ANT–5 = dB

BBX2–12, ANT–6 = dB
BBX2–r, ANT–6 = dB

BBX2–1, ANT–1 = dB
BBX2–r, ANT–1 = dB

Calibration
Audit
carrier 1
0 dB (+0.5 dB) for gain set resolution
post calibration
BBX2–2, ANT–2 = dB
BBX2–r, ANT–2 = dB

carrier
1
BBX2–3, ANT–3 = dB
BBX2–r, ANT–3 = dB
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